/* ==========================================================================
   Premium Portfolio Website Styles
   ========================================================================== */

/* CSS Custom Properties (Variables) */
:root {
  /* Colors - Light Theme */
  --color-primary: #1e3a8a;
  --color-primary-dark: #1e40af;
  --color-secondary: #2563eb;
  --color-accent: #f093fb;
  
  /* Grayscale */
  --color-white: #ffffff;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  
  /* Dark Theme Colors */
  --color-dark-bg: #0a0a0a;
  --color-dark-surface: #1a1a1a;
  --color-dark-surface-light: #2a2a2a;
  --color-dark-border: #333333;
  --color-dark-text: #ffffff;
  --color-dark-text-secondary: #a0a0a0;
  
  /* Theme Variables */
  --bg-primary: var(--color-white);
  --bg-secondary: var(--color-gray-50);
  --bg-surface: var(--color-white);
  --text-primary: var(--color-gray-900);
  --text-secondary: var(--color-gray-600);
  --text-muted: var(--color-gray-500);
  --border-color: var(--color-gray-200);
  --shadow-color: rgba(0, 0, 0, 0.1);
  
  /* Typography */
  --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', monospace;
  
  /* Font Sizes */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;
  --font-size-7xl: 4.5rem;
  
  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-base: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 2.5rem;
  --spacing-3xl: 3rem;
  --spacing-4xl: 4rem;
  --spacing-5xl: 5rem;
  --spacing-6xl: 6rem;
  
  /* Borders */
  --border-radius-sm: 0.375rem;
  --border-radius-base: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;
  --border-radius-2xl: 1.5rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-base: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* Transitions */
  --transition-fast: 0.15s ease-out;
  --transition-base: 0.3s ease-out;
  --transition-slow: 0.5s ease-out;
  
  /* Breakpoints */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
  
  /* Z-indexes */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;
  --z-toast: 1070;
}

/* Dark Theme */
.dark-theme {
  --bg-primary: var(--color-dark-bg);
  --bg-secondary: var(--color-dark-surface);
  --bg-surface: var(--color-dark-surface-light);
  --text-primary: var(--color-dark-text);
  --text-secondary: var(--color-dark-text-secondary);
  --text-muted: var(--color-gray-500);
  --border-color: var(--color-dark-border);
  --shadow-color: rgba(0, 0, 0, 0.3);
}

/* ==========================================================================
   Reset and Base Styles
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  cursor: none;
  overflow-x: hidden;
}

/* Custom Text Selection */
::selection {
  background-color: var(--color-primary);
  color: var(--color-white);
}

::-moz-selection {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: 4px;
  transition: background var(--transition-base);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary-dark);
}

/* ==========================================================================
   Custom Cursor
   ========================================================================== */

.cursor {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: var(--z-tooltip);
  mix-blend-mode: difference;
}

.cursor__dot {
  width: 8px;
  height: 8px;
  background-color: var(--color-white);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: transform var(--transition-fast);
}

.cursor__ring {
  position: absolute;
  top: -12px;
  left: -12px;
  width: 32px;
  height: 32px;
  border: 2px solid var(--color-white);
  border-radius: 50%;
  opacity: 0.3;
  transform: scale(0);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.cursor--hover .cursor__ring {
  transform: scale(1);
  opacity: 1;
}

.cursor--click .cursor__dot {
  transform: translate(-50%, -50%) scale(0.5);
}

/* ==========================================================================
   Loading Screen
   ========================================================================== */

.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  opacity: 1;
  visibility: visible;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
}

.loading-screen__content {
  text-align: center;
}

.loading-screen__logo {
  margin-bottom: var(--spacing-lg);
}

.loading-bar {
  width: 300px;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  overflow: hidden;
  margin: 0 auto;
}

.loading-bar__progress {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  border-radius: 2px;
  animation: loadingProgress 2s ease-in-out infinite;
  transform: translateX(-100%);
}

