:root {
  --ink: #f7f8ff;
  --muted: rgba(247, 248, 255, 0.72);
  --muted-strong: rgba(247, 248, 255, 0.88);
  --surface: rgba(12, 18, 42, 0.48);
  --surface-strong: rgba(10, 15, 34, 0.7);
  --line: rgba(255, 255, 255, 0.14);
  --accent: #ffd166;
  --accent-cool: #79e2d0;
  --accent-warm: #ff7a90;
  --shadow: 0 22px 55px rgba(4, 7, 22, 0.24);
}

html {
  scroll-behavior: smooth;
  background:
    linear-gradient(135deg, rgba(10, 17, 43, 0.94), rgba(59, 18, 84, 0.88) 54%, rgba(0, 105, 109, 0.9)),
    repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.035) 0 1px, transparent 1px 18px);
}

body {
  color: var(--ink);
  background:
    linear-gradient(135deg, rgba(10, 17, 43, 0.94), rgba(59, 18, 84, 0.88) 54%, rgba(0, 105, 109, 0.9)),
    repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.035) 0 1px, transparent 1px 18px);
  background-attachment: fixed;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at 12% 8%, rgba(255, 209, 102, 0.14), transparent 26%), radial-gradient(circle at 88% 92%, rgba(121, 226, 208, 0.12), transparent 28%);
  z-index: -1;
}

.nav {
  position: relative;
  z-index: 3;
  max-width: 1200px;
  padding: 8px;
  margin: 0 auto 42px;
  gap: 7px;
  background: rgba(8, 13, 32, 0.42);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 12px 32px rgba(3, 7, 22, 0.14);
  backdrop-filter: blur(18px);
}

.nav a {
  border: 1px solid transparent;
  border-radius: 10px;
  color: var(--ink);
  padding: 9px 14px;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.nav a:hover,
.nav a:focus-visible {
  background: rgba(255, 209, 102, 0.14);
  border-color: rgba(255, 209, 102, 0.42);
  transform: translateY(-2px);
}

h1 {
  color: var(--ink);
  text-shadow: 0 10px 28px rgba(0, 0, 0, 0.22);
}

h2,
h3 {
  color: var(--ink);
}

p,
.lead,
.tagline {
  color: var(--muted-strong);
}

footer {
  color: var(--muted);
}

.btn,
button,
.add-btn,
.save-btn,
.remove-btn {
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 10px;
  font-weight: 700;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease, border-color 180ms ease;
}

.btn:hover,
button:hover,
.add-btn:hover,
.save-btn:hover,
.remove-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(4, 7, 22, 0.22);
}

.btn:focus-visible,
button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(255, 209, 102, 0.78);
  outline-offset: 3px;
}

.card,
.tracking-card,
.value-box,
.item,
.shop-banner,
.faqs details,
.share-section,
.section,
.stats,
.order {
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.055));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.card,
.tracking-card,
.value-box,
.faqs details,
.share-section,
.section,
.stats,
.order {
  border-radius: 16px;
}

input,
textarea,
select {
  color: var(--ink);
  background: rgba(7, 12, 32, 0.32);
  border-color: var(--line);
}

input::placeholder,
textarea::placeholder {
  color: rgba(247, 248, 255, 0.52);
}

input:focus,
textarea:focus,
select:focus {
  background: rgba(7, 12, 32, 0.5);
  border-color: rgba(255, 209, 102, 0.7);
  box-shadow: 0 0 0 4px rgba(255, 209, 102, 0.12);
}

.shop-banner {
  color: var(--muted-strong);
}

.item {
  box-shadow: 0 16px 34px rgba(4, 7, 22, 0.18);
}

.item:hover,
.value-box:hover,
.card:hover,
.faqs details:hover {
  border-color: rgba(121, 226, 208, 0.42);
  box-shadow: 0 24px 52px rgba(4, 7, 22, 0.28);
}

.buy-btn,
.save-btn,
.add-btn {
  background: var(--accent);
  color: #241800;
}

.buy-btn:hover,
.save-btn:hover,
.add-btn:hover {
  background: #ffe29a;
}

.link-btn {
  border: 1px solid var(--line);
  background: linear-gradient(100deg, rgba(255, 209, 102, 0.96), rgba(255, 122, 144, 0.92));
  color: #21152b;
  box-shadow: 0 14px 30px rgba(4, 7, 22, 0.2);
}

.link-btn:hover {
  border-color: rgba(255, 255, 255, 0.7);
  box-shadow: 0 18px 36px rgba(4, 7, 22, 0.3);
}

.faqs details {
  overflow: hidden;
  transition: border-color 180ms ease, background 180ms ease, transform 180ms ease;
}

.faqs details[open] {
  background: rgba(10, 15, 34, 0.58);
  border-color: rgba(255, 209, 102, 0.42);
}

.faqs summary {
  color: var(--ink);
}

.error {
  background: rgba(255, 122, 144, 0.16);
  border-color: rgba(255, 122, 144, 0.38);
}

