/* ZVONKO-style dark theme. Mobile-first; desktop gets a sticky right checklist. */
:root {
  --bg: #1b1b1b;
  --card: #242424;
  --input: #1f1f1f;
  --border: #333;
  --text: #e6e6e6;
  --muted: #8a8a8a;
  --accent: #4fd8c8;
  --danger: #ff6b6b;
  --r-card: 8px;
  --r-input: 6px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg); color: var(--text);
  font-family: var(--font); font-size: 15px; line-height: 1.4;
}
button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }

.app { max-width: 1040px; margin: 0 auto; padding: 16px 12px 0; }
.page-title { margin: 4px 0 14px; font-size: 24px; font-weight: 700; color: #fff; }

/* Tabs */
.tabbar { display: flex; gap: 8px; margin-bottom: 10px; max-width: 720px; }
.tab-btn {
  flex: 1 1 0; min-width: 0; padding: 11px 6px; background: var(--card);
  border: 1px solid transparent; border-radius: var(--r-input);
  cursor: pointer; text-align: center; white-space: nowrap;
}
.tab-btn.active { border-color: var(--accent); color: #fff; }

/* Checklist: strip on mobile, sticky column on desktop */
.checklist-strip {
  display: flex; gap: 8px; overflow-x: auto; padding: 2px 0 10px;
  scrollbar-width: none; max-width: 720px;
}
.checklist-strip::-webkit-scrollbar { display: none; }
.checklist-strip .cl-item {
  flex: 0 0 auto; padding: 6px 10px; background: var(--card);
  border: 1px solid var(--border); border-radius: 999px; font-size: 13px;
}
.checklist-side { display: none; }
.cl-item { display: flex; align-items: center; gap: 8px; cursor: pointer; color: var(--text); }
.cl-box {
  width: 16px; height: 16px; flex: 0 0 16px; border-radius: 4px;
  background: #3a3a3a; display: inline-flex; align-items: center; justify-content: center;
  font-size: 11px; line-height: 1; color: #0b2b27;
}
.cl-item.done .cl-box { background: var(--accent); }

.layout { display: block; }
.content { min-width: 0; max-width: 720px; }

/* Cards */
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--r-card);
  padding: 16px; margin-bottom: 12px; scroll-margin-top: 12px;
}
.card-title { margin: 0; font-size: 19px; font-weight: 700; color: #fff; }
.card-sub { margin-top: 2px; font-size: 13px; color: var(--muted); }
.card-body { margin-top: 14px; }
.card-body:empty { display: none; }
.placeholder { color: var(--muted); font-size: 13px; }

/* Fields */
.field { margin-bottom: 14px; }
.field:last-child { margin-bottom: 0; }
.field-label { display: block; margin-bottom: 6px; font-size: 12px; color: var(--muted); }
.help {
  display: inline-flex; align-items: center; justify-content: center; margin-left: 6px;
  width: 14px; height: 14px; border: 1px solid var(--muted); border-radius: 50%;
  font-size: 10px; cursor: help;
}
.input, .select {
  width: 100%; padding: 10px 12px; background: var(--input);
  border: 1px solid var(--border); border-radius: var(--r-input); outline: none;
}
.input:focus, .select:focus { border-color: var(--accent); }
.textarea { resize: vertical; min-height: 90px; }
.select {
  appearance: none; -webkit-appearance: none; padding-right: 30px; cursor: pointer;
  background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%),
                    linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 17px) 50%, calc(100% - 12px) 50%;
  background-size: 5px 5px; background-repeat: no-repeat;
}
.select option { background: var(--card); color: var(--text); }

/* Custom radio / checkbox */
.radio-group { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.radio, .checkbox { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; position: relative; }
.native { position: absolute; opacity: 0; width: 0; height: 0; }
.mark {
  width: 18px; height: 18px; flex: 0 0 18px; background: var(--input);
  border: 1px solid #555; display: inline-flex; align-items: center; justify-content: center;
}
.radio-mark { border-radius: 50%; }
.box { border-radius: 4px; }
.native:checked + .radio-mark { border-color: var(--accent); }
.native:checked + .radio-mark::after { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
.native:checked + .box { background: var(--accent); border-color: var(--accent); }
.native:checked + .box::after { content: "✓"; color: #0b2b27; font-size: 12px; font-weight: 700; }
.native:focus-visible + .mark { outline: 2px solid var(--accent); outline-offset: 2px; }

.link {
  background: none; border: 0; padding: 4px 0; color: var(--accent); cursor: pointer;
  text-decoration: none;
}
.link:hover { text-decoration: underline; }

/* Chips */
.chip {
  display: inline-flex; align-items: center; gap: 4px; padding: 3px 4px 3px 10px;
  background: #2f2f2f; border: 1px solid var(--border); border-radius: 999px; font-size: 13px;
}
.chip-x { background: none; border: 0; color: var(--muted); cursor: pointer; padding: 0 6px; font-size: 16px; line-height: 1; }
.chip-x:hover { color: var(--danger); }

