:root {
  --lavender: #8F6FE2;
  --lavender-deep: #7351C6;
  --lavender-soft: #CAB4F3;
  --bg: #F6F3FD;
  --card: #FFFFFF;
  --sage: #6F9867;
  --honey: #CF9446;
  --rose: #CA7382;
  --dust: #8B8294;
  --text: #1c1b24;
  --secondary: #6c6677;
  --hairline: rgba(60, 40, 100, 0.10);
  --radius: 16px;
  --shadow: 0 6px 20px rgba(98, 70, 160, 0.12);
}

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

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-rounded, "SF Pro Rounded", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  padding-bottom: env(safe-area-inset-bottom);
}

svg { stroke: currentColor; }

/* Header */
.app-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(246, 243, 253, 0.86);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  padding: calc(env(safe-area-inset-top) + 12px) 16px 10px;
  border-bottom: 1px solid var(--hairline);
}
.app-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.app-title {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0;
  background: linear-gradient(120deg, var(--lavender-deep), var(--lavender));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.header-actions { display: flex; gap: 6px; flex-shrink: 0; }
.icon-btn {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border: none; border-radius: 50%;
  background: rgba(143, 111, 226, 0.12);
  color: var(--lavender-deep);
  cursor: pointer;
}
.icon-btn:active { background: rgba(143, 111, 226, 0.24); }
.icon-btn svg { fill: none; stroke: currentColor; }
#add-btn svg { stroke: var(--lavender-deep); }
#menu-btn svg { fill: var(--lavender-deep); stroke: none; }

/* Search */
.search-wrap {
  margin-top: 12px;
  position: relative;
  display: flex;
  align-items: center;
}
.search-icon {
  position: absolute; left: 12px;
  color: var(--secondary); fill: none;
}
#search {
  width: 100%;
  font: inherit;
  font-size: 16px;
  padding: 11px 14px 11px 38px;
  border: none;
  border-radius: 12px;
  background: rgba(118, 100, 160, 0.10);
  color: var(--text);
}
#search:focus { outline: 2px solid var(--lavender-soft); }
#search::placeholder { color: var(--secondary); }

/* Filters */
.filter-row {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  margin-top: 12px;
  padding-bottom: 2px;
  scrollbar-width: none;
}
.filter-row::-webkit-scrollbar { display: none; }
.chip {
  flex-shrink: 0;
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 13px;
  border-radius: 999px;
  border: 1px solid var(--hairline);
  background: var(--card);
  color: var(--secondary);
  cursor: pointer;
  white-space: nowrap;
}
.chip.active {
  background: var(--lavender);
  border-color: var(--lavender);
  color: #fff;
}

/* List */
.list {
  max-width: 640px;
  margin: 0 auto;
  padding: 12px 12px 4px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.song-count {
  font-size: 13px;
  color: var(--secondary);
  padding: 2px 6px 6px;
}
.row {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--card);
  border-radius: var(--radius);
  padding: 10px 12px;
  box-shadow: var(--shadow);
  cursor: pointer;
  border: 1px solid transparent;
}
.row:active { border-color: var(--lavender-soft); }
.art {
  width: 54px; height: 54px;
  border-radius: 10px;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--lavender-soft), var(--lavender));
  display: grid; place-items: center;
  overflow: hidden;
  position: relative;
}
.art img { width: 100%; height: 100%; object-fit: cover; }
.art .note { width: 22px; height: 22px; fill: #fff; opacity: 0.9; stroke: none; }
.row-main { min-width: 0; flex: 1; }
.row-title {
  font-size: 16px; font-weight: 600;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.row-artist {
  font-size: 13px; color: var(--secondary);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  margin-top: 1px;
}
.badges { display: flex; gap: 6px; margin-top: 6px; flex-wrap: wrap; }
.badge {
  font-size: 11px; font-weight: 700;
  padding: 2px 9px; border-radius: 999px;
}
.chevron { color: var(--lavender-soft); flex-shrink: 0; }

.empty {
  text-align: center;
  color: var(--secondary);
  padding: 64px 24px;
}
.empty .note { width: 44px; height: 44px; fill: var(--lavender-soft); stroke: none; }
.empty h2 { margin: 14px 0 6px; color: var(--text); }

/* Buttons */
.btn {
  font: inherit; font-size: 16px; font-weight: 600;
  border: none; border-radius: 13px;
  padding: 13px 16px;
  cursor: pointer;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  box-sizing: border-box;
}
.btn-primary { background: var(--lavender); color: #fff; }
.btn-primary:active { background: var(--lavender-deep); }
.btn-spotify { background: #1DB954; color: #fff; }
.btn-secondary { background: rgba(143, 111, 226, 0.12); color: var(--lavender-deep); }
.btn-danger { background: rgba(202, 115, 130, 0.14); color: var(--rose); }

