/* ===================================
   CSS Variables & Theme
   =================================== */
:root {
  /* Colors - Light Theme */
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: rgba(37, 99, 235, 0.1);
  --primary-glow: rgba(37, 99, 235, 0.4);
  --accent: #06b6d4;
  --accent-light: rgba(6, 182, 212, 0.1);
  --gradient-primary: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
  --gradient-text: linear-gradient(135deg, #2563eb 0%, #06b6d4 50%, #2563eb 100%);

  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --surface: #f1f5f9;

  --text: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;

  --border: #e2e8f0;
  --border-light: #f1f5f9;

  /* Enhanced Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 40px rgba(37, 99, 235, 0.15);
  --shadow-glow-lg: 0 0 60px rgba(37, 99, 235, 0.2);

  /* Spacing */
  --container-max: 1200px;
  --section-padding: clamp(4rem, 10vw, 8rem);

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --font-size-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --font-size-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
  --font-size-lg: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
  --font-size-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --font-size-2xl: clamp(1.5rem, 1.2rem + 1.5vw, 2rem);
  --font-size-3xl: clamp(2rem, 1.5rem + 2.5vw, 3rem);
  --font-size-4xl: clamp(2.5rem, 2rem + 3vw, 4rem);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;
  --radius-full: 9999px;
}

/* Dark Theme */
[data-theme="dark"] {
  --bg: #0f172a;
  --bg-alt: #1e293b;
  --surface: #334155;

  --text: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;

  --border: #334155;
  --border-light: #1e293b;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
}

/* ===================================
   Base Reset & Global Styles
   =================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  transition: background-color var(--transition-base), color var(--transition-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
}

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

ul, ol {
  list-style: none;
}

/* ===================================
   Utility Classes
   =================================== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--text);
  text-align: center;
  margin-bottom: 3rem;
  position: relative;
}

.section__title::after {
  content: '';
  position: absolute;
  bottom: -0.75rem;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  animation: shimmer 2s ease-in-out infinite;
}

@keyframes shimmer {
  0%, 100% { opacity: 1; width: 80px; }
  50% { opacity: 0.7; width: 100px; }
}

/* Animation Classes */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===================================
   Buttons
   =================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  min-height: 48px;
  min-width: 48px;
}

.btn--primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow), 0 0 0 rgba(37, 99, 235, 0);
  position: relative;
  overflow: hidden;
}

.btn--primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s ease;
}

.btn--primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg), 0 0 30px var(--primary-glow);
}

.btn--primary:hover::before {
  left: 100%;
}

.btn--primary:active {
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  color: var(--text);
  border: 2px solid var(--border);
  position: relative;
  overflow: hidden;
}

.btn--outline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  background: var(--primary-light);
  transition: width var(--transition-base);
  z-index: -1;
}

.btn--outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-3px);
}

.btn--outline:hover::before {
  width: 100%;
}

.btn--outline:active {
  transform: translateY(-1px);
}

/* ===================================
   Header & Navigation
   =================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
  transition: all var(--transition-base);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .header {
  background: rgba(15, 23, 42, 0.7);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .header.scrolled {
  background: rgba(15, 23, 42, 0.9);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.nav__logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
  transition: transform var(--transition-fast);
}

.nav__logo:hover {
  transform: scale(1.05);
}

.nav__menu {
  display: flex;
  align-items: center;
}

.nav__list {
  display: flex;
  gap: 2rem;
}

.nav__link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.5rem 0;
  transition: color var(--transition-fast);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width var(--transition-base);
}

.nav__link:hover,
.nav__link.active {
  color: var(--primary);
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

.nav__close {
  display: none;
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--text-secondary);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.toggle-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.toggle-btn:hover {
  color: white;
  transform: scale(1.1);
  box-shadow: 0 0 15px var(--primary-glow);
}

.toggle-btn:hover::before {
  opacity: 1;
}

.toggle-btn svg,
.toggle-btn .lang-text {
  position: relative;
  z-index: 1;
}

.lang-text {
  font-size: var(--font-size-xs);
  font-weight: 600;
}

/* Theme toggle icons */
[data-theme="light"] .icon-moon {
  display: none;
}

[data-theme="dark"] .icon-sun {
  display: none;
}

.nav__toggle {
  display: none;
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav__menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background: var(--bg);
    padding: 6rem 2rem 2rem;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
    transition: right var(--transition-base);
    z-index: 100;
  }

