:root {
  /* Light Mode Priority Palette */
  --bg: #F8FAFC;
  --bg-secondary: #FFFFFF;
  --surface: #FFFFFF;
  --surface-hover: #F1F5F9;
  --border: #E2E8F0;
  
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-highlight: #0F172A;
  
  --primary: #2563EB;
  --primary-hover: #1D4ED8;
  --accent: #8B5CF6;
  
  --header-bg: rgba(255, 255, 255, 0.85);
  --header-border: #E2E8F0;
  --card-glow: rgba(0,0,0,0.03);

  --mockup-bg: #FFFFFF;
  --mockup-border: rgba(0,0,0,0.1);
  --mockup-header: #F1F5F9;
  --mockup-dots: rgba(0,0,0,0.2);

  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* Utils */
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  --bg: #0A0A0A;
  --bg-secondary: #0D1117;
  --surface: #18181B;
  --surface-hover: #27272A;
  --border: #27272A;
  
  --text-primary: #FFFFFF;
  --text-secondary: #A1A1AA;
  --text-highlight: #FFFFFF;
  
  --primary: #3B82F6;
  --primary-hover: #2563EB;
  --accent: #8B5CF6;

  --header-bg: rgba(10, 10, 10, 0.85);
  --header-border: #27272A;
  --card-glow: rgba(255,255,255,0.06);

  --mockup-bg: #000000;
  --mockup-border: rgba(255,255,255,0.1);
  --mockup-header: #18181b;
  --mockup-dots: rgba(255,255,255,0.2);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Base Styles */
h1, h2, h3, h4, .logo-text, .section-title {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.02em;
}

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.text-highlight { color: var(--text-highlight); }
.text-center { text-align: center; }
.w-full { width: 100%; }
.section-padding { padding: 100px 0; }

/* Grid Background & Glow */
.grid-bg {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image: 
    linear-gradient(to right, var(--card-glow) 1px, transparent 1px),
    linear-gradient(to bottom, var(--card-glow) 1px, transparent 1px);
  background-size: 40px 40px;
  z-index: -2;
  pointer-events: none;
}

.glow-bg {
  position: fixed;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, rgba(139, 92, 246, 0.05) 40%, rgba(10, 10, 10, 0) 70%);
  z-index: -1;
  pointer-events: none;
  filter: blur(40px);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  font-size: 16px;
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  box-shadow: 0 4px 14px 0 rgba(59, 130, 246, 0.39);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.45);
  color: white;
}

.btn-secondary {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.1);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-primary);
}

.btn-outline:hover {
  border-color: var(--text-secondary);
}

/* Header */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--header-border);
  z-index: 100;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.logo-text {
  font-size: 24px;
  color: var(--text-primary);
  background: linear-gradient(to right, var(--text-primary), var(--text-secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  font-size: 15px;
  font-weight: 500;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Theme Toggle */
.theme-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.theme-btn:hover {
  color: var(--text-primary);
}

[data-theme="dark"] .icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: block; }
:root:not([data-theme="dark"]) .icon-moon { display: block; }
:root:not([data-theme="dark"]) .icon-sun { display: none; }

/* Lang Switcher */
.lang-switcher {
  position: relative;
}

.lang-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: inherit;
  font-weight: 500;
  padding: 8px;
}

.lang-btn:hover {
  color: var(--text-primary);
}

.lang-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px;
  display: none;
  flex-direction: column;
  min-width: 80px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.5);
}

.lang-dropdown.show {
  display: flex;
}

.lang-dropdown span {
  padding: 8px 12px;
  font-size: 14px;
  cursor: pointer;
  border-radius: 4px;
  color: var(--text-secondary);
  transition: background 0.2s;
}

.lang-dropdown span:hover, .lang-dropdown span.active {
  background: rgba(255,255,255,0.05);
  color: var(--text-primary);
}

/* Mobile Menu */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 24px;
  height: 24px;
  flex-direction: column;
  justify-content: space-around;
  padding: 2px 0;
}

.mobile-menu-btn span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
}

.mobile-menu {
  position: fixed;
  top: 80px;
  left: 0;
  width: 100%;
  height: calc(100vh - 80px);
  background: var(--bg);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  z-index: 99;
  border-top: 1px solid var(--border);
}

.mobile-menu.active {
  transform: translateY(0);
  opacity: 1;
  pointer-events: all;
}

.mobile-link {
  font-size: 24px;
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--text-primary);
}

.mobile-langs {
  display: flex;
  gap: 16px;
  margin-top: auto;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.mobile-langs span {
  color: var(--text-secondary);
  font-size: 18px;
  cursor: pointer;
}