@keyframes loadingProgress {
  0% {
    transform: translateX(-100%);
  }
  50% {
    transform: translateX(0%);
  }
  100% {
    transform: translateX(100%);
  }
}

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

.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  z-index: var(--z-fixed);
  transition: all var(--transition-base);
}

.dark-theme .nav {
  background: rgba(10, 10, 10, 0.8);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav__container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.nav__logo-link {
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: var(--font-size-xl);
  transition: color var(--transition-base);
}

.nav__logo-link:hover {
  color: var(--color-primary);
}

.nav__menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-xl);
}

.nav__link {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  position: relative;
  transition: color var(--transition-base);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition-base);
}

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

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

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.theme-toggle {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--border-radius-base);
  transition: all var(--transition-base);
  position: relative;
}

.theme-toggle:hover {
  color: var(--color-primary);
  background: var(--bg-secondary);
}

.theme-toggle__icon {
  display: block;
  transition: transform var(--transition-base);
}

.theme-toggle__icon--moon {
  display: none;
}

.dark-theme .theme-toggle__icon--sun {
  display: none;
}

.dark-theme .theme-toggle__icon--moon {
  display: block;
}

.nav__mobile-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  gap: 4px;
}

.nav__mobile-toggle-line {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-base);
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav__menu {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    height: calc(100vh - 80px);
    background: var(--bg-primary);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2xl);
    transform: translateX(-100%);
    transition: transform var(--transition-base);
  }

  .nav__menu.active {
    transform: translateX(0);
  }

  .nav__mobile-toggle {
    display: flex;
  }

  .nav__mobile-toggle.active .nav__mobile-toggle-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
  }

  .nav__mobile-toggle.active .nav__mobile-toggle-line:nth-child(2) {
    opacity: 0;
  }

  .nav__mobile-toggle.active .nav__mobile-toggle-line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
  }
}

/* ==========================================================================
   Typography
   ========================================================================== */

.section__title {
  font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
  font-weight: 700;
  line-height: var(--line-height-tight);
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
}

.section__subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  max-width: 600px;
  text-align: center;
  margin: 0 auto;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg) var(--spacing-2xl);
  border: none;
  border-radius: var(--border-radius-xl);
  font-family: inherit;
  font-size: var(--font-size-base);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn::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 var(--transition-slow);
}

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

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: var(--color-white);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.btn--secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border-color);
}

.btn--secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.btn--small {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-sm);
}

.btn--full {
  width: 100%;
  justify-content: center;
}

.btn__icon {
  font-size: var(--font-size-lg);
  transition: transform var(--transition-base);
}

.btn:hover .btn__icon {
  transform: translateX(4px);
}

.btn__loader {
  display: none;
}

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

.btn--loading .btn__loader {
  display: block;
}

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

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

.hero__gradient {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 30% 20%, rgba(30, 58, 138, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 70% 80%, rgba(37, 99, 235, 0.1) 0%, transparent 50%);
}

.hero__canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.6;
}

.hero__container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
  text-align: center;
  position: relative;
}

.hero__status {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: rgba(102, 126, 234, 0.1);
  border: 1px solid rgba(102, 126, 234, 0.2);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius-2xl);
  color: var(--color-primary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin-bottom: var(--spacing-2xl);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.hero__status-indicator {
  width: 8px;
  height: 8px;
  background: #10b981;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero__title {
  font-size: clamp(var(--font-size-4xl), 8vw, var(--font-size-7xl));
  font-weight: 800;
  line-height: var(--line-height-tight);
  color: var(--text-primary);
  margin-bottom: var(--spacing-xl);
  overflow: hidden;
}

.hero__title-line {
  display: block;
  overflow: hidden;
}

.hero__title-word {
  display: inline-block;
  opacity: 0;
  transform: translateY(100%);
  animation: slideUp 0.8s ease forwards;
}

