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

:root {
  --bg: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: #1a1a1a;
  --text: #e5e5e5;
  --text-secondary: #a0a0a0;
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --accent-glow: rgba(99, 102, 241, 0.3);
  --border: #222222;
  --gradient-1: linear-gradient(135deg, #6366f1, #8b5cf6, #a855f7);
  --radius: 12px;
  --radius-sm: 8px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ========== Typography ========== */
h1 { font-size: 3.5rem; font-weight: 800; line-height: 1.1; letter-spacing: -0.03em; }
h2 { font-size: 2.5rem; font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; }
h3 { font-size: 1.75rem; font-weight: 600; line-height: 1.3; }
h4 { font-size: 1.25rem; font-weight: 600; line-height: 1.4; }
h5 { font-size: 1.1rem; font-weight: 600; line-height: 1.4; }
h6 { font-size: 1rem; font-weight: 600; line-height: 1.4; }
p { font-size: 1.05rem; color: var(--text-secondary); margin-bottom: 1rem; }
a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-hover); }

.text-gradient, .gradient-text {
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-gradient {
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
  font-size: 1.5rem;
}

/* ========== Container ========== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

/* ========== Navigation ========== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-logo { text-decoration: none; }
.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition);
  position: relative;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: var(--gradient-1);
  border-radius: 1px;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ========== Main Content ========== */
.main-content { padding-top: 64px; min-height: 100vh; }

/* ========== Sections ========== */
.section { padding: 4rem 0; }
.section-dark { background: var(--bg-secondary); }
.section-header { text-align: center; margin-bottom: 2.5rem; }
.section-header h2 { margin-bottom: 0.75rem; }
.section-header p { max-width: 600px; margin: 0 auto; }

/* ========== Hero ========== */
.hero {
  position: relative;
  padding: 5rem 0 3rem;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(ellipse at 30% 20%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
              radial-gradient(ellipse at 70% 80%, rgba(139, 92, 246, 0.06) 0%, transparent 50%);
  animation: gradient 15s ease infinite;
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

/* ========== Cards ========== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: all var(--transition);
}
.card:hover {
  border-color: rgba(99, 102, 241, 0.3);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}
.glass-card {
  background: rgba(26, 26, 26, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius);
  padding: 2rem;
  transition: all var(--transition);
}
.glass-card:hover {
  border-color: rgba(99, 102, 241, 0.2);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  font-family: var(--font);
  text-decoration: none;
}
.btn-primary {
  background: var(--gradient-1);
  color: #fff;
  box-shadow: 0 4px 16px var(--accent-glow);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px var(--accent-glow);
  color: #fff;
}
.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ========== Grid ========== */
.grid { display: grid; gap: 1.5rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ========== Forms ========== */
.form-group { margin-bottom: 1.5rem; }
.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
}
input[type="text"],
input[type="email"],
input[type="password"],
input[type="url"],
textarea,
select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.95rem;
  font-family: var(--font);
  transition: border-color var(--transition);
  outline: none;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
textarea { resize: vertical; min-height: 120px; }
input[type="file"] {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.9rem;
  cursor: pointer;
}
input[type="file"]:hover { border-color: var(--accent); }

/* ========== Animations ========== */
@keyframes gradient {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  25% { transform: translate(5%, -5%) rotate(1deg); }
  50% { transform: translate(-3%, 8%) rotate(-1deg); }
  75% { transform: translate(7%, 3%) rotate(0.5deg); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.animate-fade { animation: fadeIn 0.6s ease; }
.animate-slide { animation: slideUp 0.6s ease; }

/* ========== Footer ========== */
.footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0 1.5rem;
  background: var(--bg);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}
.footer-col { display: flex; flex-direction: column; gap: 0.75rem; }
.footer-col h4 { color: var(--text); font-size: 0.9rem; margin-bottom: 0.5rem; }
.footer-col a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--text); }
.footer-tagline { color: var(--text-secondary); font-size: 0.9rem; }
.footer-logo { font-size: 2rem; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 2rem;
  text-align: center;
}
.footer-bottom p { color: var(--text-secondary); font-size: 0.85rem; }

/* ========== Cookie Consent ========== */
.cookie-consent {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 9999;
  padding: 1rem 1.5rem;
  background: rgba(20, 20, 20, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid rgba(99, 102, 241, 0.2);
  transform: translateY(100%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.cookie-consent.visible { transform: translateY(0); }
.cookie-consent-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.cookie-consent-text {
  margin: 0;
  font-size: 0.9rem;
  color: #a0a0a0;
  flex: 1;
  min-width: 200px;
}
.cookie-consent-text a { color: #6366f1; text-decoration: underline; }
.cookie-consent-actions { display: flex; gap: 0.75rem; flex-shrink: 0; }
.cookie-btn {
  padding: 0.5rem 1.25rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}
.cookie-btn-decline {
  background: transparent;
  color: #e5e5e5;
  border: 1px solid #333;
}
.cookie-btn-accept {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #fff;
  border: none;
  box-shadow: 0 2px 12px rgba(99, 102, 241, 0.3);
}

/* ========== Responsive ========== */
@media (max-width: 1280px) {
  h1 { font-size: 3rem; }
}
@media (max-width: 1024px) {
  h1 { font-size: 2.5rem; }
  h2 { font-size: 2rem; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  .section { padding: 3rem 0; }
  .hero { padding: 4rem 0 3rem; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }

  .hamburger { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 64px; left: 0; right: 0;
    flex-direction: column;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    padding: 1.5rem;
    gap: 1rem;
    border-bottom: 1px solid var(--border);
  }
  .nav-links.open { display: flex; }
}

/* ========== Utilities ========== */
.text-center { text-align: center; }
.mt-2 { margin-top: 1rem; }
.mt-4 { margin-top: 2rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 2rem; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 1rem; }
.w-full { width: 100%; }

/* ========== 404 Page ========== */
.not-found { min-height: 60vh; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; padding: 140px 24px 80px; }
.not-found h1 { font-size: 4rem; font-weight: 800; margin-bottom: 16px; }
.not-found p { color: var(--text-secondary); font-size: 1.1rem; margin-bottom: 32px; }