/* ============================================
   NeuraCryption Design System
   Ultra-Premium Futuristic Theme
   ============================================ */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700&display=swap');

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Colors */
  --color-bg: #F7F6F2;
  --color-bg-alt: #F0EDE6;
  --color-surface: #FFFFFF;
  --color-surface-glass: rgba(255, 255, 255, 0.72);
  --color-text-primary: #1A1A1A;
  --color-text-secondary: #4A4A4A;
  --color-text-muted: #8A8580;
  --color-accent: #2D2926;
  --color-accent-warm: #C4A882;
  --color-accent-highlight: #B8956A;
  --color-accent-deep: #8B7355;
  --color-border: rgba(26, 26, 26, 0.08);
  --color-border-strong: rgba(26, 26, 26, 0.15);
  --color-shadow: rgba(26, 26, 26, 0.06);
  --color-shadow-strong: rgba(26, 26, 26, 0.12);
  --color-overlay: rgba(26, 26, 26, 0.6);
  
  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Outfit', 'Inter', sans-serif;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;
  
  /* Layout */
  --max-width: 1200px;
  --max-width-narrow: 900px;
  --max-width-wide: 1400px;
  --nav-height: 72px;
  
  /* Borders */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px var(--color-shadow);
  --shadow-md: 0 4px 20px var(--color-shadow), 0 1px 4px var(--color-shadow);
  --shadow-lg: 0 8px 40px var(--color-shadow-strong), 0 2px 8px var(--color-shadow);
  --shadow-xl: 0 16px 64px var(--color-shadow-strong), 0 4px 16px var(--color-shadow);
  --shadow-glow: 0 0 40px rgba(196, 168, 130, 0.15);
  
  /* Transitions */
  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.2s var(--ease-out);
  --transition-base: 0.4s var(--ease-out);
  --transition-slow: 0.6s var(--ease-out);
  
  /* 3D */
  --perspective: 1200px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  line-height: 1.7;
  font-weight: 400;
  overflow-x: hidden;
}

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

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

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

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  line-height: 1.2;
  color: var(--color-text-primary);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 600;
  letter-spacing: -0.02em;
}

h3 {
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  font-weight: 600;
  letter-spacing: -0.01em;
}

h4 {
  font-size: 1.15rem;
  font-weight: 600;
}

p {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.text-muted {
  color: var(--color-text-muted);
}

.text-accent {
  color: var(--color-accent-warm);
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-warm) 50%, var(--color-accent-highlight) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.container-narrow {
  max-width: var(--max-width-narrow);
}

.container-wide {
  max-width: var(--max-width-wide);
}

.section {
  padding: var(--space-5xl) 0;
  position: relative;
}

.section-alt {
  background-color: var(--color-bg-alt);
}

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: var(--transition-base);
}

.nav::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--color-surface-glass);
  backdrop-filter: blur(24px) saturate(1.2);
  -webkit-backdrop-filter: blur(24px) saturate(1.2);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition-base);
}

.nav.scrolled::before {
  background: rgba(247, 246, 242, 0.92);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  position: relative;
  z-index: 1;
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  transition: var(--transition-fast);
}

.nav-logo:hover {
  opacity: 0.8;
}

.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-warm) 100%);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 700;
}

.logo-text {
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-accent-deep) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
}

.nav-links a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  letter-spacing: 0.01em;
  transition: var(--transition-fast);
  position: relative;
}

.nav-links a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--color-accent-warm);
  transition: width 0.3s var(--ease-out);
}

.nav-links a:not(.nav-cta):hover {
  color: var(--color-text-primary);
}

.nav-links a:not(.nav-cta):hover::after {
  width: 100%;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 0.6rem 1.5rem;
  background: var(--color-accent);
  color: #F7F6F2 !important;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.88rem;
  letter-spacing: 0.02em;
  transition: var(--transition-fast);
  box-shadow: 0 2px 12px rgba(45, 41, 38, 0.2);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(45, 41, 38, 0.3);
  background: var(--color-accent-deep);
}

/* Nav Dropdown */
.nav-dropdown {
  position: relative;
  display: inline-block;
}

.nav-dropdown::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  height: 25px;
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px) perspective(400px) rotateX(-10deg);
  background: var(--color-surface-glass);
  backdrop-filter: blur(24px) saturate(1.2);
  -webkit-backdrop-filter: blur(24px) saturate(1.2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: var(--space-sm) 0;
  min-width: 180px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-base);
  z-index: 1000;
  pointer-events: none;
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(15px) perspective(400px) rotateX(0);
  pointer-events: auto;
}

.nav-dropdown-menu a {
  display: flex;
  align-items: center;
  padding: 0.75rem var(--space-md);
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition-fast);
}

.nav-dropdown-menu a::after {
  display: none !important;
}

.nav-dropdown-menu a:hover {
  background: rgba(196, 168, 130, 0.08);
  color: var(--color-accent-highlight);
}

/* Auth Buttons */
.nav-btn-login {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-primary);
  text-decoration: none;
  transition: var(--transition-fast);
}

.nav-btn-login:hover {
  color: var(--color-accent-highlight);
}

/* Mobile Nav Toggle */
.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  z-index: 1001;
}

.nav-mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: var(--transition-fast);
}

.nav-mobile-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translateY(5px) translateX(5px);
}

.nav-mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-mobile-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translateY(-5px) translateX(5px);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.85rem 2rem;
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  transition: var(--transition-fast);
  cursor: pointer;
  border: none;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg);
  box-shadow: 0 4px 16px rgba(45, 41, 38, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(45, 41, 38, 0.35);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text-primary);
  border: 1.5px solid var(--color-border-strong);
}

.btn-secondary:hover {
  background: var(--color-surface);
  border-color: var(--color-accent-warm);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  padding: 0.6rem 1.2rem;
}

