/* ============================================================
   VNAV — Premium Dark Landing Page Styles
   Companion to Tailwind CSS CDN: handles animations,
   custom effects, and complex styles beyond utility classes.
   ============================================================ */

/* ----------------------------------------------------------
   1. Design Tokens
   ---------------------------------------------------------- */
:root {
  --bg: #0A0E14;
  --surface: #131920;
  --surface-alt: #1A2230;
  --text: #E6EDF3;
  --text-muted: #7D8590;
  --border: #21262D;
  --cyan: #00D4FF;
  --orange: #FF8C42;
  --green: #2DD881;
  --red: #FF4757;
}

/* Light mode tokens */
[data-theme="light"] {
  --bg: #F8FAFB;
  --surface: #FFFFFF;
  --surface-alt: #EEF1F5;
  --text: #1A2030;
  --text-muted: #5A6370;
  --border: #D0D7DE;
}

/* ----------------------------------------------------------
   2. Global Reset & Base
   ---------------------------------------------------------- */
html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: 'Inter', sans-serif;
}

::selection {
  background: var(--cyan);
  color: #0A0E14;
}

/* Custom scrollbar (WebKit) */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #131920;
}

::-webkit-scrollbar-thumb {
  background: var(--cyan);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: color-mix(in srgb, var(--cyan) 80%, white);
}

/* ----------------------------------------------------------
   3. Hero Grid Background Pattern
   ---------------------------------------------------------- */
.hero-grid {
  background-image:
    linear-gradient(rgba(26, 34, 48, 0.3) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26, 34, 48, 0.3) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* ----------------------------------------------------------
   4. Product Image Glow Effect
   ---------------------------------------------------------- */
.product-glow {
  position: relative;
}

.product-glow::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80%;
  height: 80%;
  background: radial-gradient(ellipse, rgba(0, 212, 255, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  z-index: 0;
  filter: blur(40px);
}

.product-glow img {
  position: relative;
  z-index: 1;
}

/* ----------------------------------------------------------
   5. Scroll Reveal Animations
   ---------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

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

/* Slide from left */
.reveal-left {
  opacity: 0;
  transform: translateX(-60px);
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

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

/* Slide from right */
.reveal-right {
  opacity: 0;
  transform: translateX(60px);
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

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

/* Scale in */
.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

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

/* Staggered children */
.reveal[data-delay="1"] { transition-delay: 0.1s; }
.reveal[data-delay="2"] { transition-delay: 0.2s; }
.reveal[data-delay="3"] { transition-delay: 0.3s; }
.reveal[data-delay="4"] { transition-delay: 0.4s; }
.reveal[data-delay="5"] { transition-delay: 0.5s; }
.reveal[data-delay="6"] { transition-delay: 0.6s; }

/* ----------------------------------------------------------
   6. Navbar Transition
   ---------------------------------------------------------- */
.navbar {
  transition: background 0.3s ease, backdrop-filter 0.3s ease, box-shadow 0.3s ease;
  background: transparent;
}

.navbar.scrolled {
  background: rgba(10, 14, 20, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(33, 38, 45, 0.5);
}

/* ----------------------------------------------------------
   7. CTA Button Glow & Hover Effects
   ---------------------------------------------------------- */
.btn-primary {
  background: var(--cyan);
  color: #0A0E14;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn-primary:hover {
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.4), 0 0 60px rgba(0, 212, 255, 0.1);
  transform: translateY(-2px);
}

.btn-primary::after {
  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 0.5s ease;
}

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

.btn-secondary {
  border: 1px solid var(--border);
  color: var(--text);
  transition: all 0.3s ease;
}

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

/* ----------------------------------------------------------
   8. Feature / Problem Cards
   ---------------------------------------------------------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: all 0.3s ease;
}

.card:hover {
  border-color: rgba(0, 212, 255, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* Problem cards with colored left border */
.problem-card {
  border-left: 3px solid var(--red);
}