/* Overlays / sheets */
.overlay {
  position: fixed; inset: 0;
  background: rgba(30, 20, 50, 0.4);
  display: flex; align-items: flex-end; justify-content: center;
  z-index: 100;
  animation: fade 0.2s ease;
}
.overlay.hidden { display: none; }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
.sheet {
  background: var(--bg);
  width: 100%;
  max-width: 640px;
  border-radius: 22px 22px 0 0;
  padding: 18px 18px calc(env(safe-area-inset-bottom) + 18px);
  box-shadow: 0 -10px 40px rgba(40, 20, 70, 0.25);
  animation: slideup 0.26s cubic-bezier(0.2, 0.8, 0.2, 1);
  max-height: 92vh;
  overflow-y: auto;
}
@keyframes slideup { from { transform: translateY(100%); } to { transform: translateY(0); } }
.sheet h3 { margin: 4px 0 14px; }
.sheet-row {
  display: block; width: 100%; text-align: left;
  font: inherit; font-size: 16px;
  padding: 14px 12px; margin-bottom: 8px;
  border: none; border-radius: 12px;
  background: var(--card); color: var(--text);
  cursor: pointer;
}
.sheet-cancel { color: var(--secondary); text-align: center; font-weight: 600; }

/* Detail sheet */
.detail-head { display: flex; gap: 14px; align-items: center; margin-bottom: 18px; }
.detail-art {
  width: 76px; height: 76px; border-radius: 14px;
  background: linear-gradient(135deg, var(--lavender-soft), var(--lavender));
  display: grid; place-items: center; overflow: hidden; flex-shrink: 0;
}
.detail-art img { width: 100%; height: 100%; object-fit: cover; }
.detail-art .note { width: 30px; height: 30px; fill: #fff; stroke: none; }
.detail-title { font-size: 20px; font-weight: 700; line-height: 1.2; }
.detail-artist { color: var(--secondary); margin-top: 3px; }
.field-label { font-size: 13px; font-weight: 700; color: var(--secondary); margin: 16px 0 8px; text-transform: uppercase; letter-spacing: 0.03em; }
.seg { display: flex; gap: 6px; }
.seg button {
  flex: 1; font: inherit; font-size: 14px; font-weight: 600;
  padding: 9px 4px; border-radius: 10px; cursor: pointer;
  border: 1px solid var(--hairline); background: var(--card); color: var(--secondary);
}
.seg button.on { color: #fff; border-color: transparent; }
.detail-actions { display: flex; flex-direction: column; gap: 10px; margin-top: 22px; }
.text-input {
  width: 100%; font: inherit; font-size: 16px;
  padding: 12px 14px; border-radius: 12px;
  border: 1px solid var(--hairline); background: var(--card); color: var(--text);
}
.text-input:focus { outline: 2px solid var(--lavender-soft); }

/* Birthday */
.birthday-card {
  position: relative;
  background: var(--card);
  margin: auto;
  width: calc(100% - 48px);
  max-width: 380px;
  border-radius: 24px;
  padding: 30px 24px 24px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(40, 20, 70, 0.35);
  animation: pop 0.34s cubic-bezier(0.2, 0.9, 0.3, 1.2);
  overflow: hidden;
}
@keyframes pop { from { transform: scale(0.9); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.birthday-card h2 {
  margin: 12px 0 8px; font-size: 26px;
  background: linear-gradient(120deg, var(--lavender-deep), var(--rose));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.birthday-card p { color: var(--secondary); margin: 0 0 20px; font-size: 15px; }
.birthday-close {
  position: absolute; top: 12px; right: 14px;
  width: 32px; height: 32px; border: none; border-radius: 50%;
  background: rgba(118, 100, 160, 0.12); color: var(--secondary);
  font-size: 22px; line-height: 1; cursor: pointer;
}
.birthday-emoji { display: grid; place-items: center; }
.confetti {
  position: absolute; inset: 0 0 auto 0; height: 6px;
  background: linear-gradient(90deg, var(--lavender), var(--rose), var(--honey), var(--sage), var(--lavender));
}

/* Toast */
.toast {
  position: fixed; left: 50%; bottom: calc(env(safe-area-inset-bottom) + 24px);
  transform: translateX(-50%);
  background: rgba(28, 27, 36, 0.94); color: #fff;
  padding: 11px 18px; border-radius: 12px;
  font-size: 14px; z-index: 200;
  max-width: 86%; text-align: center;
  animation: fade 0.2s ease;
}
.toast.hidden { display: none; }

.footer-note {
  max-width: 640px;
  margin: 6px auto 28px;
  padding: 0 24px;
  text-align: center;
  font-size: 12px;
  color: var(--secondary);
}