.mobile-langs span.active {
  color: var(--text-primary);
  font-weight: bold;
}

/* Hero Section */
.hero {
  padding: 180px 0 100px;
  text-align: center;
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

#hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.relative-z {
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 100px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1.1;
  margin-bottom: 24px;
  background: linear-gradient(to bottom, var(--text-primary) 30%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
}

/* Services (Bento Grid) */
.section-title {
  font-size: clamp(32px, 4vw, 48px);
  margin-bottom: 48px;
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.bento-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.bento-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(
    600px circle at var(--mouse-x, 0) var(--mouse-y, 0),
    rgba(255, 255, 255, 0.06),
    transparent 40%
  );
  z-index: 0;
  opacity: 0;
  transition: opacity 0.5s;
  pointer-events: none;
}

.bento-card:hover::before {
  opacity: 1;
}

.bento-card > * {
  position: relative;
  z-index: 1;
}

.bento-card:hover {
  border-color: rgba(139, 92, 246, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 10px 30px -10px rgba(0,0,0,0.5);
}

.card-icon {
  width: 48px;
  height: 48px;
  background: rgba(255,255,255,0.05);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 24px;
}

.card-icon svg {
  width: 24px;
  height: 24px;
}

.bento-card h3 {
  font-size: 24px;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.bento-card p {
  color: var(--text-secondary);
  font-size: 16px;
}

/* Portfolio Section */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px 32px;
}

.project-card {
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: transform 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  transform-style: preserve-3d;
}

.project-image {
  border-radius: var(--radius-lg);
  aspect-ratio: 4/3;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  padding: 24px;
}

.project-card:hover .project-image {
  transform: scale(1.02);
}

.mockup-browser {
  width: 90%;
  height: 80%;
  background: var(--mockup-bg);
  border-radius: 8px;
  border: 1px solid var(--mockup-border);
  box-shadow: 0 20px 40px rgba(0,0,0,0.15);
  display: flex;
  flex-direction: column;
}

.mockup-header {
  height: 24px;
  background: var(--mockup-header);
  border-bottom: 1px solid var(--mockup-border);
  display: flex;
  align-items: center;
  padding: 0 8px;
  gap: 6px;
}

.mockup-header span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mockup-dots);
}

.mockup-body {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 14px;
  font-family: var(--font-heading);
}

.mockup-mobile {
  width: auto;
  height: 90%;
  aspect-ratio: 9/19;
  background: var(--mockup-bg);
  border-radius: 20px;
  border: 2px solid var(--mockup-border);
  box-shadow: 0 20px 40px rgba(0,0,0,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-family: var(--font-heading);
  font-size: 14px;
}

.project-info {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tags {
  display: flex;
  gap: 8px;
}

.tag {
  font-size: 12px;
  padding: 4px 8px;
  background: rgba(255,255,255,0.05);
  border-radius: 4px;
  color: var(--text-secondary);
}

.project-info h3 {
  font-size: 24px;
  color: var(--text-primary);
}

.project-info p {
  color: var(--text-secondary);
}

/* About Section */
.about-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.about-list li {
  display: flex;
  gap: 16px;
}

.about-list .icon {
  font-size: 24px;
  width: 48px;
  height: 48px;
  background: rgba(255,255,255,0.05);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.about-visual {
  width: 100%;
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255,255,255,0.05);
}

.about-image {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 40px rgba(0,0,0,0.1);
  display: block;
}

/* Contact Section */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 64px;
}

.contact-subtitle {
  color: var(--text-secondary);
  font-size: 18px;
  margin-bottom: 40px;
}

.email-block {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.email-label {
  color: var(--text-secondary);
  font-size: 14px;
}

.email-link {
  font-size: 24px;
  font-weight: 600;
  color: var(--primary);
  font-family: var(--font-heading);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}

.form-group input, .form-group textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  transition: var(--transition);
  outline: none;
}

.form-group input:focus, .form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

/* Form Status */
.form-status {
  text-align: center;
  padding: 12px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  min-height: 0;
  transition: var(--transition);
}

.form-status:empty {
  display: none;
}

.form-success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #10b981;
}

.form-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #ef4444;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  background: var(--bg-secondary);
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-copy {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 8px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-size: 14px;
}

/* Responsive Styles */
@media (max-width: 992px) {
  .hero-title { font-size: 48px; }
  .bento-grid, .portfolio-grid, .about-container, .contact-wrapper {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .contact-wrapper { padding: 40px 24px; }
  .nav-links, .nav-actions .btn { display: none; }
  .mobile-menu-btn { display: flex; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 36px; }
  .hero-actions { flex-direction: column; }
  .footer-container { flex-direction: column; gap: 24px; text-align: center; }
}

/* Utils */
.fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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