:root {
  --navy: #7a1c2e;
  --navy-dark: #5e1423;
  --blue: #a8324a;
  --link-blue: #2563eb;
  --text: #111;
  --text-sub: #6b7280;
  --divider: #d7d9de;
  --bg: #fff;
  --search-bg: #e8e9ec;
  --pink: #e91e8c;
  --purple: #7b1fd1;
  --prev-gray: #b08d96;
}

* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  height: 100%;
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Apple SD Gothic Neo", sans-serif;
  color: var(--text);
  overscroll-behavior-y: none;
}

.hidden { display: none !important; }

.view {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg);
}

/* ===== 헤더 ===== */
.app-header {
  background: var(--navy);
  color: #fff;
  padding-top: env(safe-area-inset-top);
  height: calc(56px + env(safe-area-inset-top));
  display: flex;
  align-items: center;
  padding-left: 16px;
  padding-right: 10px;
  flex-shrink: 0;
  border-bottom: 4px solid var(--navy);
}

.app-header .logo { height: 26px; }

.app-header .icon-btn {
  background: none;
  border: none;
  color: #fff;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.app-header .icon-btn svg { width: 26px; height: 26px; }
.app-header .menu-btn { margin-left: auto; }

.song-header { gap: 2px; padding-left: 4px; }
.song-header .back-btn { flex-shrink: 0; }
.song-header .song-title {
  font-size: 19px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}
.song-header .menu-btn { margin-left: 0; }

/* ===== 검색 ===== */
.search-wrap {
  padding: 12px 14px;
  border-bottom: 1px solid var(--divider);
  flex-shrink: 0;
}
.search-box {
  background: var(--search-bg);
  border-radius: 10px;
  display: flex;
  align-items: center;
  padding: 0 10px;
  height: 42px;
}
.search-box .search-icon { width: 20px; height: 20px; color: #8a8f98; flex-shrink: 0; }
.search-box input {
  flex: 1;
  border: none;
  background: none;
  outline: none;
  font-size: 17px;
  padding: 0 8px;
  color: var(--text);
}
.search-box input::placeholder { color: #9aa0a8; }
.search-box input::-webkit-search-cancel-button { display: none; }
.clear-btn {
  border: none;
  background: #c4c8cf;
  color: #fff;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.search-box.has-text .clear-btn { display: flex; }

/* ===== 곡 목록 ===== */
.list-area {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 0 14px calc(30px + env(safe-area-inset-bottom));
}
.range-label {
  color: var(--text-sub);
  font-size: 20px;
  font-weight: 600;
  padding: 14px 2px 6px;
}
.song-list { list-style: none; }
.song-list li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 2px;
  border-bottom: 1px solid var(--divider);
  cursor: pointer;
}
.song-list li:active { background: #f3f4f6; }
.song-list .num {
  color: var(--blue);
  font-size: 22px;
  font-weight: 600;
  min-width: 58px;
  text-align: center;
  flex-shrink: 0;
}
.song-list .info { min-width: 0; }
.song-list .title {
  font-size: 21px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.song-list .first-line {
  color: var(--text-sub);
  font-size: 16px;
  margin-top: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.empty-msg {
  text-align: center;
  color: var(--text-sub);
  padding: 60px 20px;
  font-size: 16px;
  line-height: 1.7;
}

/* ===== 우측 빠른 이동 ===== */
.quick-jump {
  position: fixed;
  right: 4px;
  top: 50%;
  transform: translateY(-40%);
  display: flex;
  flex-direction: column;
  gap: 2px;
  z-index: 5;
}
.quick-jump button {
  background: none;
  border: none;
  color: var(--link-blue);
  font-size: 16px;
  font-weight: 600;
  padding: 2px 8px;
  cursor: pointer;
  text-align: right;
}

/* ===== 곡 보기: 악보 ===== */
.sheet-area {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  background: #fff;
  padding-bottom: calc(110px + env(safe-area-inset-bottom));
}
.sheet-area img {
  display: block;
  width: 100%;
  height: auto;
}
.sheet-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  color: var(--text-sub);
  padding: 90px 24px;
  text-align: center;
  line-height: 1.8;
}
.sheet-placeholder svg { width: 64px; height: 64px; color: #c4c8cf; }

