/* ============================================
   Headcam.app — Styles
   ============================================ */

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

:root {
  --bg-deep: #06090f;
  --bg-card: #0d1320;
  --bg-surface: #151d30;
  --accent-blue: #6366f1;
  --accent-cyan: #34d399;
  --accent-violet: #a78bfa;
  --accent-warm: #fb923c;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --nav-height: 64px;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Grain texture overlay --- */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

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

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

ul {
  list-style: none;
}

/* --- Utilities --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

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

/* --- Typography: Space Grotesk for headlines --- */
.hero-headline,
.section-title,
.download-headline,
.feature-title,
.step-title {
  font-family: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  letter-spacing: -0.02em;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 56px;
}

.section-title--left {
  text-align: left;
}

@media (max-width: 600px) {
  .section-title--left {
    text-align: center;
  }
}

/* --- Scroll Progress Bar --- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-violet));
  z-index: 1001;
  pointer-events: none;
  will-change: width;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  font-weight: 600;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  position: relative;
  padding: 14px 32px;
  font-size: 1rem;
  color: #fff;
  background: var(--accent-blue);
  box-shadow: 0 4px 24px rgba(99, 102, 241, 0.3);
}

.btn-primary::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 15px;
  border: 2px solid var(--accent-blue);
  opacity: 0;
  transition: opacity 0.3s, inset 0.3s;
}

.btn-primary:hover {
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.45);
}

.btn-primary:hover::after {
  opacity: 0.5;
  inset: -6px;
}

.btn-lg {
  padding: 18px 40px;
  font-size: 1.125rem;
}

/* --- Scroll Reveal (varied directions) --- */
.reveal {
  opacity: 0;
  transition:
    opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: var(--reveal-delay, 0ms);
}

/* Default: fade up */
.reveal {
  transform: translateY(24px);
}

.reveal[data-reveal="slide-right"] {
  transform: translateX(-32px);
}

.reveal[data-reveal="slide-left"] {
  transform: translateX(32px);
}

.reveal[data-reveal="scale"] {
  transform: scale(0.92);
}

.reveal[data-reveal="fade-up"] {
  transform: translateY(24px);
}

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

/* ============================================
   Navigation
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  transition: background 0.3s, border-color 0.3s;
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(6, 9, 15, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: rgba(255, 255, 255, 0.06);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-icon {
  border-radius: 8px;
}

.nav-wordmark {
  font-size: 1.25rem;
  font-weight: 700;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 4px;
}

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

.nav-links a {
  position: relative;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s;
}

/* Animated underline on hover */
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 1.5px;
  background: var(--accent-blue);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.nav-links a:hover::after {
  transform: scaleX(1);
}

/* --- Mobile Nav --- */
@media (max-width: 640px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(6, 9, 15, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .nav-links.open {
    max-height: 240px;
  }

  .nav-links li a {
    display: block;
    padding: 16px 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.04);
  }

  .nav-links a::after {
    display: none;
  }
}

/* Hamburger animation */
.nav-toggle[aria-expanded="true"] .hamburger-top {
  transform: translate(0, 6px) rotate(45deg);
  transform-origin: center;
  transition: transform 0.3s;
}

.nav-toggle[aria-expanded="true"] .hamburger-mid {
  opacity: 0;
  transition: opacity 0.2s;
}

.nav-toggle[aria-expanded="true"] .hamburger-bot {
  transform: translate(0, -6px) rotate(-45deg);
  transform-origin: center;
  transition: transform 0.3s;
}

.hamburger-top,
.hamburger-mid,
.hamburger-bot {
  transition: transform 0.3s, opacity 0.2s;
}

/* ============================================
   Hero
   ============================================ */
.hero {
  position: relative;
  padding: calc(var(--nav-height) + 80px) 0 80px;
  overflow: hidden;
  text-align: center;
}

/* --- Animated gradient mesh background --- */
.hero-glow {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.18;
  will-change: transform;
}

.hero-blob--blue {
  width: 500px;
  height: 500px;
  background: var(--accent-blue);
  top: -10%;
  left: 15%;
  animation: blob-drift-1 18s ease-in-out infinite;
}

.hero-blob--cyan {
  width: 400px;
  height: 400px;
  background: var(--accent-cyan);
  top: 10%;
  right: 10%;
  animation: blob-drift-2 22s ease-in-out infinite;
}

.hero-blob--purple {
  width: 350px;
  height: 350px;
  background: var(--accent-violet);
  bottom: -5%;
  left: 40%;
  animation: blob-drift-3 20s ease-in-out infinite;
}

@keyframes blob-drift-1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(60px, 40px) scale(1.08); }
  66% { transform: translate(-30px, 60px) scale(0.95); }
}

@keyframes blob-drift-2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-50px, 30px) scale(0.92); }
  66% { transform: translate(40px, -40px) scale(1.05); }
}

@keyframes blob-drift-3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -50px) scale(1.1); }
  66% { transform: translate(-60px, 20px) scale(0.93); }
}

@media (max-width: 600px) {
  .hero-blob--blue { width: 300px; height: 300px; }
  .hero-blob--cyan { width: 240px; height: 240px; }
  .hero-blob--purple { width: 210px; height: 210px; }
}

.hero-content {
  position: relative;
}

.hero-headline {
  font-size: clamp(2.25rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 20px;
}

/* --- Hero entrance animations --- */
/* Initial hidden states only when JS is loaded */
.js-loaded .hero-entrance {
  opacity: 0;
}

.js-loaded .hero-entrance--headline {
  clip-path: inset(0 100% 0 0);
  animation: hero-wipe 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.15s forwards;
}

