/* ==========================================================================
   OWMB - OpenWav Media Browser
   Theme: Minimal Professional Audio Studio (Swiss Typography & Dark Mode Accent)
   ========================================================================== */

:root {
  --bg-primary: #0a0b0e;
  --bg-secondary: #101217;
  --bg-tertiary: #171a21;
  --bg-card: #13151c;
  --bg-card-hover: #1b1e28;

  --border-color: #232733;
  --border-color-subtle: #1c202b;
  --border-color-focus: #00d2c4;

  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;

  --accent-cyan: #00d2c4;
  --accent-cyan-dim: rgba(0, 210, 196, 0.15);
  --accent-blue: #3b82f6;
  --accent-green: #10b981;

  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-xl: 16px;
  --radius-lg: 12px;
  --radius-md: 8px;
  --radius-sm: 6px;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);

  --transition: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html, body {
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border: none;
  outline: none;
  background: transparent;
  box-shadow: none;
}

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

/* Layout Container - Wider, Spacious Desktop Grid */
.container {
  width: 92%;
  max-width: 1240px;
  margin: 0 auto;
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  width: 100%;
  background: rgba(10, 11, 14, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  padding: 0.85rem 0;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Pure White Logo against Dark Background */
.nav-logo-img {
  height: 32px;
  width: auto;
  object-fit: contain;
  filter: invert(1) brightness(2);
  transition: opacity var(--transition);
}

.brand-logo:hover .nav-logo-img {
  opacity: 0.9;
}

.version-badge {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  background: var(--bg-tertiary);
  color: var(--accent-cyan);
  border: 1px solid var(--border-color);
  padding: 0.15rem 0.55rem;
  border-radius: 20px;
  letter-spacing: 0.5px;
}

.nav-links {
  display: flex;
  gap: 2.25rem;
}

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

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.65rem 1.35rem;
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  text-decoration: none;
}

.btn-lg {
  padding: 0.85rem 1.75rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
}

.btn-primary {
  background: var(--accent-cyan);
  color: #090a0f;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(0, 210, 196, 0.25);
}

.btn-primary:hover {
  background: #24dfd2;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 210, 196, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  background: var(--bg-tertiary);
  border-color: var(--text-dim);
}

.btn-glass {
  background: var(--bg-tertiary);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-glass:hover {
  background: var(--bg-card-hover);
  border-color: var(--text-muted);
  transform: translateY(-1px);
}

.btn-full {
  width: 100%;
}

/* Hero Section */
.hero-section {
  padding: 4.5rem 0 6rem 0;
  text-align: center;
  position: relative;
  background: radial-gradient(circle at 50% 12%, rgba(0, 210, 196, 0.08) 0%, transparent 60%);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 500;
  padding: 0.35rem 1rem;
  border-radius: 20px;
  margin-bottom: 1.75rem;
  font-family: var(--font-mono);
}

.badge-dot {
  width: 7px;
  height: 7px;
  background: var(--accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-cyan);
}

.hero-title {
  font-size: 3.35rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1.2px;
  max-width: 900px;
  margin: 0 auto 1.5rem auto;
  color: #ffffff;
  background: linear-gradient(180deg, #ffffff 50%, #a1a1aa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 780px;
  margin: 0 auto 2.25rem auto;
  font-weight: 400;
  line-height: 1.7;
}

.hero-subtitle strong {
  color: var(--text-main);
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

/* Hero Showcase Container - Wider, Generous Presentation */
.hero-showcase-container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
}

/* Gallery Tabs Navigation - Hidden Scrollbar */
.gallery-tabs-container {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 0.25rem 0 1rem 0;
  margin-bottom: 1.15rem;
  text-align: center;
}

.gallery-tabs-container::-webkit-scrollbar {
  display: none;
}

.gallery-tabs {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.25rem;
  max-width: 100%;
}

.tab-btn {
  padding: 0.55rem 1.2rem;
  border-radius: 24px;
  font-family: var(--font-main);
  font-weight: 500;
  font-size: 0.86rem;
  background: var(--bg-card);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
  user-select: none;
}

