/* ============================================
   Margot-Inspired Design System
   CSS Variables & Base Styles
   ============================================ */

/* Google Fonts Import with font-display: swap for performance */
@import url("https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;500;600;700&family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap");

/* ============================================
   CSS Variables - Design System
   ============================================ */

:root {
  /* ==================== Colors ==================== */
  --color-primary: #0b0b0b;
  --color-secondary: #ffffff;
  --color-accent: #2443f2;
  --color-accent-light: rgba(36, 67, 242, 0.18);
  --color-text: #0b0b0b;
  --color-text-light: rgba(0, 0, 0, 0.6);
  --color-border: rgba(0, 0, 0, 0.12);
  --color-white: #ffffff;

  /* ==================== Typography ==================== */
  --font-heading: "Playfair Display", serif; /* Mantendo o serif elegante para títulos */
  --font-body: "JetBrains Mono", monospace; /* Nova fonte técnica e precisa */
  --font-mono: "JetBrains Mono", monospace;

  /* Font Sizes - Typographic Scale (1.25 ratio) with Fluid Typography */
  --text-xs: clamp(0.64rem, 0.6rem + 0.2vw, 0.75rem); /* 10.24px - 12px */
  --text-sm: clamp(0.8rem, 0.75rem + 0.25vw, 0.875rem); /* 12.8px - 14px */
  --text-base: clamp(0.875rem, 0.85rem + 0.3vw, 1rem); /* 14px - 16px */
  --text-lg: clamp(1rem, 0.95rem + 0.4vw, 1.25rem); /* 16px - 20px */
  --text-xl: clamp(1.25rem, 1.15rem + 0.5vw, 1.563rem); /* 20px - 25px */
  --text-2xl: clamp(1.5rem, 1.4rem + 0.6vw, 1.953rem); /* 24px - 31.25px */
  --text-3xl: clamp(1.875rem, 1.75rem + 0.75vw, 2.441rem); /* 30px - 39.06px */
  --text-4xl: clamp(2.25rem, 2.1rem + 0.9vw, 3.052rem); /* 36px - 48.83px */
  --text-5xl: clamp(2.5rem, 2.3rem + 1.2vw, 3.815rem); /* 40px - 61.04px */

  /* ==================== Spacing System - Base 8px ==================== */
  --space-1: 0.5rem; /* 8px */
  --space-2: 1rem; /* 16px */
  --space-3: 1.5rem; /* 24px */
  --space-4: 2rem; /* 32px */
  --space-5: 2.5rem; /* 40px */
  --space-6: 3rem; /* 48px */
  --space-8: 4rem; /* 64px */
  --space-10: 5rem; /* 80px */
  --space-12: 6rem; /* 96px */
  --space-16: 8rem; /* 128px */

  /* ==================== Layout ==================== */
  --container-max: 1280px;
  --content-max: 720px; /* For text readability */
  --header-height: 80px;

  /* ==================== Borders & Radius ==================== */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* ==================== Shadows - Subtle and elegant ==================== */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.08);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);

  /* ==================== Transitions ==================== */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);

  /* ==================== Z-index Scale ==================== */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal: 400;
  --z-popover: 500;
  --z-tooltip: 600;
}

/* ============================================
   Reduced Motion Support
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============================================
   CSS Reset & Base Styles
   ============================================ */

/* Box sizing reset */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* Base HTML & Body */
html {
  font-size: 16px;
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7; /* Aumentado ligeiramente para fontes mono */
  color: var(--color-text);
  background-color: var(--color-secondary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  letter-spacing: -0.01em; /* Ajuste fino para a JetBrains Mono em parágrafos */
  overflow-x: hidden;
}

/* Typography Base Styles */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.1; /* Títulos um pouco mais compactos para o serif */
  color: var(--color-primary);
  margin-bottom: var(--space-3);
  letter-spacing: -0.02em; /* Títulos mais elegantes */
}

h1 {
  font-size: var(--text-5xl);
}

h2 {
  font-size: var(--text-4xl);
}

h3 {
  font-size: var(--text-3xl);
}

h4 {
  font-size: var(--text-2xl);
}

h5 {
  font-size: var(--text-xl);
}

h6 {
  font-size: var(--text-lg);
}

p {
  margin-bottom: var(--space-3);
  line-height: 1.7;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-primary);
}

a:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Lists */
ul, ol {
  margin-bottom: var(--space-3);
  padding-left: var(--space-4);
}

li {
  line-height: 1.6;
  margin-bottom: var(--space-1);
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Buttons */
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* Form elements */
input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
}

/* ============================================
   Utility Classes
   ============================================ */

/* Skip to Content Link for Accessibility */
.skip-to-content {
  position: absolute;
  top: -100px;
  left: 0;
  background-color: var(--color-accent);
  color: var(--color-white);
  padding: var(--space-2) var(--space-4);
  text-decoration: none;
  font-weight: 600;
  font-size: var(--text-base);
  z-index: var(--z-tooltip);
  border-radius: 0 0 var(--radius-md) 0;
  transition: top var(--transition-base);
}

.skip-to-content:focus {
  top: 0;
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

/* Responsive container padding */
@media screen and (max-width: 767px) {
  .container {
    padding-left: var(--space-3);
    padding-right: var(--space-3);
  }
}

@media screen and (max-width: 479px) {
  .container {
    padding-left: var(--space-2);
    padding-right: var(--space-2);
  }
}

/* Content width constraint for readability */
.content-width {
  max-width: var(--content-max);
  margin-left: auto;
  margin-right: auto;
}

/* Section spacing */
.section {
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
  border-top: 1px solid var(--color-border);
}

/* Alternating Section Colors */
.section:nth-of-type(even) {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-top: none;
}

.section:nth-of-type(even) .section__title,
.section:nth-of-type(even) .section__lead,
.section:nth-of-type(even) .contact__subtitle,
.section:nth-of-type(even) h2,
.section:nth-of-type(even) h3,
.section:nth-of-type(even) p,
.section:nth-of-type(even) li {
  color: var(--color-white);
}

.section:nth-of-type(even) .contact__label {
  color: rgba(255, 255, 255, 0.7);
}

.section:nth-of-type(even) .contact__value {
  color: var(--color-primary); /* Will be inside white card */
}

