:root {
  --bg-dark: #0d0714;
  --bg-surface: #150b22;
  --bg-card: rgba(28, 16, 48, 0.65);
  
  --border-subtle: rgba(192, 132, 252, 0.18);
  --border-hover: rgba(192, 132, 252, 0.45);
  
  --text-bright: #ffffff;
  --text-primary: #f5f0ff;
  --text-dim: rgba(245, 240, 255, 0.82);
  --text-muted: rgba(245, 240, 255, 0.52);
  
  --violet-main: #a855f7;
  --violet-bright: #c084fc;
  --violet-light: #e9d5ff;
  --violet-glow: rgba(168, 85, 247, 0.38);
  --violet-subtle: rgba(168, 85, 247, 0.16);
  
  --font-heading: 'Oswald', 'Arial Narrow', sans-serif;
  --font-body: 'Golos Text', -apple-system, BlinkMacSystemFont, sans-serif;
  
  --container: 1240px;
  --header-height: 72px;
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --radius-pill: 999px;
  
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  min-width: 320px;
  overflow-x: hidden;
  width: 100%;
  background: 
    radial-gradient(circle at 80% 10%, rgba(168, 85, 247, 0.22), transparent 45vw),
    radial-gradient(circle at 15% 50%, rgba(192, 132, 252, 0.15), transparent 40vw),
    radial-gradient(circle at 85% 85%, rgba(168, 85, 247, 0.18), transparent 40vw),
    var(--bg-dark);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.05;
  background-image: linear-gradient(var(--violet-light) 1px, transparent 1px), linear-gradient(90deg, var(--violet-light) 1px, transparent 1px);
  background-size: 36px 36px;
}

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

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

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 48px);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  width: 100%;
  height: var(--header-height);
  background: rgba(13, 7, 20, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  height: 44px;
  filter: drop-shadow(0 0 10px var(--violet-glow));
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2.5vw, 32px);
  list-style: none;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dim);
  transition: color 200ms ease;
}

.nav-links a:hover {
  color: var(--violet-bright);
}

.mobile-menu-btn {
  display: none;
}

.section-screen {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 2;
  padding: calc(var(--header-height) + 30px) 0 50px;
}

.nav-arrow {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  color: var(--violet-bright);
  opacity: 0.75;
  padding: 8px;
  cursor: pointer;
  transition: all 250ms ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-arrow:hover {
  opacity: 1;
  color: #ffffff;
  filter: drop-shadow(0 0 8px var(--violet-glow));
}

.nav-arrow svg {
  width: 32px;
  height: 32px;
  fill: currentColor;
}

.nav-arrow-up {
  top: calc(var(--header-height) + 8px);
  animation: bounceUp 2.5s infinite;
}

.nav-arrow-down {
  bottom: 12px;
  animation: bounceDown 2.5s infinite;
}

@keyframes bounceUp {
  0%, 20%, 50%, 80%, 100% { transform: translate(-50%, 0); }
  40% { transform: translate(-50%, -6px); }
  60% { transform: translate(-50%, -3px); }
}

@keyframes bounceDown {
  0%, 20%, 50%, 80%, 100% { transform: translate(-50%, 0); }
  40% { transform: translate(-50%, 6px); }
  60% { transform: translate(-50%, 3px); }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 26px;
  min-height: 48px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  transition: all 300ms var(--ease-out);
}

.btn-solid {
  background: linear-gradient(135deg, var(--violet-bright), var(--violet-main));
  color: #ffffff;
  box-shadow: 0 4px 20px var(--violet-glow);
}

.btn-solid:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(168, 85, 247, 0.5);
}

.btn-line {
  background: rgba(245, 240, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}

.btn-line:hover {
  border-color: var(--violet-bright);
  background: var(--violet-subtle);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 18px;
  min-height: 38px;
  font-size: 13px;
}

.btn svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.badge-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--violet-bright);
  margin-bottom: 14px;
}

.badge-label::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--violet-bright);
  box-shadow: 0 0 10px var(--violet-bright);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(24px, 4vw, 60px);
  align-items: center;
  width: 100%;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 5.5vw, 5.2rem);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  margin-bottom: 16px;
  padding-top: 6px;
  background: linear-gradient(180deg, #ffffff 0%, var(--violet-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  font-size: clamp(14px, 1.1vw, 17px);
  color: var(--text-dim);
  margin-bottom: 24px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-mockup-wrap {
  position: relative;
  width: 100%;
  max-width: 460px;
  margin: 0 auto;
}

.hero-player-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: clamp(16px, 3vw, 24px);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  user-select: none;
}

.player-status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 16px;
  text-transform: uppercase;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: var(--violet-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  color: var(--violet-bright);
  font-weight: 600;
  transition: all 0.3s ease;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--violet-bright);
  box-shadow: 0 0 8px var(--violet-bright);
}

.player-track-info {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.cover-art-box {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: radial-gradient(circle, var(--violet-subtle), var(--bg-surface));
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}

.cover-art-box img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 6px;
}

.track-meta h3 {
  font-family: var(--font-heading);
  font-size: 18px;
  color: var(--text-bright);
  letter-spacing: 0.5px;
}

.track-meta p {
  font-size: 13px;
  color: var(--text-dim);
}

.progress-wrap {
  margin-bottom: 16px;
}

.progress-bar-container {
  position: relative;
  height: 6px;
  background: rgba(245, 240, 255, 0.12);
  border-radius: 3px;
  margin-bottom: 8px;
  cursor: pointer;
}