  .nav__menu.show {
    right: 0;
  }

  .nav__list {
    flex-direction: column;
    gap: 1.5rem;
    width: 100%;
  }

  .nav__link {
    font-size: var(--font-size-lg);
    display: block;
    padding: 0.75rem 0;
  }

  .nav__close {
    display: flex;
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    color: var(--text);
    background: var(--surface);
    border-radius: var(--radius);
  }

  .nav__toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    color: var(--text);
  }
}

/* ===================================
   Hero Section
   =================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 4.5rem;
  background: var(--bg);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(circle at 20% 50%, var(--primary-light) 0%, transparent 40%),
    radial-gradient(circle at 80% 20%, var(--accent-light) 0%, transparent 35%),
    radial-gradient(circle at 60% 80%, rgba(37, 99, 235, 0.08) 0%, transparent 30%);
  animation: heroGradient 15s ease-in-out infinite;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  top: 10%;
  right: 5%;
  width: 300px;
  height: 300px;
  background: var(--gradient-primary);
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.15;
  animation: float 8s ease-in-out infinite;
}

@keyframes heroGradient {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  33% { transform: translate(2%, 2%) rotate(1deg); }
  66% { transform: translate(-1%, 1%) rotate(-1deg); }
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.05); }
}

.hero .container {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding-top: 2rem;
  padding-bottom: 4rem;
}

.hero__content {
  max-width: 800px;
}

.hero__greeting {
  display: inline-block;
  font-size: var(--font-size-lg);
  color: var(--primary);
  font-weight: 500;
  margin-bottom: 0.5rem;
  opacity: 0;
  animation: fadeInUp 0.6s ease-out 0.2s forwards;
}

.hero__name {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--text);
  line-height: 1.1;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
  opacity: 0;
  animation: fadeInUp 0.6s ease-out 0.4s forwards;
}

.hero__title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% auto;
  animation: fadeInUp 0.6s ease-out 0.6s forwards, gradientShift 3s ease-in-out infinite;
  opacity: 0;
  margin-bottom: 0.5rem;
}

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

@keyframes gradientShift {
  0%, 100% { background-position: 0% center; }
  50% { background-position: 100% center; }
}

.hero__subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeInUp 0.6s ease-out 0.8s forwards;
}

.hero__description {
  font-size: var(--font-size-lg);
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 2rem;
  line-height: 1.7;
  opacity: 0;
  animation: fadeInUp 0.6s ease-out 1s forwards;
}

.hero__buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeInUp 0.6s ease-out 1.2s forwards;
}

.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
}

.scroll-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--surface);
  color: var(--text-muted);
  animation: bounce 2s infinite;
  transition: all var(--transition-fast);
}

.scroll-indicator:hover {
  color: var(--primary);
  background: var(--primary-light);
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-10px);
  }
  60% {
    transform: translateX(-50%) translateY(-5px);
  }
}

/* ===================================
   About Section
   =================================== */
.about {
  padding: var(--section-padding) 0;
  background: var(--bg-alt);
}

.about__content {
  max-width: 800px;
  margin: 0 auto 4rem;
  text-align: center;
}

.about__text p {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 2rem;
}

.about__stats {
  display: flex;
  justify-content: center;
  gap: 4rem;
}

.stat {
  text-align: center;
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.stat:hover {
  background: var(--primary-light);
  transform: scale(1.05);
}

.stat__number {
  display: block;
  font-size: var(--font-size-3xl);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat__label {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Skills */
.skills {
  margin-top: 4rem;
}

.skills__title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 1.5rem;
  max-width: 800px;
  margin: 0 auto;
}

.skill {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: 1.5rem 1rem;
  background: var(--bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: all var(--transition-base);
  cursor: default;
}

.skill:hover {
  transform: translateY(-8px) scale(1.05);
  box-shadow: var(--shadow-lg), 0 0 20px var(--primary-glow);
  border-color: var(--primary);
  background: linear-gradient(135deg, var(--bg) 0%, var(--primary-light) 100%);
}

.skill:hover .skill__icon {
  transform: scale(1.1);
}

.skill__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-base);
}

.skill__icon svg {
  width: 40px;
  height: 40px;
}

.skill__name {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  text-align: center;
}

