/* ============================================================
   Smarter Window — Design System
   Premium dark theme, glassmorphism, responsive
   ============================================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

/* --- CSS Custom Properties --- */
:root {
  --bg-primary: #0a0a1a;
  --bg-secondary: #111128;
  --bg-tertiary: #1a1a3e;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.08);

  --accent: #00d4ff;
  --accent-glow: rgba(0, 212, 255, 0.25);
  --accent-secondary: #7c3aed;
  --accent-gradient: linear-gradient(135deg, #00d4ff, #7c3aed);

  --text-primary: #ffffff;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(0, 212, 255, 0.3);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.15);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --max-width: 1200px;
  --section-padding: 120px 24px;
  --section-padding-mobile: 80px 16px;
}

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

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

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

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: opacity 0.2s;
}

a:hover {
  opacity: 0.85;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 24px;
}

h3 {
  font-size: 1.25rem;
  font-weight: 700;
}

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

/* --- Layout --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: var(--section-padding);
  position: relative;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 16px;
  padding: 6px 14px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-radius: 100px;
}

.section-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 60px;
  text-align: center;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 24px;
  transition: background 0.3s, backdrop-filter 0.3s;
}

.nav.scrolled {
  background: rgba(10, 10, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-logo svg {
  width: 28px;
  height: 28px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

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

.nav-links a:hover {
  color: var(--text-primary);
  opacity: 1;
}

.nav-cta {
  padding: 8px 20px;
  background: var(--accent);
  color: var(--bg-primary) !important;
  font-weight: 700 !important;
  border-radius: var(--radius-sm);
  font-size: 0.85rem !important;
  transition: transform 0.2s, box-shadow 0.2s !important;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
  opacity: 1 !important;
}

/* Mobile menu */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s;
}

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

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

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

/* --- Hero Section --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(0, 212, 255, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 80%, rgba(124, 58, 237, 0.06) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero h1 {
  margin-bottom: 24px;
  background: linear-gradient(to right, #ffffff, #c8d6e5);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.3rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.7;
}

.hero-badges {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 100px;
}

.badge svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.badge--hidden {
  display: none;
}

.hero-cta-group {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

.hero-image-wrapper {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-card), var(--shadow-glow);
  border: 1px solid var(--border-subtle);
}

.hero-image-wrapper img {
  width: 100%;
  display: block;
}

/* Video placeholder */
.video-placeholder {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  aspect-ratio: 16 / 9;
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: default;
}

.video-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.05), rgba(124, 58, 237, 0.05));
}

.video-placeholder-content {
  position: relative;
  text-align: center;
}

.video-placeholder .play-icon {
  width: 72px;
  height: 72px;
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.video-placeholder .play-icon svg {
  width: 28px;
  height: 28px;
  fill: var(--text-secondary);
  margin-left: 4px;
}

.video-placeholder p {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 700;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.25s ease;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-primary);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
  opacity: 1;
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  transform: translateY(-2px);
  opacity: 1;
}

/* --- Glass Card --- */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: transform 0.3s, border-color 0.3s, background 0.3s;
}

.glass-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
}

.glass-card .card-icon {
  width: 48px;
  height: 48px;
  background: rgba(0, 212, 255, 0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
}

.glass-card h3 {
  margin-bottom: 12px;
  color: var(--text-primary);
}

.glass-card p {
  font-size: 0.95rem;
  line-height: 1.65;
}

/* --- Problem Section --- */
#problem {
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.problem-card {
  text-align: center;
  padding: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.problem-card .card-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.problem-card .card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

.problem-card:hover .card-image img {
  transform: scale(1.05);
}

.problem-card .card-body {
  padding: 24px 28px 32px;
  flex: 1;
}

.problem-card .stat {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 8px;
}

.problem-card .stat-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

/* --- Installation Gallery --- */
.install-gallery {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  margin-top: 40px;
}

.install-gallery-item {
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  aspect-ratio: 3 / 4;
}

.install-gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.install-gallery-item:hover img {
  transform: scale(1.05);
}

.install-gallery-item .caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 10px 8px;
  background: linear-gradient(transparent, rgba(0,0,0,0.85));
  color: var(--text-primary);
  font-size: 0.7rem;
  font-weight: 600;
  text-align: center;
}

.install-gallery-item.video-item {
  grid-column: span 2;
  aspect-ratio: 16 / 9;
}

.install-gallery-item video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

@media (max-width: 900px) {
  .install-gallery {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 600px) {
  .install-gallery {
    grid-template-columns: repeat(2, 1fr);
  }
  .install-gallery-item:last-child {
    grid-column: 1 / -1;
    aspect-ratio: 16 / 9;
  }
  .install-gallery-item.video-item {
    grid-column: 1 / -1;
  }
}

.problem-closing {
  text-align: center;
  margin-top: 56px;
  font-size: 1.2rem;
  color: var(--text-primary);
  font-weight: 600;
}