/* ===== 곡 보기: 가사 ===== */
.lyrics-area {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 28px 18px calc(130px + env(safe-area-inset-bottom));
}
.lyrics-text {
  text-align: center;
  font-size: 24px;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: normal;
  overflow-wrap: break-word;
}

/* ===== 플로팅 버튼 ===== */
.fab {
  position: fixed;
  right: 18px;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  border: none;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 3px 10px rgba(0,0,0,.25);
  z-index: 10;
}
.fab svg { width: 27px; height: 27px; }
.fab-toggle { bottom: calc(168px + env(safe-area-inset-bottom)); background: var(--pink); }
.fab-bookmark { bottom: calc(96px + env(safe-area-inset-bottom)); background: var(--purple); }
.fab-bookmark.active #bookmark-star { fill: #ffd944; stroke: #ffd944; }

/* ===== 하단 내비 ===== */
.nav-circle {
  position: fixed;
  bottom: calc(20px + env(safe-area-inset-bottom));
  width: 62px;
  height: 62px;
  border-radius: 50%;
  border: none;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 3px 10px rgba(0,0,0,.25);
  z-index: 10;
}
.nav-circle svg { width: 28px; height: 28px; }
.nav-prev { left: 18px; background: var(--prev-gray); }
.nav-next { right: 18px; background: var(--navy-dark); }
.nav-circle:disabled { opacity: .35; }

/* ===== 글자 크기 슬라이더 ===== */
.font-slider-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 96px calc(16px + env(safe-area-inset-bottom));
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(6px);
  z-index: 9;
}
.font-label {
  color: var(--navy);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
}
.font-label small { font-size: 16px; font-weight: 700; }
#font-slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  border-radius: 2px;
  background: var(--blue);
  outline: none;
}
#font-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--blue);
}

/* ===== 드로어 ===== */
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(160,170,190,.45);
  z-index: 20;
}
.drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(78%, 340px);
  background: #f6f7f9;
  z-index: 21;
  transform: translateX(100%);
  transition: transform .25s ease;
  display: flex;
  flex-direction: column;
  box-shadow: -4px 0 18px rgba(0,0,0,.18);
}
.drawer.open { transform: translateX(0); }
.drawer-head {
  background: var(--navy);
  padding: calc(40px + env(safe-area-inset-top)) 28px 36px;
}
.drawer-head .logo { height: 30px; }
.drawer-menu { display: flex; flex-direction: column; background: #fff; }
.drawer-menu button {
  display: flex;
  align-items: baseline;
  gap: 8px;
  background: #fff;
  border: none;
  border-bottom: 1px solid var(--divider);
  padding: 24px 28px;
  font-size: 22px;
  cursor: pointer;
  text-align: left;
}
.drawer-menu button strong { font-weight: 700; color: #1f2937; }
.drawer-menu button span { color: #9aa0a8; font-size: 19px; font-weight: 400; }
.drawer-menu button:active { background: #eef0f3; }

/* ===== 서브 화면 (즐겨찾기/히스토리/소개/설정) ===== */
.sub-area { padding-top: 4px; }
.about-box { padding: 28px 8px; line-height: 1.9; font-size: 17px; }
.about-box h2 { color: var(--navy); margin-bottom: 12px; font-size: 22px; }
.about-box p { margin-bottom: 14px; color: #374151; }

.settings-list { list-style: none; }
.settings-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 20px 4px;
  border-bottom: 1px solid var(--divider);
  font-size: 18px;
}
.settings-list .danger { color: #dc2626; }
.settings-list button {
  border: 1px solid var(--divider);
  background: #fff;
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 15px;
  cursor: pointer;
  color: #374151;
}

/* 즐겨찾기 항목의 별 제거 버튼 */
.song-list .row-action {
  margin-left: auto;
  background: none;
  border: none;
  color: #c4a000;
  cursor: pointer;
  padding: 6px;
  flex-shrink: 0;
}
.song-list .row-action svg { width: 24px; height: 24px; }

/* 큰 화면(아이패드 등)에서도 전체 폭 사용. 가사·목록만 읽기 좋게 가운데 정렬 */
@media (min-width: 700px) {
  .lyrics-text { max-width: 700px; margin: 0 auto; }
  .list-area > .range-label, .song-list, .empty-msg, .about-box, .settings-list {
    max-width: 760px; margin-left: auto; margin-right: auto;
  }
  .search-box { max-width: 760px; margin: 0 auto; }
}