/* Cards inside dark sections (Transparent Background with White Border) */
.section:nth-of-type(even) .app__card,
.section:nth-of-type(even) .repo__card,
.section:nth-of-type(even) .skill__card,
.section:nth-of-type(even) .feature-card,
.section:nth-of-type(even) .contact__item,
.section:nth-of-type(even) .about__stat-card {
  background-color: transparent;
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Ensure text colors inside transparent cards in dark sections are white */
.section:nth-of-type(even) .app__card .app__name,
.section:nth-of-type(even) .repo__card .repo__name,
.section:nth-of-type(even) .skill__card .skill__name,
.section:nth-of-type(even) .feature-card h3,
.section:nth-of-type(even) .about__stat-card .about__stat-number,
.section:nth-of-type(even) .contact__value {
  color: var(--color-white);
}

.section:nth-of-type(even) .app__card .app__description,
.section:nth-of-type(even) .repo__card .repo__description,
.section:nth-of-type(even) .feature-card p,
.section:nth-of-type(even) .about__stat-card .about__stat-label,
.section:nth-of-type(even) .contact__label {
  color: rgba(255, 255, 255, 0.7);
}

/* Hover effects for cards in dark sections */
.section:nth-of-type(even) .app__card:hover,
.section:nth-of-type(even) .repo__card:hover,
.section:nth-of-type(even) .skill__card:hover,
.section:nth-of-type(even) .feature-card:hover,
.section:nth-of-type(even) .contact__item:hover,
.section:nth-of-type(even) .about__stat-card:hover {
  border-color: var(--color-white);
  background-color: rgba(255, 255, 255, 0.05);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

/* Ensure Contact Section overrides its default light blue */
.section.contact:nth-of-type(even) {
  background-color: var(--color-white);
}

/* Responsive section spacing */
@media screen and (max-width: 1024px) {
  .section {
    padding-top: var(--space-10);
    padding-bottom: var(--space-10);
  }
}

@media screen and (max-width: 767px) {
  .section {
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
  }
}

@media screen and (max-width: 479px) {
  .section {
    padding-top: var(--space-6);
    padding-bottom: var(--space-6);
  }
}

/* Visually hidden (for accessibility) */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ============================================
   Navigation Component
   ============================================ */

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  transition:
    background-color var(--transition-base),
    backdrop-filter var(--transition-base),
    box-shadow var(--transition-base);
  z-index: var(--z-fixed);
  height: var(--header-height);
  border-bottom: 1px solid var(--color-border);
}

/* Scrolled state */
.header.scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
}

/* Navigation */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: var(--header-height);
}

/* Logo */
.nav__logo {
  display: flex;
  align-items: center;
}

.brand-logo {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-primary);
  transition: color var(--transition-base);
}

.brand-logo:hover {
  color: var(--color-accent);
}

.logo-text {
  display: inline-block;
}

.logo-img {
  height: 40px;
  width: auto;
}

/* Navigation Menu */
.nav__menu {
  display: flex;
  align-items: center;
}

.nav__list {
  display: flex;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__item {
  margin: 0;
}

.nav__link {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text);
  text-decoration: none;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  transition:
    color var(--transition-base),
    background-color var(--transition-base);
  position: relative;
}

.nav__link:hover {
  color: var(--color-accent);
  background-color: transparent;
}

.nav__link:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Active link highlighting */
.nav__link.active {
  color: var(--color-accent);
  font-weight: 600;
}

.nav__link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background-color: var(--color-accent);
}

/* Navigation Actions */
.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Hamburger Menu Toggle */
.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 28px;
  height: auto;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: var(--z-fixed);
  min-width: 44px;
  min-height: 44px;
  align-items: center;
}

.nav__toggle span {
  display: block;
  width: 28px;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
  transition:
    transform var(--transition-base),
    opacity var(--transition-base),
    background-color var(--transition-base);
}

.nav__toggle:hover span {
  background-color: var(--color-accent);
}

.nav__toggle:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
}

/* Hamburger animation when active */
.nav__toggle.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav__toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav__toggle.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  text-align: center;
  text-decoration: none;
  border-radius: 16px;
  cursor: pointer;
  transition: all var(--transition-base);
  border: 1px solid transparent;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Primary Button (Black Solid -> White Outline) - Light Sections */
.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background-color: #2443F2 !important;
  color: #FFFFFF !important;
  border-color: #2443F2 !important;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Secondary Button (Outline -> Black Solid) - Light Sections */
.btn--secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--secondary:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ============================================
   Buttons in Dark Sections (Inverted Logic)
   ============================================ */

/* Primary Button (White Solid -> Black Outline) - Dark Sections */
.section:nth-of-type(even) .btn--primary {
  background-color: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}

.section:nth-of-type(even) .btn--primary:hover {
  background-color: #0B0B0B !important;
  color: #FFFFFF !important;
  border-color: #0B0B0B !important;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Secondary Button (Outline White -> White Solid) - Dark Sections */
.section:nth-of-type(even) .btn--secondary {
  background-color: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

.section:nth-of-type(even) .btn--secondary:hover {
  background-color: var(--color-white);
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ============================================
   Custom Hero Project Button
   ============================================ */
.btn-hero-projects {
  position: relative;
  background-color: transparent;
  color: var(--color-primary);
  border: none !important;
  overflow: visible;
  z-index: 10;
  transition: color 0.4s cubic-bezier(0.25, 1, 0.5, 1);
  font-weight: 600;
  letter-spacing: 0.5px;
  isolation: isolate; /* Create new stacking context */
}

/* The expanding strip */
.btn-hero-projects::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 0;
  height: 100%;
  background-color: var(--color-primary);
  z-index: -1;
  transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  border-bottom: 2px solid transparent; /* Prepare for transition */
}

.btn-hero-projects:hover {
  color: var(--color-white) !important;
}

.btn-hero-projects:hover::before {
  width: 100vw;
  border-bottom: 2px solid var(--color-accent); /* Blue accent line */
}

/* Clean up previous after element */
.btn-hero-projects::after {
  display: none;
}

.btn--full {
  width: 100%;
}

/* Mobile button adjustments */
@media screen and (max-width: 767px) {
  .btn {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-base);
    min-width: 120px;
  }
}

/* ============================================
   Mobile Navigation (Responsive)
   ============================================ */

@media screen and (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .header {
    height: 64px;
  }