.progress-bar-fill {
  width: 0%;
  height: 100%;
  background: #ffffff;
  border-radius: 3px;
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
  transition: width 0.1s linear;
}

.progress-time {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.player-controls {
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: 8px;
}

.hero-player-card .control-btn {
  color: var(--text-dim);
  padding: 10px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  cursor: pointer;
  background: transparent;
  border: none;
}

.hero-player-card .control-btn:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
}

.hero-player-card .control-btn.active {
  color: var(--violet-bright);
  background: var(--violet-subtle);
}

.hero-player-card .control-btn.play-main {
  width: 46px;
  height: 46px;
  background: #ffffff;
  color: #000000;
  border-radius: 50%;
  box-shadow: 0 0 16px rgba(255, 255, 255, 0.3);
  padding: 0;
}

.hero-player-card .control-btn.play-main:hover {
  transform: scale(1.06);
  background: #f0f0f0;
  color: #000000;
}

.hero-player-card .control-btn.play-main svg {
  fill: #000000;
  width: 22px;
  height: 22px;
}

.hero-player-card .control-btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.section-header {
  margin-bottom: clamp(20px, 3.5vw, 36px);
  text-align: center;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3.6rem);
  font-weight: 500;
  line-height: 1.18;
  padding-top: 4px;
  text-transform: uppercase;
  color: var(--text-bright);
}

.section-action-wrap {
  text-align: center;
  margin-top: 24px;
}

.cards-grid {
  display: grid;
  gap: 16px;
  width: 100%;
}

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

.cards-grid-2x2 {
  grid-template-columns: repeat(2, 1fr);
}

.cards-grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.info-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: clamp(16px, 2vw, 22px);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  transition: all 300ms var(--ease-out);
  text-align: left;
}

.info-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

.card-header-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.card-num {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 600;
  color: var(--violet-bright);
  line-height: 1;
}

.card-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--violet-subtle);
  border: 1px solid var(--border-subtle);
  color: var(--violet-bright);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.card-icon svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.card-body h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-bright);
  margin-bottom: 6px;
}

.card-body p {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.45;
}

.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 30px 0 20px;
  background: var(--bg-surface);
  position: relative;
  z-index: 2;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-brand p {
  font-size: 12px;
  color: var(--text-muted);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  list-style: none;
}

.footer-nav a {
  font-size: 13px;
  color: var(--text-dim);
}

.footer-bottom {
  border-top: 1px solid rgba(245, 240, 255, 0.05);
  padding-top: 16px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
}

@media (max-width: 992px) {
  .hero-grid { grid-template-columns: 1fr; gap: 28px; }
  .cards-grid-4, .cards-grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  :root {
    --header-height: 56px;
  }

  .site-header {
    height: var(--header-height);
  }

  .header-inner {
    height: var(--header-height);
  }

  .brand-logo {
    height: 32px;
  }

  .header-cta {
    display: none;
  }

  .hero-mockup-wrap {
    display: none !important;
  }

  .mobile-menu-btn {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 101;
  }

  .mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--text-bright);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }

  .mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
  }

  .mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .site-header nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: rgba(13, 7, 20, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    padding: 18px 24px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  }

  .site-header nav.active {
    display: block;
  }

  .nav-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .nav-links a {
    font-size: 15px;
    font-weight: 500;
    display: block;
    width: 100%;
  }

  .section-screen {
    padding: calc(var(--header-height) + 10px) 0 16px;
    justify-content: center;
  }

  .nav-arrow svg {
    width: 22px;
    height: 22px;
  }

  .nav-arrow-up {
    top: calc(var(--header-height) + 2px);
  }

  .nav-arrow-down {
    bottom: 4px;
  }

  .section-header {
    margin-bottom: 10px;
  }

  .badge-label {
    font-size: 10px;
    margin-bottom: 4px;
  }

  .badge-label::before {
    width: 6px;
    height: 6px;
  }

  .section-title {
    font-size: 1.35rem;
    line-height: 1.15;
  }

  .section-action-wrap {
    margin-top: 10px;
  }

  .btn {
    min-height: 38px;
    padding: 8px 18px;
    font-size: 13px;
  }

  .hero-actions {
    flex-direction: column;
    gap: 8px;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-title {
    font-size: 2.2rem;
    margin-bottom: 8px;
    line-height: 1.12;
  }

  .hero-lead {
    font-size: 12px;
    margin-bottom: 12px;
    line-height: 1.35;
  }

  .cards-grid-4, .cards-grid-3, .cards-grid-2x2 {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .info-card {
    flex-direction: row;
    align-items: center;
    gap: 14px;
    padding: 12px 16px;
    border-radius: 14px;
  }

  .card-header-line {
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2px;
    margin-bottom: 0;
    flex-shrink: 0;
    width: 32px;
  }

  .card-num {
    font-size: 11px;
    line-height: 1;
  }

  .card-icon {
    width: 28px;
    height: 28px;
    border-radius: 8px;
  }

  .card-icon svg {
    width: 14px;
    height: 14px;
  }

  .card-body h3 {
    font-size: 13px;
    margin-bottom: 2px;
    line-height: 1.2;
  }

  .card-body p {
    font-size: 11px;
    line-height: 1.35;
  }

  .site-footer {
    padding: 16px 0 12px;
  }

  .footer-inner {
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 8px;
  }

  .footer-brand {
    justify-content: center;
  }

  .footer-brand p {
    display: none;
  }

  .footer-nav {
    display: none;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 2px;
    padding-top: 8px;
    font-size: 11px;
  }

  .footer-bottom span:last-child {
    display: none;
  }
}