*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: #f4f3ff; color: #1a1a2e; min-height: 100vh; }

.navbar { background: #fff; border-bottom: 1px solid #e5e3f7; padding: 0 1.5rem; height: 56px; display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; z-index: 100; }
.nav-brand { font-size: 1.1rem; font-weight: 600; color: #534AB7; }
.nav-right { display: flex; align-items: center; gap: 12px; }
.nav-user { font-size: 13px; color: #666; }

.container { max-width: 780px; margin: 0 auto; padding: 1.5rem 1rem; }

.card { background: #fff; border: 1px solid #e5e3f7; border-radius: 12px; padding: 1.25rem 1.5rem; margin-bottom: 1.25rem; }
.form-card h2 { font-size: 1rem; font-weight: 600; color: #534AB7; margin-bottom: 1rem; }

.form-row { display: flex; gap: 12px; flex-wrap: wrap; }
.form-row .form-group { flex: 1; min-width: 160px; }
.form-group { margin-bottom: 12px; }
.form-group label { display: block; font-size: 13px; font-weight: 500; color: #555; margin-bottom: 5px; }
.form-group input { width: 100%; padding: 9px 12px; border: 1px solid #d4d0f0; border-radius: 8px; font-size: 14px; background: #faf9ff; color: #1a1a2e; outline: none; transition: border-color .2s; }
.form-group input:focus { border-color: #7F77DD; background: #fff; }
.optional { font-weight: 400; color: #aaa; }
.form-actions { display: flex; gap: 8px; margin-top: 4px; }

.btn { display: inline-block; padding: 8px 18px; border-radius: 8px; border: 1px solid #d4d0f0; background: #fff; color: #534AB7; font-size: 14px; font-weight: 500; cursor: pointer; text-decoration: none; transition: background .15s, border-color .15s; }
.btn:hover { background: #f0eeff; border-color: #AFA9EC; }
.btn-primary { background: #534AB7; color: #fff; border-color: #534AB7; }
.btn-primary:hover { background: #3C3489; border-color: #3C3489; }
.btn-sm { font-size: 13px; padding: 5px 12px; }
.btn-full { width: 100%; text-align: center; display: block; }

.alert { padding: 10px 14px; border-radius: 8px; font-size: 14px; }
.alert-error   { background: #fff0f0; color: #A32D2D; border: 1px solid #f0c8c8; }
.alert-success { background: #f0fff8; color: #0F6E56; border: 1px solid #9FE1CB; }

/* Toolbar */
.toolbar { margin-bottom: .75rem; }
.filters { display: flex; gap: 8px; margin-bottom: 10px; flex-wrap: wrap; }
.filters input { flex: 1; min-width: 160px; padding: 9px 12px; border: 1px solid #d4d0f0; border-radius: 8px; font-size: 14px; background: #fff; color: #1a1a2e; outline: none; }
.filters input:focus { border-color: #7F77DD; }
.filters select { padding: 9px 12px; border: 1px solid #d4d0f0; border-radius: 8px; font-size: 14px; background: #fff; color: #534AB7; outline: none; cursor: pointer; font-weight: 500; }
.filters select:focus { border-color: #7F77DD; }
.tag-row { display: flex; flex-wrap: wrap; gap: 6px; }
.tag-btn { font-size: 12px; padding: 4px 12px; border-radius: 99px; border: 1px solid #d4d0f0; background: #fff; color: #666; cursor: pointer; transition: all .15s; }
.tag-btn:hover { border-color: #AFA9EC; color: #534AB7; }
.tag-btn.active { background: #EEEDFE; color: #534AB7; border-color: #AFA9EC; font-weight: 500; }

/* Bulk bar */
.bulk-bar { background: #534AB7; color: #fff; border-radius: 10px; padding: 10px 16px; margin-bottom: 12px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.bulk-bar span { font-size: 14px; font-weight: 500; flex: 1; }
.bulk-bar .btn { background: #fff; color: #534AB7; border-color: #fff; }
.bulk-bar .btn-primary { background: #3C3489; color: #fff; border-color: #3C3489; }
.bulk-bar .btn-primary:hover { background: #26215C; }