.problem-closing em {
  color: var(--accent);
  font-style: normal;
}

/* --- How It Works / Product Section --- */
#how-it-works {
  background: var(--bg-secondary);
  text-align: center;
}

#features {
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  text-align: center;
}

/* --- Partners page hero --- */
.partners-hero {
  min-height: 70vh;
}

.product-hero-image {
  max-width: 600px;
  margin: 0 auto 60px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-subtle);
}

.product-hero-image img {
  width: 100%;
}

/* Installation steps */
/* --- Step Label Overlay (on gallery images) --- */
.step-label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 10px 12px;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.85));
  color: var(--text-primary);
  font-size: 0.78rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.step-label .step-number {
  width: 22px;
  height: 22px;
  background: var(--accent);
  color: var(--bg-primary);
  font-weight: 800;
  font-size: 0.7rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* Feature cards */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 56px;
}

/* Price anchor */
.price-anchor {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.price-main {
  font-size: 3rem;
  font-weight: 800;
  color: var(--text-primary);
}

.price-compare {
  font-size: 1.1rem;
  color: var(--text-muted);
  text-decoration: line-through;
}

.price-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 8px;
}

/* --- Technology Section --- */
#technology {
  background: var(--bg-primary);
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 56px;
}

.stats-bar {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
  padding-top: 40px;
  border-top: 1px solid var(--border-subtle);
}

.stat-item {
  text-align: center;
}

.stat-item .stat-number {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent);
  display: block;
}

.stat-item .stat-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 4px;
}

/* --- Ecosystem badges --- */
.ecosystem-bar {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  margin-bottom: 56px;
  padding: 24px 0;
}

.eco-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.eco-badge svg {
  width: 20px;
  height: 20px;
}

/* --- Waitlist / CTA Section --- */
#waitlist {
  background:
    radial-gradient(ellipse at 50% 50%, rgba(0, 212, 255, 0.06) 0%, transparent 60%),
    var(--bg-primary);
  text-align: center;
}

.waitlist-form {
  max-width: 480px;
  margin: 0 auto 32px;
  display: flex;
  gap: 12px;
}

.waitlist-form input[type="email"] {
  flex: 1;
  padding: 14px 20px;
  font-family: var(--font);
  font-size: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.2s;
}

.waitlist-form input[type="email"]::placeholder {
  color: var(--text-muted);
}

.waitlist-form input[type="email"]:focus {
  border-color: var(--accent);
}

.waitlist-form button {
  white-space: nowrap;
}

.waitlist-success {
  display: none;
  padding: 16px 24px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-md);
  color: var(--accent);
  font-weight: 600;
  max-width: 480px;
  margin: 0 auto 32px;
}

.waitlist-privacy {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 64px;
}

.partnership-divider {
  width: 64px;
  height: 1px;
  background: var(--border-subtle);
  margin: 0 auto 48px;
}

.partnership-cta {
  font-size: 1rem;
  color: var(--text-secondary);
}

.partnership-cta a {
  font-weight: 600;
}

/* --- Footer --- */
.footer {
  padding: 48px 24px;
  border-top: 1px solid var(--border-subtle);
  text-align: center;
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-brand {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 16px;
  list-style: none;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--text-secondary);
}

.footer-legal {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.8;
}

/* --- Scroll Animations --- */
.animate-in {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.animate-in.delay-1 { transition-delay: 0.1s; }
.animate-in.delay-2 { transition-delay: 0.2s; }
.animate-in.delay-3 { transition-delay: 0.3s; }
.animate-in.delay-4 { transition-delay: 0.4s; }

/* --- Responsive --- */
@media (max-width: 768px) {
  section {
    padding: var(--section-padding-mobile);
  }

  .nav-links {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(10, 10, 26, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border-subtle);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .problem-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .tech-grid {
    grid-template-columns: 1fr;
  }



  .hero h1 {
    font-size: 2.2rem;
  }

  .hero-subtitle {
    font-size: 1.05rem;
  }

  .waitlist-form {
    flex-direction: column;
  }

  .stats-bar {
    gap: 24px;
  }

  .ecosystem-bar {
    gap: 12px;
  }

  .price-main {
    font-size: 2.2rem;
  }

  .hero-badges {
    gap: 8px;
  }

  .badge {
    font-size: 0.7rem;
    padding: 5px 12px;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .problem-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .tech-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --- Cookie Consent Banner --- */
.cookie-consent {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  padding: 16px 24px;
  background: rgba(10, 10, 26, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-subtle);
  transform: translateY(100%);
  transition: transform 0.4s ease;
}

.cookie-consent.visible {
  transform: translateY(0);
}

.cookie-consent.hidden {
  display: none;
}

.cookie-consent-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.cookie-consent-inner p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin: 0;
  flex: 1;
}

.cookie-consent-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

.cookie-btn {
  padding: 8px 20px !important;
  font-size: 0.85rem !important;
}

@media (max-width: 768px) {
  .cookie-consent-inner {
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }
}