.tab-btn i {
  font-size: 0.85rem;
}

.tab-btn:hover {
  color: var(--text-main);
  background: var(--bg-tertiary);
  border-color: var(--text-dim);
}

.tab-btn.active {
  background: var(--accent-cyan);
  color: #090a0f;
  border-color: var(--accent-cyan);
  font-weight: 600;
  box-shadow: 0 2px 12px rgba(0, 210, 196, 0.35);
}

/* Gallery Viewport: Spacious, Wider Display with Full Crispness */
.gallery-viewport {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  background: transparent;
  border: none;
  outline: none;
  position: relative;
}

.gallery-slide {
  display: none !important;
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
}

.gallery-slide.active {
  display: block !important;
  animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.998); }
  to { opacity: 1; transform: scale(1); }
}

.image-zoom-trigger {
  position: relative;
  cursor: zoom-in;
  background: transparent;
  border: none;
  outline: none;
  user-select: none;
  width: 100%;
}

.gallery-img {
  width: 100%;
  height: auto;
  display: block;
  border: none;
  outline: none;
  background: transparent;
  object-fit: contain;
  transition: transform 0.25s ease;
}

.image-zoom-trigger:hover .gallery-img {
  transform: scale(1.005);
}

.zoom-overlay {
  position: absolute;
  bottom: 1.5rem;
  right: 1.5rem;
  background: rgba(10, 11, 14, 0.88);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 0.4rem 0.85rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  opacity: 0;
  transform: translateY(4px);
  transition: all var(--transition);
  pointer-events: none;
}

.image-zoom-trigger:hover .zoom-overlay {
  opacity: 1;
  transform: translateY(0);
}

/* Gallery Caption Banner */
.gallery-caption-banner {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  margin-top: 1.25rem;
  padding: 1.25rem 1.6rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  text-align: left;
}

.caption-info {
  flex: 1;
}

.caption-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  display: block;
  margin-bottom: 0.25rem;
}

.caption-text {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.gallery-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.gallery-nav-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition);
  font-size: 0.85rem;
}

.gallery-nav-btn:hover {
  background: var(--accent-cyan);
  color: #090a0f;
  border-color: var(--accent-cyan);
}

.gallery-counter {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-dim);
  min-width: 45px;
  text-align: center;
}

.gallery-fullscreen-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.gallery-fullscreen-btn:hover {
  background: var(--accent-cyan);
  color: #090a0f;
  border-color: var(--accent-cyan);
}

/* Features Grid */
.features-section {
  padding: 6rem 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.section-header {
  margin-bottom: 2.75rem;
}

.section-header.center {
  text-align: center;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 0.5rem;
  display: block;
  font-weight: 600;
}

.section-title {
  font-size: 2.35rem;
  font-weight: 700;
  letter-spacing: -0.75px;
  color: var(--text-main);
  margin-bottom: 0.75rem;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.08rem;
  max-width: 660px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color-subtle);
  border-radius: var(--radius-lg);
  padding: 2.25rem 2rem;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-color);
  transform: translateY(-2px);
}

.feature-icon {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 1.35rem;
  background: var(--accent-cyan-dim);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 210, 196, 0.2);
}

.feature-card h3 {
  font-size: 1.18rem;
  font-weight: 600;
  margin-bottom: 0.65rem;
  color: var(--text-main);
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.94rem;
  line-height: 1.6;
}

/* Download Section */
.download-section {
  padding: 6rem 0;
  background: var(--bg-primary);
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
  gap: 1.85rem;
  max-width: 1080px;
  margin: 0 auto;
}

.download-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2.4rem 2.1rem;
  text-align: center;
  position: relative;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.download-card:hover {
  background: var(--bg-card-hover);
  border-color: #383e52;
  transform: translateY(-3px);
}

.featured-card {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 24px rgba(0, 210, 196, 0.15);
}

.card-badge {
  position: absolute;
  top: -11px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-cyan);
  color: #090a0f;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.15rem 0.65rem;
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.os-icon {
  font-size: 2.75rem;
  color: var(--text-main);
  margin-bottom: 1rem;
}