.btn-ghost:hover {
  color: var(--color-text-primary);
  background: rgba(26, 26, 26, 0.04);
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1.05rem;
}

.btn-icon {
  font-size: 1.1em;
  transition: transform 0.2s var(--ease-out);
}

.btn:hover .btn-icon {
  transform: translateX(3px);
}

/* ---------- Cards ---------- */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  border: 1px solid var(--color-border);
  transition: var(--transition-base);
  position: relative;
}

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

.card-glass {
  background: var(--color-surface-glass);
  backdrop-filter: blur(20px) saturate(1.1);
  -webkit-backdrop-filter: blur(20px) saturate(1.1);
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.card-3d {
  perspective: var(--perspective);
  transform-style: preserve-3d;
}

.card-3d:hover {
  transform: translateY(-6px) rotateX(2deg) rotateY(-1deg);
}

/* ---------- Badges ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.badge-primary {
  background: rgba(45, 41, 38, 0.06);
  color: var(--color-accent);
}

.badge-accent {
  background: linear-gradient(135deg, rgba(196, 168, 130, 0.15) 0%, rgba(184, 149, 106, 0.15) 100%);
  color: var(--color-accent-deep);
}

/* ---------- Scroll Animations ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

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

.fade-in-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

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

.fade-in-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

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

.fade-in-scale {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

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

/* Stagger children */
.stagger-children > * {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out);
}

.stagger-children.visible > *:nth-child(1) { transition-delay: 0s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.1s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.2s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.3s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(5) { transition-delay: 0.4s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(6) { transition-delay: 0.5s; opacity: 1; transform: translateY(0); }

/* ---------- 3D Floating Background Elements ---------- */
.bg-orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(80px);
  opacity: 0.4;
  z-index: 0;
}

.bg-orb-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(196, 168, 130, 0.3) 0%, transparent 70%);
  top: -100px;
  right: -100px;
  animation: floatOrb1 20s ease-in-out infinite alternate;
}

.bg-orb-2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(184, 149, 106, 0.2) 0%, transparent 70%);
  bottom: -50px;
  left: -100px;
  animation: floatOrb2 25s ease-in-out infinite alternate;
}

.bg-orb-3 {
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(139, 115, 85, 0.15) 0%, transparent 70%);
  top: 40%;
  left: 50%;
  animation: floatOrb3 18s ease-in-out infinite alternate;
}

@keyframes floatOrb1 {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-60px, 40px) scale(1.1); }
  100% { transform: translate(30px, -30px) scale(0.95); }
}

@keyframes floatOrb2 {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(50px, -30px) scale(1.05); }
  100% { transform: translate(-40px, 20px) scale(1.1); }
}

@keyframes floatOrb3 {
  0% { transform: translate(-50%, 0) scale(1); }
  50% { transform: translate(-45%, -20px) scale(1.08); }
  100% { transform: translate(-55%, 15px) scale(0.97); }
}

/* ---------- Grid Overlay (subtle) ---------- */
.grid-overlay {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(26, 26, 26, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26, 26, 26, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--color-accent);
  color: var(--color-bg);
  padding: var(--space-4xl) 0 var(--space-xl);
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent-warm), transparent);
}

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

.footer-brand p {
  color: rgba(247, 246, 242, 0.6);
  font-size: 0.95rem;
  margin-top: var(--space-md);
  max-width: 320px;
}

.footer-heading {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(247, 246, 242, 0.5);
  margin-bottom: var(--space-lg);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-links a {
  color: rgba(247, 246, 242, 0.7);
  font-size: 0.92rem;
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-accent-warm);
}

.footer-bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(247, 246, 242, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: rgba(247, 246, 242, 0.4);
}

/* ---------- Stats Counter ---------- */
.stat-number {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.03em;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  font-weight: 500;
  margin-top: var(--space-xs);
}

/* ---------- Dividers ---------- */
.divider {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent-warm), var(--color-accent-highlight));
  border-radius: var(--radius-full);
  margin: var(--space-lg) 0;
}

.divider-center {
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Ticker / Marquee ---------- */
.marquee-container {
  overflow: hidden;
  white-space: nowrap;
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.marquee-track {
  display: inline-flex;
  animation: marquee 40s linear infinite;
}

.marquee-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-md);
  padding: 0 var(--space-2xl);
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

.marquee-item .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent-warm);
}

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

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
  }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }
  
  .section {
    padding: var(--space-3xl) 0;
  }
  
  .container {
    padding: 0 var(--space-lg);
  }
  
  .nav-links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-2xl);
    z-index: 999;
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .nav-links a {
    font-size: 1.2rem;
  }
  
  .nav-mobile-toggle {
    display: flex;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
}

/* ---------- Utility Classes ---------- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mx-auto { margin-left: auto; margin-right: auto; }
.mt-1 { margin-top: var(--space-md); }
.mt-2 { margin-top: var(--space-xl); }
.mt-3 { margin-top: var(--space-2xl); }
.mt-4 { margin-top: var(--space-3xl); }
.mb-1 { margin-top: var(--space-md); }
.mb-2 { margin-bottom: var(--space-xl); }
.mb-3 { margin-bottom: var(--space-2xl); }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--space-md); }
.gap-2 { gap: var(--space-xl); }
.gap-3 { gap: var(--space-2xl); }
.relative { position: relative; }
.overflow-hidden { overflow: hidden; }
.w-full { width: 100%; }

/* ---------- Selection ---------- */
::selection {
  background: rgba(196, 168, 130, 0.3);
  color: var(--color-text-primary);
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar {
  width: 6px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--color-accent-warm);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent-deep);
}

/* ---------- Page transition ---------- */
.page-content {
  padding-top: var(--nav-height);
  min-height: 100vh;
}