  .nav {
    height: 64px;
  }

  /* Show hamburger menu */
  .nav__toggle {
    display: flex;
  }

  /* Hide CTA button on mobile */
  .nav__actions .btn {
    display: none;
  }

  /* Mobile menu */
  .nav__menu {
    position: fixed;
    top: 64px;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: calc(100vh - 64px);
    background-color: var(--color-white);
    box-shadow: var(--shadow-xl);
    padding: var(--space-6) var(--space-4);
    transition: right var(--transition-slow);
    overflow-y: auto;
  }

  .nav__menu.show-menu {
    right: 0;
  }

  .nav__list {
    flex-direction: column;
    gap: var(--space-1);
  }

  .nav__link {
    display: block;
    padding: var(--space-3) var(--space-2);
    font-size: var(--text-base);
    transition:
      color var(--transition-base),
      background-color var(--transition-base);
  }

  .nav__link.active::after {
    display: none;
  }

  .nav__link.active {
    background-color: color-mix(in srgb, var(--color-accent) 10%, transparent);
  }
}

/* Tablet adjustments */
@media screen and (min-width: 769px) and (max-width: 1024px) {
  .nav__list {
    gap: var(--space-4);
  }
}

/* Smooth scroll behavior */
html {
  scroll-behavior: smooth;
}

/* Offset for fixed header when scrolling to anchors */
section[id] {
  scroll-margin-top: calc(var(--header-height) + var(--space-4));
}

/* Additional interactive element transitions */
.skill__card,
.repo__card,
.feature-card,
.contact__item {
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.social__link {
  transition:
    color var(--transition-base),
    background-color var(--transition-base),
    transform var(--transition-fast);
}

.footer__link {
  transition: color var(--transition-base);
}

.form__input,
.form__textarea {
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}

a {
  transition: color var(--transition-base);
}

/* Focus states for interactive elements */
button:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

input:focus,
textarea:focus,
select:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-color: var(--color-accent);
}

.footer__link:focus,
.social__link:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ============================================
   Hero Section Component
   ============================================ */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-secondary);
  padding-top: var(--header-height);
  position: relative;
  overflow: hidden;
  border-top: none;
  border-bottom: 1px solid var(--color-border);
}

/* Hero Content */
.hero__content {
  text-align: center;
  padding: var(--space-6) 0;
}

.hero__kicker {
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-light);
  margin-bottom: var(--space-3);
  opacity: 0;
  transform: translateY(24px);
  animation: fadeInUp 800ms cubic-bezier(0.4, 0, 0.2, 1) forwards;
  animation-delay: 50ms;
}

/* Hero Title (Name) */
.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2.8rem, 6vw, 5.5rem);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
  line-height: 1.1;
  opacity: 0;
  transform: translateY(30px);
  background-image: linear-gradient(
    90deg,
    var(--color-accent),
    var(--color-accent)
  );
  background-size: 0 100%;
  background-position: 0 100%;
  background-repeat: no-repeat;
  animation:
    fadeInUp 800ms cubic-bezier(0.4, 0, 0.2, 1) forwards,
    textReveal 900ms cubic-bezier(0.4, 0, 0.2, 1) forwards;
  animation-delay: 100ms, 220ms;
}

/* Hero Subtitle (Title) */
.hero__subtitle {
  font-family: var(--font-body);
  font-size: var(--text-xl);
  font-weight: 500;
  color: var(--color-text-light);
  margin-bottom: var(--space-4);
  line-height: 1.4;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 800ms cubic-bezier(0.4, 0, 0.2, 1) forwards;
  animation-delay: 200ms;
}

/* Hero Tagline */
.hero__tagline {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: var(--space-6);
  max-width: 600px;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 800ms cubic-bezier(0.4, 0, 0.2, 1) forwards;
  animation-delay: 300ms;
  margin-left: auto;
  margin-right: auto;
}

/* Hero Actions (CTA Buttons) */
.hero__actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 800ms cubic-bezier(0.4, 0, 0.2, 1) forwards;
  animation-delay: 400ms;
  justify-content: center;
}

/* Keyframe Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes textReveal {
  from {
    background-size: 0 100%;
  }
  to {
    background-size: 100% 100%;
  }
}

/* ============================================
   Scroll-Triggered Animation System
   ============================================ */

/* Initial state for elements that will animate on scroll */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Animated state when element enters viewport */
.animate-on-scroll.animate-in {
  opacity: 1;
  transform: translateY(0);
}

/* Fade-in animation for sections */
.section__title.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
}

.section__title.animate-in {
  opacity: 1;
  transform: translateY(0);
  transition-duration: 0.8s;
}

/* Slide-up effect for cards */
.skill__card.animate-on-scroll,
.repo__card.animate-on-scroll,
.feature-card.animate-on-scroll,
.about__stat-card.animate-on-scroll {
  opacity: 0;
  transform: translateY(40px);
}

.skill__card.animate-in,
.repo__card.animate-in,
.feature-card.animate-in,
.about__stat-card.animate-in {
  opacity: 1;
  transform: translateY(0);
  transition-duration: 0.6s;
}

/* Contact items slide in from left */
.contact__item.animate-on-scroll {
  opacity: 0;
  transform: translateX(-30px);
}

.contact__item.animate-in {
  opacity: 1;
  transform: translateX(0);
  transition-duration: 0.5s;
}

/* Form groups fade in */
.form__group.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
}

.form__group.animate-in {
  opacity: 1;
  transform: translateY(0);
  transition-duration: 0.4s;
}

/* About container slides in */
.about__container.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
}

.about__container.animate-in {
  opacity: 1;
  transform: translateY(0);
  transition-duration: 0.7s;
}

/* GitHub profile fades in */
.github__profile.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
}

.github__profile.animate-in {
  opacity: 1;
  transform: translateY(0);
  transition-duration: 0.6s;
}

/* ============================================
   Reduced Animations for Low-End Devices
   ============================================ */

/* Disable complex animations on low-end devices */
.reduce-animations *,
.reduce-animations *::before,
.reduce-animations *::after {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
}

.reduce-animations .animate-on-scroll {
  opacity: 1;
  transform: none;
}

/* ============================================
   Prefers Reduced Motion Support
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  /* Disable all animations and transitions */
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  /* Remove scroll animation classes */
  .animate-on-scroll {
    opacity: 1 !important;
    transform: none !important;
  }

  /* Disable hero animations */
  .hero__title,
  .hero__kicker,
  .hero__subtitle,
  .hero__tagline,
  .hero__actions {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }

  /* Disable card animations */
  .skill__card,
  .repo__card,
  .feature-card,
  .about__stat-card {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ============================================
   Smooth Scroll Behavior
   ============================================ */

html {
  scroll-behavior: smooth;
}

/* Disable smooth scroll for reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

/* ============================================
   Optional: Parallax Effect Classes
   ============================================ */

.parallax-element {
  will-change: transform;
  transition: transform 0.1s ease-out;
}

/* Disable parallax on reduced motion */
@media (prefers-reduced-motion: reduce) {
  .parallax-element {
    transform: none !important;
  }
}

/* ============================================
   Hero Section - Responsive Design
   ============================================ */

/* Tablet (768px - 1024px) */
@media screen and (min-width: 768px) and (max-width: 1024px) {
  .hero__title {
    font-size: var(--text-4xl);
  }

  .hero__subtitle {
    font-size: var(--text-xl);
  }

  .hero__tagline {
    font-size: var(--text-base);
  }
}

/* Mobile (< 768px) */
@media screen and (max-width: 767px) {
  .hero {
    min-height: 100vh;
    padding-top: 64px;
  }

  .hero__content {
    text-align: center;
  }

  .hero__title {
    font-size: var(--text-3xl);
  }

  .hero__subtitle {
    font-size: var(--text-lg);
  }

  .hero__tagline {
    font-size: var(--text-base);
    margin-left: auto;
    margin-right: auto;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__actions .btn {
    flex: 1;
    min-width: 140px;
  }
}

/* Small Mobile (< 480px) */
@media screen and (max-width: 479px) {
  .hero__title {
    font-size: var(--text-2xl);
  }

  .hero__subtitle {
    font-size: var(--text-base);
  }

  .hero__tagline {
    font-size: var(--text-sm);
  }

  .hero__actions {
    flex-direction: column;
    width: 100%;
  }

  .hero__actions .btn {
    width: 100%;
  }
}

/* ============================================
   About Section Component
   ============================================ */

.about {
  background-color: var(--color-white);
  padding: var(--space-16) 0;
}

.section__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 600;
  color: var(--color-primary);
  text-align: center;
  margin-bottom: var(--space-4);
  line-height: 1.2;
}

.section__lead {
  max-width: 720px;
  margin: 0 auto var(--space-8);
  font-size: var(--text-lg);
  color: var(--color-text-light);
  text-align: center;
}

/* About Container - Two Column Grid */
.about__container {
  display: grid;
  grid-template-columns: 60% 40%;
  gap: var(--space-8);
  align-items: center;
  margin-bottom: var(--space-8);
}

.about__container--centered {
  grid-template-columns: 1fr;
  justify-items: center;
  text-align: center;
}

.about__container--centered .about__image {
  display: none;
}

/* About Content */
.about__content {
  max-width: var(--content-max);
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.about__description {
  font-size: var(--text-lg);
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: var(--space-6);
}

/* About Image */
.about__image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.about-img {
  width: 100%;
  max-width: 300px;
  height: auto;
  border-radius: var(--radius-full);
  border: 3px solid var(--color-accent-light);
  object-fit: cover;
  aspect-ratio: 1 / 1;
}

/* GitHub Stats in About Section */
.about__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-6);
  text-align: center;
}

.about__stat-card {
  background-color: var(--color-secondary);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  text-align: center;
  border: 1px solid var(--color-border);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.about__stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.about__stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: var(--space-1);
}

.about__stat-label {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text-light);
  font-weight: 500;
}

/* About Features/Cards */
.about__features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.feature-card {
  background-color: var(--color-secondary);
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-align: center;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.feature-icon {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-3);
}

.feature-card h3 {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.feature-card p {
  font-size: var(--text-base);
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: 0;
}

/* ============================================
   About Section - Responsive Design
   ============================================ */

/* Tablet (768px - 1024px) */
@media screen and (min-width: 768px) and (max-width: 1024px) {
  .about {
    padding: var(--space-12) 0;
  }

  .about__container {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .about__image {
    order: -1;
  }

  .about-img {
    max-width: 250px;
  }

  .section__title {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-6);
  }
}

/* Mobile (< 768px) */
@media screen and (max-width: 767px) {
  .about {
    padding: var(--space-10) 0;
  }

  .about__container {
    grid-template-columns: 1fr;
    gap: var(--space-6);
    text-align: center;
  }

  .about__content {
    max-width: 100%;
  }

  .about__image {
    order: -1;
    margin-bottom: var(--space-4);
  }

  .about-img {
    max-width: 200px;
  }

  .about__description {
    font-size: var(--text-base);
  }

  .section__title {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-6);
  }

  .about__stats {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .about__features {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }
}

/* Small Mobile (< 480px) */
@media screen and (max-width: 479px) {
  .about {
    padding: var(--space-8) 0;
  }

  .section__title {
    font-size: var(--text-xl);
  }

  .about-img {
    max-width: 180px;
  }

  .about__stat-number {
    font-size: var(--text-2xl);
  }

  .feature-icon {
    font-size: var(--text-3xl);
  }

  .feature-card h3 {
    font-size: var(--text-lg);
  }

  .feature-card p {
    font-size: var(--text-sm);
  }
}

/* ============================================
   Skills Section Component
   ============================================ */

.skills {
  background-color: var(--color-white);
  padding: var(--space-12) 0;
}

.skills__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.skill__card {
  background-color: var(--color-white);
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-align: center;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
  cursor: default;
  /* Make cards keyboard focusable for accessibility */
  position: relative;
}

.skill__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.skill__icon {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-3);
  display: block;
}

.skill__name {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.skill__level {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text-light);
  line-height: 1.5;
}

/* ============================================
   Skills Section - Responsive Design
   ============================================ */

/* Tablet (768px - 1024px) */
@media screen and (min-width: 768px) and (max-width: 1024px) {
  .skills__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
  }
}

/* Mobile (< 768px) */
@media screen and (max-width: 767px) {
  .skills {
    padding: var(--space-10) 0;
  }

  .skills__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }

  .skill__icon {
    font-size: var(--text-3xl);
  }

  .skill__name {
    font-size: var(--text-lg);
  }

  .skill__level {
    font-size: var(--text-xs);
  }
}

/* Small Mobile (< 480px) */
@media screen and (max-width: 479px) {
  .skills__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }
}

/* ============================================
   Apps Section Component
   ============================================ */