.hero__title-word--accent {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__title-line:nth-child(1) .hero__title-word:nth-child(1) { animation-delay: 0.1s; }
.hero__title-line:nth-child(1) .hero__title-word:nth-child(2) { animation-delay: 0.2s; }
.hero__title-line:nth-child(2) .hero__title-word:nth-child(1) { animation-delay: 0.3s; }
.hero__title-line:nth-child(2) .hero__title-word:nth-child(2) { animation-delay: 0.4s; }
.hero__title-line:nth-child(3) .hero__title-word:nth-child(1) { animation-delay: 0.5s; }

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

.hero__subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  max-width: 600px;
  margin: 0 auto var(--spacing-3xl);
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s ease 0.8s forwards;
}

.hero__actions {
  display: flex;
  gap: var(--spacing-lg);
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s ease 1s forwards;
}

.hero__scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 0;
  right: 0;
  margin: 0 auto;
  text-align: center;
  opacity: 0;
  animation: fadeInUp 0.8s ease 1.2s forwards;
  z-index: 10;
  width: 100%;
}

.hero__scroll-text {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-weight: 500;
  white-space: nowrap;
}

.hero__scroll-arrow {
  color: var(--text-secondary);
  animation: bounce 2s infinite;
  display: inline-block;
}

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

/* Hide scroll indicator on mobile and tablets */
@media (max-width: 1024px) {
  .hero__scroll-indicator {
    display: none;
  }
}

/* Ensure scroll indicator doesn't interfere with content */
@media (max-height: 700px) {
  .hero__scroll-indicator {
    bottom: 20px;
  }
}

.hero__credit {
  position: absolute;
  bottom: 5px;
  left: 0;
  right: 0;
  margin: 0 auto;
  z-index: 5;
  opacity: 0.7;
  transition: opacity 0.3s ease;
  width: 100%;
  text-align: center;
}

.hero__credit:hover {
  opacity: 1;
}

.hero__credit-text {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 400;
  letter-spacing: 0.025em;
  user-select: none;
}



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

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

.about {
  padding: var(--spacing-6xl) 0;
  background: var(--bg-secondary);
}

.about__container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.about__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-5xl);
  align-items: center;
}

.about__description {
  margin-top: var(--spacing-xl);
}

.about__description p {
  margin-bottom: var(--spacing-lg);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
}

.about__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
}

.stat {
  text-align: center;
  padding: var(--spacing-2xl);
  background: var(--bg-surface);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-base);
}

.stat:hover {
  transform: translateY(-5px);
}

.stat__number {
  display: block;
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.stat__label {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ==========================================================================
   Services Section
   ========================================================================== */

.services {
  padding: var(--spacing-6xl) 0;
}

.services__container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.services__header {
  text-align: center;
  margin-bottom: var(--spacing-5xl);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-3xl);
}

.service-card {
  background: var(--bg-surface);
  border-radius: var(--border-radius-2xl);
  padding: var(--spacing-3xl);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-2xl);
}

.service-card__icon {
  width: 60px;
  height: 60px;
  background: transparent;
  border-radius: var(--border-radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  margin: 0 auto var(--spacing-xl) auto;
  transition: transform var(--transition-base);
}

.service-card:hover .service-card__icon {
  transform: scale(1.1);
}

.service-card__title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
}

.service-card__description {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-xl);
}

.service-card__features {
  list-style: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
}

.service-card__features li {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  position: relative;
  padding-left: var(--spacing-lg);
  text-align: center;
}

.service-card__features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 600;
}

/* ==========================================================================
   Portfolio Section
   ========================================================================== */

.portfolio {
  padding: var(--spacing-6xl) 0;
  background: var(--bg-secondary);
}

.portfolio__container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.portfolio__header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.portfolio__filters {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-5xl);
  flex-wrap: wrap;
}

