:root {
  --bg: #ffffff;
  --text: #111111;
  --muted: #666666;
  --line: #dddddd;
  --link: #0a58ca;
  --maxw: 760px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font: 16px/1.35 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
}

button,
input {
  font: inherit;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 24px 20px 56px;
}

.topbar {
  padding: 0 0 18px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 28px;
}

.home-link {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
}

.home-link:hover {
  text-decoration: underline;
}

.intro {
  margin-bottom: 18px;
}

h1 {
  font-size: 26px;
  margin: 0;
  font-weight: 700;
}

.controls {
  padding: 0 0 18px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 10px;
}

.search-label {
  display: block;
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 14px;
}

.search-input {
  width: 100%;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 10px;
  background: white;
  color: var(--text);
}

.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.filter-tab {
  min-height: 32px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 10px;
  background: #ffffff;
  color: var(--text);
  cursor: pointer;
}

.filter-tab.is-active {
  background: #f2f2f2;
  font-weight: 600;
}

.music-list {
  display: block;
}

.music-card {
  display: block;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.cover,
.cover-fallback {
  display: none;
}

.music-type {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 13px;
  text-transform: uppercase;
}

.music-title {
  margin: 0 0 4px;
  font-size: 17px;
  line-height: 1.3;
}

.music-meta,
.music-note {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.45;
}

.music-note {
  margin-top: 6px;
}

.card-link {
  display: inline-block;
  margin-top: 8px;
  color: var(--link);
}

.empty-state {
  padding: 14px 0;
  color: var(--muted);
}

.lock-screen {
  min-height: calc(100vh - 80px);
  display: grid;
  place-items: center;
}

.lock-panel {
  width: min(460px, 100%);
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.lock-panel h1 {
  font-size: 26px;
}

.code-form {
  display: grid;
  gap: 10px;
  margin-top: 24px;
}

.code-form label {
  color: var(--muted);
  font-size: 14px;
}

.code-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}

.code-row input {
  min-width: 0;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 12px;
}

.code-row button {
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 16px;
  background: var(--text);
  color: white;
  cursor: pointer;
}

.form-message {
  min-height: 20px;
  margin: 0;
  color: #b00020;
  font-size: 14px;
}

@media (max-width: 720px) {
  .wrap {
    padding: 20px 16px 48px;
  }
}