.js-loaded .hero-entrance--sub {
  transform: translateY(16px);
  animation: hero-fade-in 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.6s forwards;
}

.js-loaded .hero-entrance--btn {
  transform: translateY(16px);
  animation: hero-fade-in 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.9s forwards;
}

.js-loaded .hero-entrance--icon {
  transform: translateY(20px) scale(0.95);
  animation: hero-icon-in 0.7s cubic-bezier(0.16, 1, 0.3, 1) 1.1s forwards;
}

@keyframes hero-wipe {
  to {
    clip-path: inset(0 0% 0 0);
    opacity: 1;
  }
}

@keyframes hero-fade-in {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes hero-icon-in {
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* --- Rotating text --- */
.rotating-text {
  display: inline-block;
  position: relative;
  transition: opacity 0.35s ease, transform 0.35s ease;
}

.rotating-text.fade-out {
  opacity: 0;
  transform: translateY(8px);
}

.rotating-text.fade-in {
  opacity: 0;
  transform: translateY(-8px);
}

.hero-sub {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.6;
}

.hero-icon {
  margin: 48px auto 0;
  width: 180px;
  height: 180px;
}

.hero-icon img {
  border-radius: 40px;
  box-shadow: 0 16px 64px rgba(99, 102, 241, 0.2);
}

/* ============================================
   Stats Bar
   ============================================ */
.stats {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: var(--bg-card);
  padding: 40px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  text-align: center;
}

.stat {
  position: relative;
  padding: 0 16px;
}

/* Vertical dividers between stats */
.stat + .stat::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 40px;
  background: rgba(255, 255, 255, 0.08);
}

.stat-value {
  display: block;
  font-family: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--stat-color, #fff);
}

.stat:nth-child(1) { --stat-color: var(--accent-blue); }
.stat:nth-child(2) { --stat-color: var(--accent-cyan); }
.stat:nth-child(3) { --stat-color: var(--accent-warm); }
.stat:nth-child(4) { --stat-color: var(--accent-violet); }

.stat-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px 0;
  }

  .stat:nth-child(odd)::before {
    display: none;
  }
}

/* ============================================
   Features Grid — Bento Layout
   ============================================ */
.features {
  padding: 112px 0 80px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  padding: 32px;
  transition: border-color 0.3s, transform 0.3s;
  overflow: hidden;
}

/* Mouse glow pseudo-element */
.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0;
  transition: opacity 0.3s;
  background: radial-gradient(
    400px circle at var(--glow-x, 50%) var(--glow-y, 50%),
    rgba(99, 102, 241, 0.08),
    transparent 60%
  );
  pointer-events: none;
}

@media (hover: hover) {
  .feature-card:hover::before {
    opacity: 1;
  }
}

.feature-card:hover {
  border-color: rgba(99, 102, 241, 0.35);
}

/* Disable translateY hover — tilt handles hover on desktop */
@media (hover: hover) {
  .feature-card {
    transition: border-color 0.3s, transform 0.15s ease-out;
  }
}

.feature-icon {
  position: relative;
  margin-bottom: 16px;
}

.feature-title {
  position: relative;
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-desc {
  position: relative;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

@media (max-width: 900px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   How It Works
   ============================================ */
.how-it-works {
  padding: 80px 0 104px;
  background: var(--bg-card);
}

.steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 24px;
}

.step {
  flex: 1;
  max-width: 220px;
  text-align: center;
}

/* Step numbers: each gets a distinct solid color */
.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.step-number--blue { background: var(--accent-blue); }
.step-number--cyan { background: var(--accent-cyan); }
.step-number--violet { background: var(--accent-violet); }
.step-number--warm { background: var(--accent-warm); }

.step-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Step arrows: muted color */
.step-arrow {
  display: flex;
  align-items: center;
  padding-top: 12px;
  color: var(--text-secondary);
}

@media (max-width: 700px) {
  .steps {
    flex-direction: column;
    align-items: center;
  }

  .step-arrow {
    transform: rotate(90deg);
    padding-top: 0;
  }
}

/* ============================================
   Compatibility
   ============================================ */
.compatibility {
  padding: 104px 0 88px;
}

.compat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.compat-section {
  text-align: center;
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  padding: 32px 24px;
  border-top: 2px solid var(--compat-accent, var(--accent-blue));
}

.compat-section:nth-child(1) { --compat-accent: var(--accent-blue); }
.compat-section:nth-child(2) { --compat-accent: var(--accent-violet); }
.compat-section:nth-child(3) { --compat-accent: var(--accent-cyan); }

.compat-heading {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--compat-accent);
  margin-bottom: 20px;
}

.compat-logos {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.compat-logo {
  padding: 10px 20px;
  background: var(--bg-surface);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: border-color 0.2s;
}

.compat-logo:hover {
  border-color: var(--compat-accent);
}

.compat-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.compat-list li {
  padding: 10px 20px;
  background: var(--bg-surface);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 10px;
  font-size: 0.9rem;
  transition: border-color 0.2s;
}

.compat-list li:hover {
  border-color: var(--compat-accent);
}

@media (max-width: 700px) {
  .compat-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

/* ============================================
   Download CTA
   ============================================ */
.download-cta {
  padding: 88px 0 96px;
  background: var(--bg-card);
  text-align: center;
}

.download-headline {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 32px;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  padding: 32px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-icon {
  border-radius: 6px;
}

.footer-wordmark {
  font-size: 1rem;
  font-weight: 600;
}

.footer-tagline {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.footer-social {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: color 0.2s;
}

.footer-social:hover {
  color: var(--accent-blue);
}

@media (max-width: 480px) {
  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}