.problem-card.orange {
  border-left-color: var(--orange);
}

/* ----------------------------------------------------------
   9. Timeline / Steps Styling
   ---------------------------------------------------------- */
.timeline {
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--green));
  opacity: 0.3;
}

.step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), var(--green));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 18px;
  color: #0A0E14;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

/* ----------------------------------------------------------
   10. Comparison Table
   ---------------------------------------------------------- */
.compare-table {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.compare-table th {
  background: var(--surface);
  padding: 16px 20px;
  font-weight: 600;
  font-size: 11px;
  text-align: left;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.compare-table th.highlight {
  background: rgba(0, 212, 255, 0.1);
  color: var(--cyan);
}

.compare-table td {
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  font-size: 14px;
  color: var(--text);
}

.compare-table tr:nth-child(even) td {
  background: rgba(19, 25, 32, 0.5);
}

.compare-table tr:hover td {
  background: rgba(0, 212, 255, 0.03);
}

/* ----------------------------------------------------------
   11. Form Input Styling
   ---------------------------------------------------------- */
.form-input {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 16px;
  color: var(--text);
  font-size: 15px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  width: 100%;
}

.form-input:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-input::placeholder {
  color: #3D4450;
}

/* ----------------------------------------------------------
   12. Spec List Styling
   ---------------------------------------------------------- */
.spec-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.spec-row:last-child {
  border-bottom: none;
}

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

.spec-value {
  color: var(--text);
  font-weight: 600;
  font-size: 14px;
}

/* ----------------------------------------------------------
   13. Animated Gradient Border (Waitlist Card)
   ---------------------------------------------------------- */
.gradient-border {
  position: relative;
  background: var(--surface);
  border-radius: 24px;
  padding: 48px;
}

.gradient-border::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 25px;
  background: linear-gradient(135deg, var(--cyan), var(--green), var(--cyan));
  z-index: -1;
  background-size: 200% 200%;
  animation: gradient-rotate 4s ease infinite;
}

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

/* ----------------------------------------------------------
   14. Product Image Hover
   ---------------------------------------------------------- */
.product-img {
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  border-radius: 16px;
  will-change: transform;
}

.product-img:hover {
  transform: scale(1.05);
}

/* ----------------------------------------------------------
   15. Mobile Menu
   ---------------------------------------------------------- */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10, 14, 20, 0.95);
  backdrop-filter: blur(20px);
  z-index: 40;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
}

.mobile-menu.active {
  display: flex;
}

.mobile-menu a {
  font-size: 24px;
  font-weight: 600;
  color: var(--text);
  transition: color 0.3s;
}

.mobile-menu a:hover {
  color: var(--cyan);
}

/* ----------------------------------------------------------
   16. Floating Particles / Subtle Background Animation
   ---------------------------------------------------------- */
@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg);   opacity: 0.3; }
  50%      { transform: translateY(-20px) rotate(180deg); opacity: 0.6; }
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--cyan);
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
  opacity: 0.3;
  will-change: transform, opacity;
}

/* ----------------------------------------------------------
   17. Counter Animation
   ---------------------------------------------------------- */
@keyframes count-pulse {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.05); }
  100% { transform: scale(1); }
}

.counter.animated {
  animation: count-pulse 0.5s ease-out;
}

/* ----------------------------------------------------------
   18. Responsive Overrides
   ---------------------------------------------------------- */
@media (max-width: 768px) {
  .hero-grid {
    background-size: 40px 40px;
  }

  .timeline::before {
    left: 20px;
  }

  .step-number {
    width: 40px;
    height: 40px;
    font-size: 16px;
  }

  .gradient-border {
    padding: 32px 24px;
  }
}

/* ----------------------------------------------------------
   19. Feature Carousel (Mobile)
   ---------------------------------------------------------- */
.feature-carousel {
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.feature-carousel::-webkit-scrollbar {
  display: none;
}

/* ----------------------------------------------------------
   20. Theme Toggle Button
   ---------------------------------------------------------- */
.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  font-size: 18px;
  line-height: 1;
}

