/* Renoar landing — dark Fluent / WinUI style */

:root {
  --bg: #1a1a1a;
  --bg-elevated: rgba(40, 40, 40, 0.55);
  --bg-card: rgba(45, 45, 45, 0.65);
  --bg-card-hover: rgba(55, 55, 55, 0.75);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #f3f3f3;
  --text-secondary: rgba(255, 255, 255, 0.62);
  --text-muted: rgba(255, 255, 255, 0.38);
  --accent-windows: #107c10;
  --accent-android: #e07020;
  --accent-ios: #8b5cf6;
  --accent-harmony: #0078d4;
  --radius: 10px;
  --radius-lg: 12px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  --font: "Segoe UI Variable", "Segoe UI", system-ui, -apple-system, sans-serif;
}

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

html {
  height: 100%;
}

body {
  min-height: 100%;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

/* Geometric diagonal line pattern */
.bg-pattern {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-color: var(--bg);
  background-image:
    repeating-linear-gradient(
      -45deg,
      transparent,
      transparent 18px,
      rgba(255, 255, 255, 0.015) 18px,
      rgba(255, 255, 255, 0.015) 19px
    );
}

.bg-pattern::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 15% 20%, rgba(16, 124, 16, 0.06), transparent 60%),
    radial-gradient(ellipse 50% 40% at 85% 70%, rgba(0, 120, 212, 0.05), transparent 55%);
}

/* Header */
.header {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 2.5rem;
  max-width: 1280px;
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.brand-logo {
  border-radius: 7px;
  flex-shrink: 0;
}

.brand-name {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.lang-pill {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  cursor: default;
  user-select: none;
}

/* Main layout */
.main {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 3rem;
  align-items: center;
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.5rem 2.5rem 3.5rem;
  min-height: calc(100vh - 72px);
}

/* Left column */
.hero-left {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.headline {
  font-size: clamp(2.75rem, 5.5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
  background: linear-gradient(135deg, #ffffff 30%, rgba(255, 255, 255, 0.55));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtext {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 28rem;
  line-height: 1.6;
}

/* Platform cards 2×2 */
.platforms {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.platform-card {
  position: relative;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  overflow: hidden;
  cursor: pointer;
  transition:
    background 0.2s ease,
    border-color 0.2s ease,
    transform 0.2s ease,
    box-shadow 0.2s ease;
}

.platform-card:hover,
.platform-card:focus-visible {
  background: var(--bg-card-hover);
  border-color: var(--border-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  outline: none;
}

.platform-card.is-selected {
  border-color: rgba(255, 255, 255, 0.22);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.06), var(--shadow);
}

.platform-accent {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
}

.accent-windows { background: var(--accent-windows); }
.accent-android { background: var(--accent-android); }
.accent-ios { background: var(--accent-ios); }
.accent-harmony { background: var(--accent-harmony); }

.platform-body {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: 1rem 1rem 1rem 1.15rem;
}

.platform-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
}

.platform-card[data-platform="windows"] .platform-icon { color: var(--accent-windows); }
.platform-card[data-platform="android"] .platform-icon { color: var(--accent-android); }
.platform-card[data-platform="ios"] .platform-icon { color: var(--accent-ios); }
.platform-card[data-platform="harmony"] .platform-icon { color: var(--accent-harmony); }

.platform-info {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.platform-name {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.platform-status {
  font-size: 0.75rem;
  font-weight: 500;
}

.status-ready { color: var(--accent-windows); }
.platform-card[data-platform="android"] .status-ready { color: var(--accent-android); }
.status-soon { color: var(--text-muted); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.45rem 0.9rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: opacity 0.15s ease, background 0.15s ease;
  width: fit-content;
}

.btn-download {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text);
  border: 1px solid var(--border-strong);
}

.btn-download:hover {
  background: rgba(255, 255, 255, 0.16);
}

.platform-card[data-platform="windows"] .btn-download {
  background: rgba(16, 124, 16, 0.25);
  border-color: rgba(16, 124, 16, 0.4);
  color: #8fdf8f;
}

.platform-card[data-platform="windows"] .btn-download:hover {
  background: rgba(16, 124, 16, 0.4);
}

.platform-card[data-platform="android"] .btn-download {
  background: rgba(224, 112, 32, 0.25);
  border-color: rgba(224, 112, 32, 0.4);
  color: #f5b880;
}

.platform-card[data-platform="android"] .btn-download:hover {
  background: rgba(224, 112, 32, 0.4);
}

.btn-disabled {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
  border: 1px solid var(--border);
  cursor: default;
}

.platform-card.disabled {
  opacity: 0.72;
}

.platform-card.disabled:hover {
  opacity: 0.85;
}

/* Right column — carousel */
.hero-right {
  display: flex;
  justify-content: center;
  align-items: center;
}

.carousel-frame {
  width: 100%;
  max-width: 560px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  backdrop-filter: blur(24px) saturate(1.3);
  -webkit-backdrop-filter: blur(24px) saturate(1.3);
  box-shadow: var(--shadow), 0 0 0 1px rgba(255, 255, 255, 0.03);
  overflow: hidden;
}

.carousel-chrome {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.2);
}

.carousel-chrome .dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  opacity: 0.55;
}

.carousel-chrome .dot.red { background: #ff5f57; }
.carousel-chrome .dot.yellow { background: #febc2e; }
.carousel-chrome .dot.green { background: #28c840; }

.chrome-title {
  margin-left: auto;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.01em;
}

.carousel-viewport {
  position: relative;
  aspect-ratio: 640 / 400;
  background: #141414;
  overflow: hidden;
}

.carousel-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.4s ease;
}

.carousel-image.is-fading {
  opacity: 0;
}

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 0.85rem 1rem 1rem;
}

.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  padding: 0;
  background: rgba(255, 255, 255, 0.2);
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}

.carousel-dot:hover {
  background: rgba(255, 255, 255, 0.4);
}

.carousel-dot.is-active {
  background: rgba(255, 255, 255, 0.85);
  transform: scale(1.2);
}

/* Responsive */
@media (max-width: 900px) {
  .main {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    padding: 1rem 1.5rem 3rem;
    min-height: auto;
  }

  .header {
    padding: 1rem 1.5rem;
  }

  .hero-right {
    order: -1;
  }

  .carousel-frame {
    max-width: 100%;
  }

  .headline {
    font-size: clamp(2.4rem, 10vw, 3.2rem);
  }
}

@media (max-width: 480px) {
  .platforms {
    grid-template-columns: 1fr;
  }

  .header {
    padding: 0.9rem 1.1rem;
  }

  .main {
    padding: 0.75rem 1.1rem 2.5rem;
  }

  .subtext {
    font-size: 0.95rem;
  }
}

/* Motion */
@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-left {
  animation: fade-up 0.55s ease both;
}

.hero-right {
  animation: fade-up 0.55s 0.12s ease both;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}