.apps {
  background-color: var(--color-accent);
  padding: var(--space-12) 0;
  color: var(--color-white);
  border-top: none;
}

.apps .section__title,
.apps .section__lead {
  color: var(--color-white);
}

.apps__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.section.apps .app__card {
  background-color: var(--color-primary);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.app__card {
  background-color: var(--color-primary);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base),
    background-color var(--transition-base);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  text-align: center;
  align-items: center;
  box-shadow: var(--shadow-sm);
}

.app__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
  background-color: var(--color-accent);
}

/* Featured app styling */
.app__card--featured {
  border-color: var(--color-accent);
  background-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

/* In-progress app styling */
.app__card--in-progress {
  opacity: 0.85;
}

/* Clickable card styling */
.app__card--clickable {
  cursor: pointer;
}

.app__card--clickable:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.app__icon {
  font-size: var(--text-5xl);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.app__name {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-white);
  margin: 0;
  line-height: 1.3;
}

.app__description {
  font-size: var(--text-base);
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
  margin: 0;
  flex-grow: 1;
}

.apps .app__card .app__name {
  color: var(--color-white);
}

.apps .app__card .app__description {
  color: rgba(255, 255, 255, 0.7);
}

.app__card:hover .app__name,
.app__card:hover .app__description {
  color: var(--color-white);
}

.app__card:hover .app__status--launched,
.app__card:hover .app__status--in-progress,
.app__card:hover .app__status--beta {
  background-color: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.app__status {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  border-radius: 16px;
  font-size: var(--text-sm);
  font-weight: 500;
  margin-top: var(--space-2);
  align-self: center;
  border: 1px solid transparent;
  box-sizing: border-box;
}

.app__status--launched {
  background-color: rgba(255, 255, 255, 0.18);
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.25);
}

.app__status--in-progress {
  background-color: rgba(255, 255, 255, 0.18);
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.25);
}

.app__status--beta {
  background-color: rgba(255, 255, 255, 0.18);
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.25);
}

/* ============================================
   Apps Section - Responsive Design
   ============================================ */

/* Tablet (768px - 1024px) */
@media screen and (min-width: 768px) and (max-width: 1024px) {
  .apps__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-5);
  }
}

/* Mobile (< 768px) */
@media screen and (max-width: 767px) {
  .apps {
    padding: var(--space-10) 0;
  }

  .apps__grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .app__card {
    padding: var(--space-5);
  }

  .app__icon {
    font-size: var(--text-4xl);
  }

  .app__name {
    font-size: var(--text-lg);
  }

  .app__description {
    font-size: var(--text-sm);
  }
}

/* Small Mobile (< 480px) */
@media screen and (max-width: 479px) {
  .app__card {
    padding: var(--space-4);
  }
}

/* ============================================
   GitHub Section Component
   ============================================ */

.github {
  background-color: var(--color-white);
  padding: var(--space-12) 0;
}

.github__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.github__profile {
  flex: 1;
}

.github__profile-info {
  display: flex;
  gap: var(--space-4);
  align-items: center;
}

.github__avatar {
  flex-shrink: 0;
}

.github__avatar-img {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  border: 2px solid var(--color-accent-light);
  object-fit: cover;
}

.github__profile-details {
  flex: 1;
}

.github__username {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-1);
}

.github__bio {
  font-size: var(--text-base);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.github__stats-summary {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.github__stat {
  font-size: var(--text-sm);
  color: var(--color-text-light);
}

.github__stat strong {
  color: var(--color-accent);
  font-weight: 600;
}

/* GitHub Repositories Grid */
.repos__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.repo__card {
  background-color: var(--color-white);
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
  display: flex;
  flex-direction: column;
  height: 100%;
  box-shadow: var(--shadow-md);
  cursor: default;
  position: relative;
  text-align: center;
}

.repo__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

/* Make links within cards have pointer cursor */
.repo__card a {
  cursor: pointer;
}

.repo__card.featured {
  border-color: var(--color-accent);
  border-width: 2px;
}

.repo__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-3);
}

.repo__name {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-primary);
  margin: 0;
  flex: 1;
}

.repo__name a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

.repo__name a:hover {
  color: var(--color-accent);
}

.repo__demo {
  font-size: var(--text-lg);
  text-decoration: none;
  transition: transform var(--transition-fast);
}

.repo__demo:hover {
  transform: scale(1.2);
}

.repo__description {
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: var(--space-4);
  flex: 1;
}

.repo__footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}

.repo__stats {
  display: flex;
  gap: var(--space-3);
  align-items: center;
  font-size: var(--text-sm);
  color: var(--color-text-light);
}

.repo__language {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.language-dot {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
  display: inline-block;
}

.repo__stars {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.repo__topics {
  display: flex;
  gap: var(--space-1);
  flex-wrap: wrap;
  margin-top: var(--space-2);
}

.repo__topic {
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-2);
  background-color: var(--color-accent-light);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  font-weight: 500;
}

/* GitHub Loading State */
.github__loading {
  text-align: center;
  padding: var(--space-8);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
  margin: 0 auto var(--space-3);
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.github__loading p {
  font-size: var(--text-base);
  color: var(--color-text-light);
  margin: 0;
}

/* Skeleton Screens */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-border) 0%,
    var(--color-secondary) 50%,
    var(--color-border) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.skeleton-profile {
  display: flex;
  gap: var(--space-4);
  align-items: center;
  margin-bottom: var(--space-8);
}

.skeleton-avatar {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
}

.skeleton-profile-details {
  flex: 1;
}

.skeleton-text {
  height: 20px;
  margin-bottom: var(--space-2);
  border-radius: var(--radius-sm);
}

.skeleton-text.short {
  width: 40%;
}

.skeleton-text.medium {
  width: 60%;
}

.skeleton-text.long {
  width: 80%;
}

.skeleton-card {
  background-color: var(--color-white);
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.skeleton-card-header {
  margin-bottom: var(--space-3);
}

.skeleton-card-title {
  height: 24px;
  width: 70%;
  margin-bottom: var(--space-2);
}

.skeleton-card-description {
  height: 16px;
  margin-bottom: var(--space-1);
}

.skeleton-card-description:last-of-type {
  width: 60%;
  margin-bottom: var(--space-4);
}

.skeleton-card-footer {
  display: flex;
  gap: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}

.skeleton-badge {
  height: 20px;
  width: 80px;
  border-radius: var(--radius-sm);
}

