* {
  box-sizing: border-box;
}

:root {
  color-scheme: light;
  --bg: #f5f1e8;
  --paper: #fffdf8;
  --ink: #222a2e;
  --muted: #65716d;
  --line: #ded3c4;
  --green: #28735c;
  --blue: #2f5f98;
  --amber: #b06d22;
  --red: #a34536;
  --soft-green: #e7f2ee;
  --soft-blue: #e9eef7;
  --soft-amber: #f7ecdc;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
}

button,
input {
  font: inherit;
}

.app-header {
  background: #24312f;
  color: #fffdf8;
  border-bottom: 4px solid #d0a35b;
}

.header-inner {
  width: min(1080px, 100%);
  margin: 0 auto;
  padding: 28px 18px 22px;
}

.brand {
  margin: 0 0 8px;
  color: #e7d0a4;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0;
}

h1 {
  margin: 0;
  font-size: clamp(28px, 6vw, 44px);
  line-height: 1.1;
  letter-spacing: 0;
}

.stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.stats span {
  padding: 7px 10px;
  border: 1px solid rgba(255, 253, 248, .34);
  border-radius: 6px;
  color: #fff8e8;
  font-size: 14px;
}

.app-main {
  width: min(1080px, 100%);
  margin: 0 auto;
  padding: 18px 14px 110px;
}

.toolbar {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px;
  align-items: end;
  margin-bottom: 14px;
}

.search-wrap {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.search-wrap input {
  width: 100%;
  min-height: 46px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  color: var(--ink);
  outline: none;
}

.search-wrap input:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(40, 115, 92, .14);
}

.mode-tabs {
  display: grid;
  grid-template-columns: repeat(4, minmax(56px, 1fr));
  gap: 6px;
}

.tab {
  min-height: 46px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  color: var(--muted);
  cursor: pointer;
}

.tab.is-active {
  border-color: #24312f;
  background: #24312f;
  color: #fff;
}

.now-card {
  position: sticky;
  top: 0;
  z-index: 5;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: 16px;
  align-items: center;
  margin: 0 0 16px;
  padding: 14px;
  border: 1px solid #d9ccb9;
  border-radius: 8px;
  background: #fff9ed;
  box-shadow: 0 8px 18px rgba(36, 49, 47, .08);
}

.now-label {
  margin: 0 0 4px;
  color: var(--amber);
  font-size: 13px;
  font-weight: 800;
}

.now-card h2 {
  margin: 0;
  font-size: 20px;
  line-height: 1.25;
}

.now-card p:last-child {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 14px;
}

audio {
  width: 100%;
}

.lesson-list {
  display: grid;
  gap: 10px;
}

.lesson-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

.lesson-card.is-current {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(40, 115, 92, .12);
}

.lesson-title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-width: 0;
}

.day-badge {
  flex: 0 0 auto;
  width: 64px;
  padding: 6px 0;
  border-radius: 6px;
  background: #efe5d4;
  color: #6f4f2b;
  text-align: center;
  font-size: 13px;
  font-weight: 800;
}

.lesson-title h3 {
  min-width: 0;
  margin: 0;
  overflow-wrap: anywhere;
  font-size: 18px;
  line-height: 1.25;
}

.lesson-actions {
  display: grid;
  grid-template-columns: repeat(3, 88px);
  gap: 8px;
}

.play-btn {
  min-height: 42px;
  border: 1px solid transparent;
  border-radius: 8px;
  color: #fff;
  cursor: pointer;
  font-weight: 800;
}

.play-btn[data-version="standard"] {
  background: var(--green);
}

.play-btn[data-version="slow"] {
  background: var(--blue);
}

.play-btn[data-version="follow"] {
  background: var(--amber);
}

.play-btn.is-active {
  outline: 3px solid rgba(36, 49, 47, .22);
  outline-offset: 2px;
}

.empty-state {
  margin: 28px 0;
  color: var(--muted);
  text-align: center;
}

@media (max-width: 760px) {
  .toolbar {
    grid-template-columns: 1fr;
  }

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

  .now-card {
    grid-template-columns: 1fr;
  }

  .lesson-card {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 420px) {
  .header-inner {
    padding-top: 22px;
  }

  .app-main {
    padding-left: 10px;
    padding-right: 10px;
  }

  .lesson-title {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .day-badge {
    width: auto;
    padding: 6px 10px;
  }

  .play-btn,
  .tab {
    min-height: 44px;
    padding-left: 6px;
    padding-right: 6px;
  }
}