.count-info { font-size: 12px; color: #aaa; margin-bottom: 10px; }

/* Song cards */
.song-card { background: #fff; border: 1px solid #e5e3f7; border-radius: 12px; padding: .85rem 1rem; margin-bottom: 10px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; transition: border-color .15s; }
.song-card:hover { border-color: #AFA9EC; }
.song-card.selected { border-color: #7F77DD; background: #faf9ff; }
.song-check { width: 17px; height: 17px; accent-color: #534AB7; cursor: pointer; flex-shrink: 0; }
.song-icon { width: 38px; height: 38px; min-width: 38px; border-radius: 50%; background: #EEEDFE; display: flex; align-items: center; justify-content: center; font-size: 17px; }
.song-info { flex: 1; min-width: 0; }
.song-title { font-size: 14px; font-weight: 600; color: #1a1a2e; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.song-url { font-size: 12px; color: #aaa; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-top: 2px; }
.song-meta { display: flex; gap: 6px; margin-top: 4px; align-items: center; flex-wrap: wrap; }
.song-tag { font-size: 11px; background: #E1F5EE; color: #0F6E56; padding: 2px 8px; border-radius: 99px; font-weight: 500; }
.song-notes { font-size: 11px; color: #888; }
.play-count { font-size: 11px; color: #AFA9EC; font-weight: 500; }
.song-actions { display: flex; gap: 5px; flex-wrap: wrap; }

.btn-play { font-size: 13px; padding: 5px 11px; border-radius: 8px; background: #534AB7; color: #fff; border: none; cursor: pointer; font-weight: 600; }
.btn-play:hover { background: #3C3489; }
.btn-open { font-size: 12px; padding: 5px 12px; border-radius: 8px; background: #534AB7; color: #fff; border: none; cursor: pointer; font-weight: 500; }
.btn-open:hover { background: #3C3489; }
.btn-copy { font-size: 13px; padding: 5px 10px; border-radius: 8px; background: #f0eeff; color: #534AB7; border: 1px solid #d4d0f0; cursor: pointer; }
.btn-copy:hover { background: #EEEDFE; }
.btn-edit { font-size: 12px; padding: 5px 10px; border-radius: 8px; background: #f0eeff; color: #534AB7; border: 1px solid #d4d0f0; cursor: pointer; }
.btn-edit:hover { background: #EEEDFE; }
.btn-del { font-size: 12px; padding: 5px 10px; border-radius: 8px; background: #fff; color: #bbb; border: 1px solid #eee; cursor: pointer; }
.btn-del:hover { color: #A32D2D; border-color: #f0c8c8; background: #fff0f0; }
.embed-wrap { width: 100%; }

.empty { text-align: center; color: #bbb; font-size: 14px; padding: 3rem 0; }
.empty-icon { font-size: 2.5rem; margin-bottom: .5rem; }

/* Auth */
.auth-page { background: #f4f3ff; display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.auth-card { background: #fff; border: 1px solid #e5e3f7; border-radius: 16px; padding: 2rem 2rem 1.75rem; width: 100%; max-width: 380px; }
.auth-logo { font-size: 2rem; text-align: center; margin-bottom: .5rem; }
.auth-card h1 { font-size: 1.3rem; font-weight: 700; text-align: center; color: #534AB7; margin-bottom: .25rem; }
.auth-sub { font-size: 13px; color: #999; text-align: center; margin-bottom: 1.5rem; }
.auth-link { font-size: 13px; color: #999; text-align: center; margin-top: 1rem; }
.auth-link a { color: #534AB7; text-decoration: none; font-weight: 500; }

@media (max-width: 520px) {
  .song-actions { gap: 4px; }
  .btn-open, .btn-edit, .btn-del, .btn-play, .btn-copy { font-size: 11px; padding: 4px 8px; }
}