.download-card h3 {
  font-size: 1.35rem;
  margin-bottom: 0.35rem;
}

.card-subtitle {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  display: block;
  margin-bottom: 1.5rem;
}

.spec-list {
  list-style: none;
  text-align: left;
  margin-bottom: 2rem;
  flex: 1;
}

.spec-list li {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 0.65rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.spec-list li i {
  color: var(--accent-cyan);
  font-size: 0.8rem;
}

.spec-list code {
  font-family: var(--font-mono);
  background: var(--bg-tertiary);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  color: var(--text-main);
  font-size: 0.78rem;
}

/* Developer Build Section */
.build-section {
  padding: 6rem 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

.terminal-card {
  background: #08090c;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  max-width: 800px;
  margin: 0 auto;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.terminal-header {
  background: #11131a;
  padding: 0.65rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
}

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.copy-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.3rem 0.75rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.copy-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--text-dim);
}

.terminal-body {
  padding: 1.6rem;
  overflow-x: auto;
}

.terminal-body pre {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  line-height: 1.7;
  color: #e5e7eb;
}

/* Lightbox Modal */
.lightbox-modal {
  display: none;
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 9999;
}

.lightbox-modal.open {
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s ease-out;
}

.lightbox-backdrop {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.lightbox-container {
  position: relative;
  z-index: 10000;
  width: min(95vw, 1340px);
  max-height: 94vh;
  display: flex;
  flex-direction: column;
  background: #11131a;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.95);
  margin: auto;
}

.lightbox-header {
  padding: 0.75rem 1.25rem;
  background: #14161d;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.lightbox-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  font-family: var(--font-mono);
}

.lightbox-close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.2rem;
  cursor: pointer;
  transition: color var(--transition);
  padding: 0.25rem;
  line-height: 1;
}

.lightbox-close-btn:hover {
  color: #ff5f56;
}

.lightbox-image-wrapper {
  overflow: auto;
  max-height: calc(88vh - 90px);
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem;
}

.lightbox-img {
  max-width: 100%;
  max-height: calc(88vh - 90px);
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius-md);
  border: none;
  outline: none;
  background: transparent;
}

.lightbox-footer {
  padding: 0.65rem 1.25rem;
  background: #14161d;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.lightbox-nav-buttons {
  display: flex;
  gap: 0.5rem;
}

.lightbox-arrow-btn {
  width: 30px;
  height: 30px;
  border-radius: 4px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.8rem;
  transition: all var(--transition);
}

.lightbox-arrow-btn:hover {
  background: var(--accent-cyan);
  color: #090a0f;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem 0;
}

.footer-container {
  display: flex;
  justify-content: space-between;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-top: 1rem;
  max-width: 360px;
  line-height: 1.6;
}

.footer-links {
  display: flex;
  gap: 4rem;
}

.link-col h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-main);
}

.link-col a {
  display: block;
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-bottom: 0.5rem;
  transition: color var(--transition);
}

.link-col a:hover {
  color: var(--accent-cyan);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
}

.footer-bottom-content {
  display: flex;
  justify-content: space-between;
  color: var(--text-dim);
  font-size: 0.82rem;
}

.footer-bottom-content a {
  color: var(--text-muted);
}

.footer-bottom-content a:hover {
  color: var(--accent-cyan);
}

/* Responsive Rules */
@media (max-width: 900px) {
  .hero-title { font-size: 2.5rem; }
  .gallery-tabs { justify-content: center; }
  .footer-container { flex-direction: column; gap: 2rem; }
  .footer-links { gap: 2.5rem; }
}

@media (max-width: 640px) {
  .hero-title { font-size: 2rem; }
  .hero-subtitle { font-size: 0.98rem; }
  .nav-links { display: none; }
  .hero-cta { flex-direction: column; }
  .btn-lg { width: 100%; }
  .gallery-tabs { justify-content: flex-start; }
  .gallery-caption-banner { flex-direction: column; align-items: flex-start; }
  .gallery-controls { width: 100%; justify-content: space-between; margin-top: 0.5rem; }
  .footer-bottom-content { flex-direction: column; text-align: center; gap: 0.5rem; }
}