/* GitHub Error State */
.github__error {
  text-align: center;
  padding: var(--space-8);
  background-color: var(--color-white);
  border-radius: 16px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.github__error-icon {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-3);
  display: block;
}

.github__error-title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.github__error p {
  font-size: var(--text-base);
  color: var(--color-text);
  margin-bottom: var(--space-4);
  line-height: 1.6;
}

.github__error .btn {
  margin-top: var(--space-2);
}

/* ============================================
   GitHub Section - Responsive Design
   ============================================ */

/* Tablet (768px - 1024px) */
@media screen and (min-width: 768px) and (max-width: 1024px) {
  .repos__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
  }

  .github__header {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Mobile (< 768px) */
@media screen and (max-width: 767px) {
  .github {
    padding: var(--space-10) 0;
  }

  .repos__grid {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .github__header {
    flex-direction: column;
    align-items: flex-start;
  }

  .github__profile-info {
    flex-direction: column;
    text-align: center;
  }

  .github__stats-summary {
    justify-content: center;
  }

  .github__avatar-img {
    width: 60px;
    height: 60px;
  }

  .github__username {
    font-size: var(--text-xl);
  }
}

/* ============================================
   Contact Section Component
   ============================================ */

.contact {
  background-color: var(--color-white);
  padding: var(--space-12) 0;
}

.contact .section__title,
.contact .section__lead,
.contact .contact__subtitle,
.contact .contact__text {
  color: var(--color-primary);
}

.contact .contact__label {
  color: var(--color-text-light);
}

.contact .contact__value {
  color: var(--color-primary);
}

.contact__container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: start;
  text-align: center;
}

.contact__info {
  text-align: center;
}

.contact__subtitle {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.contact__text {
  font-size: var(--text-base);
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}

.contact__details {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: center;
}

.contact__item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  background-color: color-mix(
    in srgb,
    var(--color-primary) 4%,
    var(--color-white)
  );
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
  text-align: center;
  justify-content: center;
}

.contact__item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.contact__icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact__label {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-light);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--space-1);
}

.contact__value {
  display: block;
  font-size: var(--text-base);
  color: var(--color-primary);
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition-base);
  text-align: center;
}

.contact__value:hover {
  color: var(--color-accent);
}

/* Contact Form */
.contact__form {
  background-color: transparent;
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.form__group {
  margin-bottom: 0.4rem;
  position: relative;
}

.form__label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-light);
  margin-bottom: 0.25rem;
  transition: color var(--transition-base);
}

.form__input,
.form__textarea {
  width: 100%;
  padding: 0.75rem;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: color-mix(
    in srgb,
    var(--color-primary) 3%,
    var(--color-white)
  );
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base);
  text-align: left;
}

.form__input:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px
    color-mix(in srgb, var(--color-accent) 10%, transparent);
}

.form__input:focus + .form__error,
.form__textarea:focus + .form__error {
  display: none;
}

.form__input.error,
.form__textarea.error {
  border-color: #e53e3e;
}

.form__input.success,
.form__textarea.success {
  border-color: #38a169;
}

.form__input::placeholder,
.form__textarea::placeholder {
  color: var(--color-text-light);
}

.form__textarea {
  resize: vertical;
  min-height: 120px;
}

.form__error {
  display: block;
  font-size: var(--text-xs);
  color: #e53e3e;
  margin-top: var(--space-1);
  min-height: 16px;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.form__error:not(:empty) {
  opacity: 1;
}

/* Submit Button States */
.btn__text,
.btn__loader {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.btn--loading .btn__text {
  display: none;
}

.btn--loading .btn__loader {
  display: inline-flex !important;
}

.btn--loading {
  pointer-events: none;
  opacity: 0.7;
}

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: var(--color-white);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

/* Success Message Modal */
.success-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  opacity: 0;
  animation: fadeIn 300ms cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes fadeIn {
  to {
    opacity: 1;
  }
}

.success-modal__content {
  background-color: var(--color-white);
  padding: var(--space-8);
  border-radius: 16px;
  box-shadow: var(--shadow-xl);
  text-align: center;
  max-width: 400px;
  width: 90%;
  transform: scale(0.9) translateY(20px);
  animation: modalSlideUp 400ms cubic-bezier(0.4, 0, 0.2, 1) forwards;
  animation-delay: 100ms;
}

@keyframes modalSlideUp {
  to {
    transform: scale(1) translateY(0);
  }
}

.success-modal__icon {
  width: 64px;
  height: 64px;
  background-color: #38a169;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
  animation: iconPop 500ms cubic-bezier(0.4, 0, 0.2, 1) forwards;
  animation-delay: 300ms;
  transform: scale(0);
}

@keyframes iconPop {
  0% {
    transform: scale(0);
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
  }
}

.success-modal__icon svg {
  width: 32px;
  height: 32px;
  stroke: var(--color-white);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}

.success-modal__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.success-modal__message {
  font-size: var(--text-base);
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: var(--space-6);
}

.success-modal__button {
  margin-top: var(--space-2);
}

/* Legacy success message (keeping for backwards compatibility) */
.success-message {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: var(--color-white);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  z-index: var(--z-modal);
  text-align: center;
  animation: fadeInUp 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

.success-icon {
  font-size: var(--text-4xl);
  display: block;
  margin-bottom: var(--space-3);
}

.success-content p {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.success-content small {
  font-size: var(--text-sm);
  color: var(--color-text-light);
}

/* ============================================
   Contact Section - Responsive Design
   ============================================ */

/* Tablet (768px - 1024px) */
@media screen and (min-width: 768px) and (max-width: 1024px) {
  .contact__container {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}

/* Mobile (< 768px) */
@media screen and (max-width: 767px) {
  .contact {
    padding: var(--space-10) 0;
  }

  .contact__container {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .contact__subtitle {
    font-size: var(--text-xl);
  }

  .contact__form {
    padding: var(--space-4);
  }
}

/* ============================================
   Animated Footer Component
   ============================================ */

main {
  position: relative;
  z-index: 1;
  background-color: var(--color-secondary);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  margin-bottom: 0px;
}

.footer-spacer {
  height: 40vh;
  width: 100%;
}

.footer-animated {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 40vh;
  background-color: #2443F2;
  color: #FFFFFF;
  z-index: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}

.footer-animated__content {
  width: 100%;
  max-width: var(--container-max);
  padding: var(--space-6) var(--space-4);
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
}

