/* ============================================================
   CSS Custom Properties – Dark (default) & Light themes
   ============================================================ */
:root {
  --bg:           #0d0f14;
  --bg-alt:       #13161e;
  --bg-card:      #1a1d27;
  --border:       #2a2d3a;
  --text:         #e4e6ef;
  --text-muted:   #8b90a8;
  --accent:       #4f8ef7;
  --accent-hover: #3a78e8;
  --accent-light: rgba(79, 142, 247, 0.12);
  --btn-text:     #ffffff;
  --shadow:       0 4px 24px rgba(0, 0, 0, 0.45);
  --radius:       12px;
  --radius-sm:    8px;
  --transition:   0.25s ease;
  --header-h:     245px;
  --font:         -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

[data-theme="light"] {
  --bg:           #f2f4f8;
  --bg-alt:       #ffffff;
  --bg-card:      #ffffff;
  --border:       #dde1ec;
  --text:         #1a1d27;
  --text-muted:   #5a5f7a;
  --accent:       #2563eb;
  --accent-hover: #1d4ed8;
  --accent-light: rgba(37, 99, 235, 0.10);
  --shadow:       0 4px 24px rgba(0, 0, 0, 0.10);
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background var(--transition), color var(--transition);
}

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

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-hover); }

/* ============================================================
   Utilities
   ============================================================ */
.container {
  width: 100%;
  max-width: 1120px;
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

.section {
  padding-block: clamp(3rem, 8vw, 6rem);
}

.section-title {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 0.5rem;
}

.section-sub {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 3rem;
  font-size: 1.05rem;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform 0.15s;
  white-space: nowrap;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--accent);
  color: var(--btn-text);
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--btn-text);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}
.btn-outline:hover {
  background: var(--accent-light);
  color: var(--accent);
}

.btn-sm { padding: 0.45rem 1rem; font-size: 0.875rem; }

/* ============================================================
   Header & Nav
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding-block: 0.75rem;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
  transition: background var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}
.logo img {
  height: 48px;
  width: auto;
  display: block;
}
.logo:hover { opacity: 0.85; }

.main-nav {
  display: flex;
  gap: 2rem;
}
.main-nav a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
}
.main-nav a:hover { color: var(--text); }

/* Theme toggle */
.theme-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text);
  transition: background var(--transition), border-color var(--transition);
  flex-shrink: 0;
}
.theme-toggle:hover { background: var(--accent-light); }

/* Hide/show sun & moon based on theme */
[data-theme="dark"]  .icon-sun  { display: none; }
[data-theme="dark"]  .icon-moon { display: inline; }
[data-theme="light"] .icon-sun  { display: inline; }
[data-theme="light"] .icon-moon { display: none; }

/* Hamburger */
.nav-hamburger {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 1.3rem;
  padding: 0.3rem 0.6rem;
  cursor: pointer;
  line-height: 1;
}

/* Mobile nav drawer */
.mobile-nav {
  display: none;
  flex-direction: column;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 1rem 1.5rem;
  gap: 1rem;
}
.mobile-nav.open { display: flex; }
.mobile-nav-link {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 1rem;
}
.mobile-nav-link:hover { color: var(--text); }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  background: var(--bg-alt);
  padding-block: clamp(3.5rem, 10vw, 7rem);
  border-bottom: 1px solid var(--border);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 6vw, 4rem);
  align-items: center;
}

.badge {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}

.hero-text h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1rem;
  letter-spacing: -0.5px;
}

.tagline {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 46ch;
}

.hero-cta { display: flex; gap: 1rem; flex-wrap: wrap; }

/* Mockup placeholder */
.hero-mockup {
  display: flex;
  justify-content: center;
}
.mockup-img {
  width: 100%;
  max-width: 340px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  background: var(--bg-card);
  min-height: 320px;
  object-fit: cover;
}

/* ============================================================
   Apps Section
   ============================================================ */
.apps-section { background: var(--bg); }

.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.app-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  transition: box-shadow var(--transition), transform var(--transition);
}
.app-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.app-card-icon {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
}
.app-card-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.placeholder-icon {
  font-size: 2rem;
  color: var(--text-muted);
}

.app-card-body { flex: 1; }
.app-card-body h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.app-card-body p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 1rem; }

.app-card--coming-soon { opacity: 0.6; }

/* ============================================================
   Features Section
   ============================================================ */
.features-section { background: var(--bg-alt); }

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.5rem;
}

.feature-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  text-align: center;
  transition: box-shadow var(--transition), transform var(--transition);
}
.feature-item:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.feature-icon {
  font-size: 2.2rem;
  margin-bottom: 0.85rem;
}

