/* ============================================
   Nevora Lab — Landing Page Styles
   Modern, Zen-inspired dark theme
   ============================================ */

/* CSS Custom Properties */
:root {
  --color-bg: #020617;
  --color-surface: #0f172a;
  --color-surface-elevated: #1e293b;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-text-primary: #f8fafc;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;
  --color-accent: #6366f1;
  --color-accent-light: #818cf8;
  --color-accent-dark: #4f46e5;
  --color-violet: #8b5cf6;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-jp: 'Noto Serif JP', serif;
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.15);
}

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

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

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

/* Selection */
::selection {
  background: rgba(99, 102, 241, 0.3);
  color: #fff;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
.font-jp {
  font-family: var(--font-jp);
}

/* ============================================
   NAVIGATION
   ============================================ */
#navbar {
  background: transparent;
}

#navbar.scrolled {
  background: rgba(2, 6, 23, 0.8);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-violet));
  border-radius: 1px;
  transition: all 0.3s ease;
  transform: translateX(-50%);
}

.nav-link:hover::after {
  width: 20px;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn-primary {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-violet) 100%);
  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, 0.15), transparent);
  transition: left 0.5s ease;
}

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

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

/* ============================================
   HERO CANVAS
   ============================================ */
#hero-canvas-container {
  position: absolute;
  inset: 0;
}

#hero-canvas {
  width: 100%;
  height: 100%;
}

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

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

@keyframes floatDelayed {
  0%, 100% {
    transform: translateY(0) scale(1);
  }
  50% {
    transform: translateY(-15px) scale(0.95);
  }
}

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

@keyframes scrollDot {
  0% {
    transform: translateY(0);
    opacity: 1;
  }
  100% {
    transform: translateY(12px);
    opacity: 0;
  }
}

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

.animate-fade-in-up {
  opacity: 0;
  animation: fadeInUp 0.8s ease forwards;
}

.animate-float {
  animation: float 8s ease-in-out infinite;
}

.animate-float-delayed {
  animation: floatDelayed 10s ease-in-out infinite;
  animation-delay: 2s;
}

.animate-gradient {
  background-size: 200% 200%;
  animation: gradientShift 6s ease infinite;
}

.animate-scroll-dot {
  animation: scrollDot 1.5s ease-in-out infinite;
}

/* ============================================
   SECTION REVEAL
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   MOBILE MENU
   ============================================ */
#mobile-menu {
  transition: all 0.3s ease;
}

#mobile-menu:not(.hidden) {
  animation: fadeInUp 0.3s ease;
}

/* ============================================
   PRODUCT CARDS
   ============================================ */
.product-card {
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.product-card:hover {
  transform: translateY(-4px);
}

/* ============================================
   CODE BLOCK STYLING
   ============================================ */
.font-mono {
  font-family: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, monospace;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  .animate-float,
  .animate-float-delayed {
    display: none;
  }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus styles */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.glass {
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-accent-light), var(--color-violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}