.filter-btn {
  background: none;
  border: 2px solid var(--border-color);
  color: var(--text-secondary);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius-2xl);
  cursor: pointer;
  transition: all var(--transition-base);
  font-weight: 500;
}

.filter-btn:hover,
.filter-btn--active {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(102, 126, 234, 0.1);
}

.portfolio__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--spacing-3xl);
}

.portfolio-card {
  background: var(--bg-surface);
  border-radius: var(--border-radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
}

.portfolio-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-2xl);
}

.portfolio-card__image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
}

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

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

.portfolio-card__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.portfolio-card:hover .portfolio-card__overlay {
  opacity: 1;
}

.portfolio-card__actions {
  display: flex;
  gap: var(--spacing-lg);
}

.portfolio-card__content {
  padding: var(--spacing-2xl);
}

.portfolio-card__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
}

.portfolio-card__description {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-lg);
}

.portfolio-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.tag {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ==========================================================================
   Tech Stack Section
   ========================================================================== */

.tech-stack {
  padding: var(--spacing-6xl) 0;
}

.tech-stack__container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.tech-stack__header {
  text-align: center;
  margin-bottom: var(--spacing-5xl);
}

.tech-stack__categories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-4xl);
}

.tech-category {
  text-align: center;
}

.tech-category__title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-2xl);
}

.tech-category__skills {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.skill-card {
  background: var(--bg-surface);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-base);
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.skill-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.skill-card__icon {
  width: 48px;
  height: 48px;
  background: transparent;
  border-radius: var(--border-radius-base);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  flex-shrink: 0;
}

.skill-card__name {
  font-weight: 600;
  color: var(--text-primary);
  flex-grow: 1;
  text-align: left;
}

.skill-card__level {
  flex: 1;
  max-width: 100px;
}

.skill-card__bar {
  width: 100%;
  height: 4px;
  background: var(--bg-secondary);
  border-radius: 2px;
  overflow: hidden;
}

.skill-card__progress {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  border-radius: 2px;
  width: 0;
  transition: width 1s ease;
}

/* ==========================================================================
   Testimonials Section
   ========================================================================== */

.testimonials {
  padding: var(--spacing-6xl) 0;
  background: var(--bg-secondary);
}

.testimonials__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.testimonials__header {
  text-align: center;
  margin-bottom: var(--spacing-5xl);
}

.testimonials__carousel {
  position: relative;
  overflow: hidden;
  margin-bottom: var(--spacing-3xl);
}

.testimonial-card {
  background: var(--bg-surface);
  border-radius: var(--border-radius-2xl);
  padding: var(--spacing-3xl);
  box-shadow: var(--shadow-lg);
  text-align: center;
  opacity: 0;
  transform: translateX(100px);
  transition: all var(--transition-base);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
}

.testimonial-card--active {
  opacity: 1;
  transform: translateX(0);
  position: relative;
}

.testimonial-card__rating {
  margin-bottom: var(--spacing-lg);
}

.star {
  color: #fbbf24;
  font-size: var(--font-size-lg);
}

.testimonial-card__quote {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-2xl);
  font-style: italic;
}

.testimonial-card__author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-lg);
}

.testimonial-card__avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  overflow: hidden;
}

.testimonial-card__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.testimonial-card__info {
  text-align: left;
}

.testimonial-card__name {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.testimonial-card__title {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.testimonials__controls {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
}

.testimonials__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--border-color);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
}

.testimonials__dot--active,
.testimonials__dot:hover {
  background: var(--color-primary);
  transform: scale(1.2);
}

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

.contact {
  padding: var(--spacing-6xl) 0;
}

.contact__container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.contact__header {
  text-align: center;
  margin-bottom: var(--spacing-5xl);
}

.contact__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-5xl);
  align-items: start;
}

.contact__item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.contact__item-icon {
  width: 48px;
  height: 48px;
  background: transparent;
  border-radius: var(--border-radius-base);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  flex-shrink: 0;
}