.feature-item h4 { font-size: 1.05rem; margin-bottom: 0.5rem; }
.feature-item p  { color: var(--text-muted); font-size: 0.9rem; }

/* ============================================================
   Screenshots Gallery
   ============================================================ */
.screenshots {
  margin-top: 3.5rem;
}

.screenshots-title {
  font-size: 1.3rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 1.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.9rem;
}

.screenshots-track {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1.25rem;
}

.screenshot-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  transition: box-shadow var(--transition), transform var(--transition);
}

.screenshot-item:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.screenshot-item img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: var(--bg-alt);
}

.screenshot-item figcaption {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  text-align: center;
}

/* ============================================================
   Download Section
   ============================================================ */
.download-section {
  background: var(--bg);
  border-top: 1px solid var(--border);
}

/* Rotator wrapper */
.download-rotator {
  position: relative;
}

/* Dot indicators */
.rotator-dots {
  display: flex;
  justify-content: center;
  gap: 0.6rem;
  margin-bottom: 2rem;
}

.rotator-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  background: transparent;
  cursor: pointer;
  padding: 0;
  transition: background var(--transition), transform var(--transition);
}

.rotator-dot.active {
  background: var(--accent);
  transform: scale(1.3);
}

/* Slide stack — all occupy the same grid cell */
.download-slides {
  display: grid;
}

.download-slide {
  grid-column: 1;
  grid-row: 1;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease;
}

.download-slide.active {
  opacity: 1;
  pointer-events: auto;
}

.download-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 6vw, 4rem);
  align-items: center;
}

.download-text h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 0.75rem; }
.download-text p  { color: var(--text-muted); margin-bottom: 2rem; }

.store-badges { display: flex; gap: 1rem; flex-wrap: wrap; }

.badge-wrapper {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
}

.coming-soon-tag {
  background: var(--accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  white-space: nowrap;
}

.store-badge {
  display: inline-block;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: box-shadow var(--transition), transform var(--transition);
}
.store-badge:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.store-badge img {
  height: 48px;
  width: auto;
  display: block;
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding-block: 1.25rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-copy { color: var(--text-muted); font-size: 0.875rem; }

.footer-links { display: flex; gap: 1.5rem; }
.footer-links a { color: var(--text-muted); font-size: 0.875rem; }
.footer-links a:hover { color: var(--text); }

/* ============================================================
   Lightbox
   ============================================================ */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 500;
  align-items: center;
  justify-content: center;
}

.lightbox.active { display: flex; }

.lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.88);
  backdrop-filter: blur(4px);
}

.lightbox-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: min(90vw, 480px);
  width: 100%;
  padding: 1rem;
}

.lightbox-img {
  width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--radius);
  box-shadow: 0 8px 48px rgba(0, 0, 0, 0.7);
  user-select: none;
  transition: opacity 0.2s ease;
}

.lightbox-img.loading { opacity: 0; }

.lightbox-caption {
  margin-top: 0.85rem;
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  text-align: center;
  letter-spacing: 0.03em;
}

/* Close button */
.lightbox-close {
  position: absolute;
  top: -2.5rem;
  right: 0;
  background: none;
  border: none;
  color: #fff;
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  opacity: 0.8;
  transition: opacity 0.2s;
}
.lightbox-close:hover { opacity: 1; }

/* Prev / Next arrows */
.lightbox-prev,
.lightbox-next {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  font-size: 2.2rem;
  line-height: 1;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
  z-index: 2;
  padding: 0;
}
.lightbox-prev { left: clamp(0.5rem, 2vw, 1.5rem); }
.lightbox-next { right: clamp(0.5rem, 2vw, 1.5rem); }
.lightbox-prev:hover,
.lightbox-next:hover { background: rgba(255, 255, 255, 0.25); }

/* Clickable screenshots cursor */
[data-lightbox] { cursor: zoom-in; }

/* ============================================================
   Scroll-reveal animation
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 768px) {
  .main-nav  { display: none; }
  .nav-hamburger { display: inline-flex; }

  .hero-inner,
  .download-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-text h1 { text-align: center; }
  .tagline      { margin-inline: auto; }
  .hero-cta     { justify-content: center; }

  .hero-mockup { order: -1; }

  .download-mockup { display: none; }

  .screenshots-track { grid-template-columns: repeat(3, 1fr); }

  .footer-inner { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }
}

@media (max-width: 480px) {
  .apps-grid,
  .features-grid,
  .screenshots-track {
    grid-template-columns: 1fr;
  }
  .app-card { flex-direction: column; }
}