/* ===================================
   Projects Section
   =================================== */
.projects {
  padding: var(--section-padding) 0;
  background: var(--bg);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 2rem;
}

@media (min-width: 640px) {
  .projects__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .projects__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.project-card {
  background: var(--bg);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  position: relative;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: var(--radius-xl);
  background: var(--gradient-primary);
  opacity: 0;
  z-index: -1;
  transition: opacity var(--transition-base);
}

.project-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  border-color: transparent;
}

.project-card:hover::before {
  opacity: 0.05;
}

.project-card__image {
  position: relative;
  height: 200px;
  background: var(--surface);
  overflow: hidden;
}

.project-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project-card:hover .project-card__image img {
  transform: scale(1.05);
}

.project-card__placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--surface) 100%);
}

.project-card__placeholder svg {
  width: 64px;
  height: 64px;
  color: var(--primary);
  opacity: 0.5;
}

.project-card__content {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  text-align: center;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
  justify-content: center;
}

.project-card__tag {
  font-size: var(--font-size-xs);
  font-weight: 500;
  padding: 0.25rem 0.75rem;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-full);
}

.project-card__title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.75rem;
}

.project-card__description {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 1.5rem;
}

.project-card__links {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.project-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  background: var(--surface);
  transition: all var(--transition-fast);
  min-height: 44px;
}

.project-card__link:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.project-card__link svg {
  width: 18px;
  height: 18px;
}

/* ===================================
   Contact Section
   =================================== */
.contact {
  padding: var(--section-padding) 0;
  background: var(--bg-alt);
}

.contact__subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-muted);
  text-align: center;
  margin-top: -2rem;
  margin-bottom: 3rem;
}

.contact__content {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3rem;
}

.contact__info {
  width: 100%;
}

.contact__item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--bg);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.contact__item::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, var(--primary-light), transparent);
  transition: left 0.5s ease;
}

.contact__item:hover {
  border-color: var(--primary);
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.contact__item:hover::before {
  left: 100%;
}

.contact__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--primary-light);
  border-radius: var(--radius-md);
  color: var(--primary);
  flex-shrink: 0;
}

.contact__text {
  display: flex;
  flex-direction: column;
}

.contact__label {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.contact__value {
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--text);
}

.contact__social {
  text-align: center;
}

.contact__social-label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.social__links {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.social__link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.social__link::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: var(--gradient-primary);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: all var(--transition-base);
  z-index: 0;
}

.social__link svg {
  position: relative;
  z-index: 1;
  transition: transform var(--transition-fast);
}

.social__link:hover {
  color: white;
  border-color: transparent;
  transform: translateY(-5px) rotate(5deg);
  box-shadow: var(--shadow-lg), 0 0 20px var(--primary-glow);
}

.social__link:hover::before {
  width: 150%;
  height: 150%;
}

.social__link:hover svg {
  transform: scale(1.1);
}

/* ===================================
   Footer
   =================================== */
.footer {
  padding: 2rem 0;
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.footer .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.footer__copyright {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.footer__made {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.footer__made .heart {
  color: #ef4444;
  animation: heartbeat 1.5s infinite;
}

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

/* ===================================
   Responsive Adjustments
   =================================== */
@media (max-width: 480px) {
  .hero__buttons {
    flex-direction: column;
    width: 100%;
  }

  .hero__buttons .btn {
    width: 100%;
  }

  .about__stats {
    gap: 2rem;
  }

  .skills__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
  }

  .skill {
    padding: 1rem 0.5rem;
  }
}

/* ===================================
   Skill Icons (SVG colors)
   =================================== */
.skill__icon--python { color: #3776ab; }
.skill__icon--django { color: #092e20; }
.skill__icon--javascript { color: #f7df1e; }
.skill__icon--vuejs { color: #4fc08d; }
.skill__icon--php { color: #777bb4; }
.skill__icon--laravel { color: #ff2d20; }
.skill__icon--mysql { color: #4479a1; }
.skill__icon--html5 { color: #e34f26; }
.skill__icon--css3 { color: #1572b6; }
.skill__icon--git { color: #f05032; }

[data-theme="dark"] .skill__icon--django { color: #44b78b; }
[data-theme="dark"] .skill__icon--javascript { color: #f7df1e; }