.success {
  background: rgba(121, 226, 208, 0.16);
  border-color: rgba(121, 226, 208, 0.38);
}

.music-player {
  position: fixed;
  right: max(18px, env(safe-area-inset-right));
  bottom: max(18px, env(safe-area-inset-bottom));
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Inter', sans-serif;
}

.music-player audio {
  display: none;
}

.music-player__dot,
.music-player__controls button {
  border: 1px solid rgba(255, 255, 255, 0.28);
  color: var(--ink);
  background: rgba(8, 13, 32, 0.78);
  box-shadow: 0 10px 28px rgba(3, 7, 22, 0.3);
  backdrop-filter: blur(14px);
}

.music-player__dot {
  width: 48px;
  height: 48px;
  padding: 0;
  border-radius: 50%;
  display: grid;
  place-items: center;
}

.music-player__disc {
  width: 14px;
  height: 14px;
  border: 3px solid var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(255, 209, 102, 0.12);
}

.music-player.is-playing .music-player__disc {
  animation: musicPulse 1.2s ease-in-out infinite;
}

.music-player__panel {
  display: none;
  align-items: center;
  gap: 12px;
  max-width: min(300px, calc(100vw - 90px));
  padding: 8px 10px 8px 14px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 14px;
  background: rgba(8, 13, 32, 0.84);
  box-shadow: 0 10px 28px rgba(3, 7, 22, 0.3);
  backdrop-filter: blur(14px);
}

.music-player.is-expanded .music-player__panel {
  display: flex;
}

.music-player__song {
  min-width: 0;
  overflow: hidden;
  color: var(--muted-strong);
  font-size: 12px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.music-player__controls {
  display: flex;
  flex-shrink: 0;
  gap: 5px;
}

.music-player__controls button {
  width: 30px;
  height: 30px;
  padding: 0;
  border-radius: 50%;
  font-size: 12px;
}

.music-player__track-list {
  position: absolute;
  right: 10px;
  bottom: calc(100% + 8px);
  display: none;
  width: 220px;
  max-height: 220px;
  overflow-y: auto;
  padding: 6px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 12px;
  background: rgba(8, 13, 32, 0.94);
  box-shadow: 0 10px 28px rgba(3, 7, 22, 0.3);
  backdrop-filter: blur(14px);
}

.music-player.is-track-list-open .music-player__track-list {
  display: grid;
  gap: 3px;
}

.music-player__song,
.music-player__track {
  border: 0;
  color: var(--muted-strong);
  background: transparent;
  font: inherit;
  text-align: left;
}

.music-player__song {
  min-width: 0;
  max-width: 140px;
  overflow: hidden;
  padding: 0;
  font-size: 12px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.music-player__track {
  width: 100%;
  padding: 8px 9px;
  border-radius: 7px;
  font-size: 12px;
  cursor: pointer;
}

.music-player__track:hover,
.music-player__track.is-current {
  color: #241800;
  background: var(--accent);
}

.music-player__dot:hover,
.music-player__controls button:hover {
  border-color: rgba(255, 209, 102, 0.7);
  transform: translateY(-2px);
}

@keyframes musicPulse {
  50% { transform: scale(0.72); box-shadow: 0 0 0 7px rgba(255, 209, 102, 0.08); }
}

@media (max-width: 768px) {
  html {
    min-height: 100%;
    background:
      linear-gradient(160deg, rgba(10, 15, 40, 0.96), rgba(59, 17, 86, 0.91) 58%, rgba(0, 101, 105, 0.93)),
      repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.04) 0 1px, transparent 1px 16px);
  }

  body {
    min-height: calc(100svh + 300px);
    padding-top: max(64px, calc(env(safe-area-inset-top) + 24px));
    padding-bottom: max(300px, calc(env(safe-area-inset-bottom) + 256px));
    background:
      linear-gradient(160deg, rgba(10, 15, 40, 0.96), rgba(59, 17, 86, 0.91) 58%, rgba(0, 101, 105, 0.93)),
      repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.04) 0 1px, transparent 1px 16px);
    background-attachment: scroll;
  }

  body.home-page {
    justify-content: flex-start;
  }

  .nav {
    position: sticky;
    top: 10px;
    justify-content: flex-start;
    flex-wrap: nowrap;
    overflow-x: auto;
    margin: 0 -2px 30px;
    padding: 7px;
    scrollbar-width: none;
  }

  .nav::-webkit-scrollbar {
    display: none;
  }

  .nav a {
    flex: 0 0 auto;
    font-size: 12px;
    padding: 9px 12px;
  }

  h1 {
    font-size: clamp(2rem, 10vw, 2.8rem);
    line-height: 1.05;
  }

  .card,
  .tracking-card,
  .section,
  .stats,
  .order {
    border-radius: 14px;
  }

  .btn,
  button,
  .add-btn,
  .save-btn,
  .remove-btn {
    min-height: 42px;
  }

  .music-player {
    right: max(14px, env(safe-area-inset-right));
    bottom: max(14px, env(safe-area-inset-bottom));
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}