.contact__item-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.contact__item-text {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
}

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

.contact__link:hover {
  color: var(--color-primary-dark);
}

.contact__copy-btn {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  font-size: var(--font-size-xs);
  margin-top: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: all var(--transition-base);
}

.contact__copy-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.contact__status {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.contact__status-indicator {
  width: 8px;
  height: 8px;
  background: #10b981;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.contact__social {
  display: flex;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.contact__social-link {
  width: 48px;
  height: 48px;
  background: var(--bg-surface);
  border-radius: var(--border-radius-base);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-base);
}

.contact__social-link:hover {
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* ==========================================================================
   Form Styles
   ========================================================================== */

.contact__form {
  background: var(--bg-surface);
  padding: var(--spacing-3xl);
  border-radius: var(--border-radius-2xl);
  box-shadow: var(--shadow-lg);
}

.form__group {
  margin-bottom: var(--spacing-xl);
}

.form__label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.form__input,
.form__textarea {
  width: 100%;
  padding: var(--spacing-lg);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-base);
  font-family: inherit;
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background: var(--bg-primary);
  transition: border-color var(--transition-base);
}

.form__input:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

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

.form__error {
  display: block;
  color: #ef4444;
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-sm);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  background: var(--bg-secondary);
  padding: var(--spacing-5xl) 0 var(--spacing-xl);
}

.footer__container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.footer__content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-5xl);
  margin-bottom: var(--spacing-3xl);
}

.footer__brand {
  max-width: 400px;
}

.footer__logo {
  margin-bottom: var(--spacing-lg);
}

.footer__logo-text {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-primary);
}

.footer__description {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
}

.footer__links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-2xl);
}

.footer__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
}

.footer__list {
  list-style: none;
}

.footer__list li {
  margin-bottom: var(--spacing-sm);
}

.footer__link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-base);
}

.footer__link:hover {
  color: var(--color-primary);
}

.footer__bottom {
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

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

/* ==========================================================================
   Responsive Design
   ========================================================================== */

/* Tablet */
@media (max-width: 1024px) {
  .about__content {
    grid-template-columns: 1fr;
    gap: var(--spacing-4xl);
  }

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

  .contact__content {
    grid-template-columns: 1fr;
    gap: var(--spacing-4xl);
  }

  .footer__content {
    grid-template-columns: 1fr;
    gap: var(--spacing-3xl);
  }
}

/* Mobile */
@media (max-width: 768px) {
  .nav__container {
    padding: 0 var(--spacing-lg);
  }

  .hero__actions {
    flex-direction: column;
    align-items: center;
  }



  .services__grid {
    grid-template-columns: 1fr;
  }

  .portfolio__grid {
    grid-template-columns: 1fr;
  }

  .tech-stack__categories {
    grid-template-columns: 1fr;
  }

  .about__stats {
    grid-template-columns: 1fr;
  }

  .footer__links {
    grid-template-columns: 1fr;
  }

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

/* Small Mobile */
@media (max-width: 480px) {
  .hero__container,
  .about__container,
  .services__container,
  .portfolio__container,
  .tech-stack__container,
  .testimonials__container,
  .contact__container,
  .footer__container {
    padding: 0 var(--spacing-lg);
  }

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

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

  .btn {
    padding: var(--spacing-base) var(--spacing-lg);
  }

  .service-card,
  .portfolio-card,
  .testimonial-card,
  .contact__form {
    padding: var(--spacing-xl);
  }


}

/* ==========================================================================
   Animation Classes
   ========================================================================== */

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

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

.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: all 0.6s ease;
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  transition: all 0.6s ease;
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.scale-in {
  opacity: 0;
  transform: scale(0.8);
  transition: all 0.6s ease;
}

.scale-in.visible {
  opacity: 1;
  transform: scale(1);
}

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

.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.hidden {
  display: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

@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;
  }
}