.footer-animated__brand {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  transform: scale(0.8) translateY(20px);
  opacity: 0.5;
  transition: transform 0.1s ease-out, opacity 0.1s ease-out;
  will-change: transform, opacity;
}

.footer-animated__logo {
  height: auto;
  width: 80px;
  margin-bottom: var(--space-3);
  object-fit: contain;
}

.footer-animated__title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  color: var(--color-white);
  margin: 0;
  letter-spacing: -0.02em;
}

.footer-animated__bottom {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: var(--space-4);
  margin-top: auto;
}

.footer-animated__copy {
  margin: 0;
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.8);
}

.footer-animated__links {
  display: flex;
  gap: var(--space-5);
  align-items: center;
}

.footer-animated__link {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color var(--transition-base);
  letter-spacing: 0.05em;
}

.footer-animated__link:hover {
  color: var(--color-white);
}

/* ============================================
   Footer - Responsive Design
   ============================================ */

/* Mobile (< 768px) */
@media screen and (max-width: 767px) {
  .footer-animated {
    height: 50vh;
  }
  .footer-spacer {
    height: 50vh;
  }

  .footer-animated__title {
    font-size: clamp(2rem, 8vw, 3rem);
  }

  .footer-animated__bottom {
    flex-direction: column-reverse;
    gap: var(--space-4);
    text-align: center;
  }
  .footer-animated__links {
    flex-direction: column;
    gap: var(--space-2);
  }
}

/* ============================================
   Floating Resume Button
   ============================================ */

.whatsapp-float {
  position: fixed;
  bottom: var(--space-4);
  right: var(--space-4);
  width: 60px;
  height: 60px;
  background-color: var(--color-accent);
  color: var(--color-white);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  box-shadow: var(--shadow-lg);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base);
  z-index: var(--z-fixed);
}

.whatsapp-float:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  background-color: var(--color-primary);
}

.resume-text {
  font-size: var(--text-xs);
  font-weight: 600;
  text-align: center;
  line-height: 1.2;
}

/* Mobile adjustments for floating button */
@media screen and (max-width: 767px) {
  .whatsapp-float {
    width: 56px;
    height: 56px;
    bottom: var(--space-3);
    right: var(--space-3);
  }

  .resume-text {
    font-size: 0.65rem;
  }
}

@media screen and (max-width: 479px) {
  .whatsapp-float {
    width: 52px;
    height: 52px;
    bottom: var(--space-2);
    right: var(--space-2);
  }
}

/* ============================================
   Keyboard Navigation Support
   ============================================ */

/* Enhanced focus-visible support for better UX */
/* Only show focus outline when navigating with keyboard */
*:focus:not(:focus-visible) {
  outline: none;
}

*:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Specific focus styles for interactive elements */
a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

.btn:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

.btn--primary:focus-visible {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.btn--secondary:focus-visible {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-accent);
}

.nav__link:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
  background-color: color-mix(in srgb, var(--color-accent) 10%, transparent);
}

.form__input:focus-visible,
.form__textarea:focus-visible,
select:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 0;
  border-color: var(--color-accent);
}

.social__link:focus-visible {
  outline: 3px solid var(--color-white);
  outline-offset: 2px;
}

.footer__link:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.repo__card:focus-within {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-color: var(--color-accent);
}

.skill__card:focus-within {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-color: var(--color-accent);
}

/* Legacy keyboard navigation class support */
.keyboard-navigation *:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ============================================
   Touch Target Accessibility (Mobile)
   ============================================ */

/* Ensure minimum 44x44px touch targets on mobile devices */
@media screen and (max-width: 767px) {
  /* Buttons */
  .btn,
  .nav__toggle,
  .social__link,
  .whatsapp-float {
    min-width: 44px;
    min-height: 44px;
  }

  /* Navigation links */
  .nav__link {
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  /* Form inputs */
  .form__input,
  .form__textarea,
  select {
    min-height: 44px;
  }

  /* Footer links */
  .footer__link {
    display: inline-block;
    min-height: 44px;
    line-height: 44px;
  }

  /* Contact items */
  .contact__item {
    min-height: 44px;
  }

  /* Repository cards - ensure clickable area */
  .repo__card {
    min-height: 44px;
  }

  /* Skill cards */
  .skill__card {
    min-height: 44px;
  }
}

/* ============================================
   Responsive Images
   ============================================ */

/* Make all images responsive by default */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Lazy loading images */
img.lazy {
  opacity: 0;
  transition: opacity 0.3s;
}

img.lazy:not([data-src]) {
  opacity: 1;
}

/* Specific responsive image handling */
.about-img,
.github__avatar-img,
.logo-img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* Prevent layout shift with aspect ratio */
.about-img {
  aspect-ratio: 1 / 1;
}

.github__avatar-img {
  aspect-ratio: 1 / 1;
}

/* ============================================
   Additional Mobile Optimizations
   ============================================ */

/* Improve tap highlight color on mobile */
@media screen and (max-width: 767px) {
  * {
    -webkit-tap-highlight-color: color-mix(
      in srgb,
      var(--color-accent) 20%,
      transparent
    );
  }

  /* Prevent text size adjustment on orientation change */
  html {
    -webkit-text-size-adjust: 100%;
    -moz-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
    text-size-adjust: 100%;
  }

  /* Improve scrolling performance */
  body {
    -webkit-overflow-scrolling: touch;
  }

  /* Optimize font rendering on mobile */
  body {
    text-rendering: optimizeSpeed;
  }
}

/* ============================================
   Breakpoint Summary
   Mobile: 320px - 768px
   Tablet: 768px - 1024px
   Desktop: 1024px+
   ============================================ */

/* ============================================
   Cursor Styles for Interactive Elements
   ============================================ */

/* Ensure all clickable elements have pointer cursor */
a,
button,
.btn,
.nav__link,
.nav__toggle,
.social__link,
.footer__link,
.contact__value,
.repo__name a,
.repo__demo,
.whatsapp-float,
input[type="submit"],
input[type="button"],
input[type="reset"],
select {
  cursor: pointer;
}

/* Non-clickable interactive elements */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="password"],
textarea {
  cursor: text;
}

/* Disabled elements */
button:disabled,
input:disabled,
select:disabled,
textarea:disabled,
.btn:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

/* ============================================
   Toast Notifications
   ============================================ */