.theme-toggle:hover {
  border-color: var(--cyan);
  transform: scale(1.1);
}

/* ----------------------------------------------------------
   20. Light Mode Overrides
   ---------------------------------------------------------- */
[data-theme="light"] body {
  background-color: var(--bg);
  color: var(--text);
}

[data-theme="light"] .navbar.scrolled {
  background: rgba(248, 250, 251, 0.9);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .hero-grid {
  background-image:
    linear-gradient(rgba(0, 0, 0, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.04) 1px, transparent 1px);
}

[data-theme="light"] .card:hover {
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .mobile-menu {
  background: rgba(248, 250, 251, 0.98);
}

[data-theme="light"] ::-webkit-scrollbar-track {
  background: #EEF1F5;
}

[data-theme="light"] ::selection {
  color: #fff;
}

/* Light mode — Tailwind overrides for hardcoded colors */
[data-theme="light"] .text-white {
  color: #1A2030 !important;
}

[data-theme="light"] .text-gray-400 {
  color: #5A6370 !important;
}

[data-theme="light"] .text-gray-500 {
  color: #6B7280 !important;
}

[data-theme="light"] .text-gray-600 {
  color: #4B5563 !important;
}

[data-theme="light"] .bg-\[\#0D1117\] {
  background-color: #EEF1F5 !important;
}

[data-theme="light"] .border-vnav-border {
  border-color: #D0D7DE !important;
}

[data-theme="light"] .bg-vnav-surface {
  background-color: #FFFFFF !important;
}

[data-theme="light"] .text-vnav-muted {
  color: #5A6370 !important;
}

[data-theme="light"] .text-vnav-text {
  color: #1A2030 !important;
}

[data-theme="light"] .bg-vnav-bg {
  background-color: #F8FAFB !important;
}

[data-theme="light"] .logo-text {
  color: #1A2030 !important;
}

[data-theme="light"] .hamburger-line {
  background: #1A2030 !important;
}

/* Light mode — Comparison table */
[data-theme="light"] .compare-table {
  border-color: #D0D7DE;
}

[data-theme="light"] .compare-table th {
  background: #EEF1F5;
  color: #5A6370;
}

[data-theme="light"] .compare-table th.highlight {
  background: rgba(0, 212, 255, 0.08);
  color: var(--cyan);
}

[data-theme="light"] .compare-table td {
  border-top-color: #E5E7EB;
  color: #1A2030;
}

[data-theme="light"] .compare-table tr:nth-child(even) td {
  background: rgba(238, 241, 245, 0.5);
}

[data-theme="light"] .compare-table tr:hover td {
  background: rgba(0, 212, 255, 0.05);
}

/* Light mode — Spec rows */
[data-theme="light"] .spec-row {
  border-bottom-color: #E5E7EB !important;
}

[data-theme="light"] .spec-label {
  color: #5A6370 !important;
}

[data-theme="light"] .spec-value {
  color: #1A2030 !important;
}

/* Light mode — Problem cards */
[data-theme="light"] .card {
  background: #FFFFFF;
  border-color: #D0D7DE;
}

[data-theme="light"] .card:hover {
  border-color: rgba(0, 212, 255, 0.4);
}

/* Light mode — Footer */
[data-theme="light"] footer {
  border-top-color: #D0D7DE;
}

/* Light mode — Product cards text */
[data-theme="light"] .text-gray-300 {
  color: #374151 !important;
}

[data-theme="light"] .text-vnav-cyan {
  color: #0098B3 !important;
}

[data-theme="light"] .text-vnav-green {
  color: #1A9960 !important;
}

[data-theme="light"] .bg-vnav-cyan {
  background-color: #0098B3 !important;
}

[data-theme="light"] .border-vnav-cyan {
  border-color: #0098B3 !important;
}

/* Light mode — Radio toggle buttons */
[data-theme="light"] .peer:checked ~ div {
  border-color: #0098B3 !important;
  color: #0098B3 !important;
  background: rgba(0, 152, 179, 0.08);
}

/* Light mode — Form placeholder */
[data-theme="light"] .form-input::placeholder {
  color: #9CA3AF;
}