.toast-container {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: var(--z-tooltip);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  pointer-events: none;
}

.toast {
  background-color: var(--color-white);
  color: var(--color-text);
  padding: var(--space-3) var(--space-4);
  border-radius: 16px;
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 300px;
  max-width: 400px;
  pointer-events: auto;
  opacity: 0;
  transform: translateX(400px);
  animation: toastSlideIn 300ms cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.toast.toast--hiding {
  animation: toastSlideOut 300ms cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes toastSlideIn {
  from {
    opacity: 0;
    transform: translateX(400px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes toastSlideOut {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(400px);
  }
}

.toast__icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
}

.toast__content {
  flex: 1;
}

.toast__title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-1);
}

.toast__message {
  font-size: var(--text-xs);
  color: var(--color-text-light);
  line-height: 1.4;
}

.toast__close {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  background: none;
  border: none;
  color: var(--color-text-light);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast);
}

.toast__close:hover {
  background-color: var(--color-secondary);
  color: var(--color-primary);
}

/* Toast variants */
.toast--success {
  border-left: 4px solid #38a169;
}

.toast--success .toast__icon {
  color: #38a169;
}

.toast--error {
  border-left: 4px solid #e53e3e;
}

.toast--error .toast__icon {
  color: #e53e3e;
}

.toast--warning {
  border-left: 4px solid #dd6b20;
}

.toast--warning .toast__icon {
  color: #dd6b20;
}

.toast--info {
  border-left: 4px solid #3182ce;
}

.toast--info .toast__icon {
  color: #3182ce;
}

/* Mobile toast adjustments */
@media screen and (max-width: 767px) {
  .toast-container {
    top: var(--space-3);
    right: var(--space-3);
    left: var(--space-3);
  }

  .toast {
    min-width: auto;
    max-width: none;
  }
}

/* ============================================
   Enhanced Loading Spinner
   ============================================ */

.elegant-spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: var(--radius-full);
  animation: elegantSpin 1s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
}

@keyframes elegantSpin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Pulse loading animation */
.pulse-loader {
  display: flex;
  gap: var(--space-1);
  align-items: center;
  justify-content: center;
}

.pulse-loader__dot {
  width: 8px;
  height: 8px;
  background-color: var(--color-accent);
  border-radius: var(--radius-full);
  animation: pulseDot 1.4s ease-in-out infinite;
}

.pulse-loader__dot:nth-child(1) {
  animation-delay: 0s;
}

.pulse-loader__dot:nth-child(2) {
  animation-delay: 0.2s;
}

.pulse-loader__dot:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes pulseDot {
  0%, 80%, 100% {
    transform: scale(0.6);
    opacity: 0.5;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

/* ============================================
   Ripple Effect (Optional)
   ============================================ */

.btn--ripple {
  position: relative;
  overflow: hidden;
}

.ripple {
  position: absolute;
  border-radius: var(--radius-full);
  background-color: rgba(255, 255, 255, 0.6);
  transform: scale(0);
  animation: rippleEffect 600ms ease-out;
  pointer-events: none;
}

@keyframes rippleEffect {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* ============================================
   Enhanced Hover Effects
   ============================================ */

/* Subtle scale on hover for cards */
.skill__card,
.repo__card,
.feature-card,
.about__stat-card {
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.skill__card:hover,
.repo__card:hover,
.feature-card:hover,
.about__stat-card:hover {
  transform: translateY(-4px) scale(1.01);
}

/* Smooth color transitions for links */
a {
  transition:
    color var(--transition-base),
    background-color var(--transition-base),
    border-color var(--transition-base);
}

/* Button press effect */
.btn:active {
  transform: translateY(0) scale(0.98);
}

/* Icon rotation on hover */
.social__link:hover .social__icon {
  animation: iconRotate 400ms ease-in-out;
}

@keyframes iconRotate {
  0% {
    transform: rotate(0deg);
  }
  50% {
    transform: rotate(-10deg);
  }
  100% {
    transform: rotate(0deg);
  }
}

/* Underline animation for nav links */
.nav__link::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-accent);
  transition: width var(--transition-base);
}

.nav__link:hover::before {
  width: 100%;
}

/* Glow effect on focus */
.form__input:focus,
.form__textarea:focus {
  box-shadow:
    0 0 0 3px color-mix(in srgb, var(--color-accent) 10%, transparent),
    0 0 20px color-mix(in srgb, var(--color-accent) 5%, transparent);
}

/* Smooth background transitions */
.contact__item,
.skill__card,
.repo__card,
.feature-card {
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base),
    background-color var(--transition-base);
}

/* ============================================
   Easter Eggs (Optional - Subtle)
   ============================================ */

/* Konami code easter egg class */
.easter-egg-active {
  animation: rainbowBorder 3s linear infinite;
}

@keyframes rainbowBorder {
  0% {
    border-color: #ff0000;
  }
  16% {
    border-color: #ff7f00;
  }
  33% {
    border-color: #ffff00;
  }
  50% {
    border-color: #00ff00;
  }
  66% {
    border-color: #0000ff;
  }
  83% {
    border-color: #8b00ff;
  }
  100% {
    border-color: #ff0000;
  }
}

/* Secret hover effect on logo */
.brand-logo:active {
  animation: logoShake 500ms ease-in-out;
}

@keyframes logoShake {
  0%, 100% {
    transform: translateX(0);
  }
  10%, 30%, 50%, 70%, 90% {
    transform: translateX(-2px);
  }
  20%, 40%, 60%, 80% {
    transform: translateX(2px);
  }
}

/* ============================================
   Technical Cursor
   ============================================ */
.tech-cursor {
  position: fixed;
  top: 0;
  left: 0;
  width: 4px;
  height: 4px;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
}

.cursor-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 40px;
  height: 40px;
  border: 2px solid var(--color-accent);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  opacity: 0.6;
  transition: width 0.2s ease, height 0.2s ease, border-color 0.2s ease, opacity 0.2s ease;
}

.cursor-crosshair {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 4px;
  height: 4px;
  background-color: var(--color-accent);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.2s ease, height 0.2s ease, background-color 0.2s ease;
}

.tech-cursor.clicking .cursor-ring {
  width: 30px;
  height: 30px;
  border-width: 3px;
}

@media (pointer: coarse), (max-width: 1023px) {
  .tech-cursor {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .tech-cursor {
    display: none;
  }
}