/* Persons */
.person-list { display: flex; flex-direction: column; gap: 10px; }
.person-row { padding: 10px; background: var(--input); border: 1px solid var(--border); border-radius: var(--r-input); }
.person-row.dragging { opacity: .5; }
.person-head { display: flex; align-items: center; gap: 8px; }
.person-name { flex: 1; min-width: 0; background: var(--bg); }
.drag-handle { color: var(--muted); cursor: grab; padding: 0 2px; font-size: 18px; }
.row-btns { display: inline-flex; gap: 2px; }
.icon-btn { background: none; border: 0; cursor: pointer; padding: 6px; color: var(--muted); border-radius: 4px; }
.icon-btn:hover { color: var(--text); }
.icon-btn.danger:hover { color: var(--danger); }
.role-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; align-items: center; }
.role-add { width: auto; padding: 4px 26px 4px 10px; font-size: 13px; border-radius: 999px; }

/* Collapsible */
.collapsible { background: var(--card); border: 1px solid var(--border); border-radius: var(--r-card); margin-bottom: 10px; }
.coll-head { display: flex; align-items: center; gap: 10px; padding: 12px; cursor: pointer; }
.coll-left { flex: 1; min-width: 0; display: flex; align-items: center; gap: 8px; }
.coll-right { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; }
.arrow { color: var(--muted); transition: transform .15s; }
.collapsible.closed .arrow { transform: rotate(-90deg); }
.coll-body { padding: 0 12px 14px; }
.collapsible.closed .coll-body { display: none; }
.badge { padding: 1px 6px; border: 1px solid var(--danger); color: var(--danger); border-radius: 4px; font-size: 11px; }

/* DropZone */
.dropzone {
  border: 1px dashed #555; border-radius: var(--r-card); padding: 22px 14px;
  text-align: center; cursor: pointer; background: var(--input);
}
.dropzone:hover, .dropzone.drag { border-color: var(--accent); }
.dz-text { color: var(--text); }
.dz-hint { margin-top: 4px; font-size: 12px; color: var(--muted); }
.dz-hint:empty { display: none; }
.progress { height: 4px; margin-top: 12px; background: #333; border-radius: 2px; overflow: hidden; display: none; }
.progress.active { display: block; }
.progress-bar { height: 100%; width: 0; background: var(--accent); transition: width .15s; }

/* Toast + validation highlight */
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px); opacity: 0;
  max-width: 90vw; padding: 10px 16px; background: #333; color: #fff; border-radius: var(--r-input);
  border: 1px solid var(--border); transition: opacity .25s, transform .25s; z-index: 100; pointer-events: none;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.highlight { outline: 1px solid var(--danger); animation: shake .4s; }
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

/* Hints, disabled controls */
.hint { margin-top: 6px; font-size: 12px; color: var(--muted); }
.checkbox.disabled { opacity: .45; cursor: not-allowed; }
.danger-link { color: var(--danger); }
.type-box { display: flex; flex-direction: column; gap: 10px; align-items: flex-start; }
.type-box .hint { margin-top: 0; }

/* Cover */
.cover-row { display: flex; gap: 12px; margin-top: 10px; align-items: stretch; }
.cover-zone { flex: 1; min-width: 0; }
.dropzone.busy { pointer-events: none; opacity: .7; }
.cover-preview { flex: 0 0 112px; display: flex; flex-direction: column; gap: 6px; }
.cover-thumb {
  width: 112px; height: 112px; border-radius: var(--r-input); overflow: hidden; background: var(--input);
  border: 1px solid var(--border); display: flex; align-items: center; justify-content: center;
}
.cover-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.cover-ok { color: var(--accent); font-size: 28px; }
.cover-links { display: flex; gap: 12px; font-size: 13px; }

/* Calendar */
.date-input { cursor: pointer; max-width: 220px; }
.cal-pop:empty { display: none; }
.cal-pop { margin: -4px 0 12px; }
.calendar {
  max-width: 340px; padding: 10px; background: var(--input);
  border: 1px solid var(--border); border-radius: var(--r-card);
}
.cal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.cal-title { font-weight: 600; color: #fff; }
.cal-nav { background: none; border: 0; color: var(--accent); cursor: pointer; padding: 6px 12px; }
.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 3px; }
.cal-dow { text-align: center; font-size: 11px; color: var(--muted); padding: 4px 0; }
.cal-day {
  background: var(--card); border: 1px solid transparent; border-radius: 4px; cursor: pointer;
  padding: 7px 0; font-size: 13px; text-align: center; white-space: nowrap;
}
.cal-day:hover { border-color: var(--accent); }
.cal-day.promo { font-size: 11px; color: #fff; }
.cal-day.today { border-color: #555; }
.cal-day.selected { background: var(--accent); color: #0b2b27; font-weight: 700; }
.cal-legend { margin-top: 8px; font-size: 12px; color: var(--muted); }
/* Tracks tab */
.warn { color: #c9a227; }
.up-rows { margin-top: 10px; display: flex; flex-direction: column; gap: 8px; }
.up-rows:empty { display: none; }
.up-row { padding: 8px 10px; background: var(--input); border: 1px solid var(--border); border-radius: var(--r-input); }
.up-row.err { border-color: var(--danger); }
.up-top { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.up-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.up-status { color: var(--muted); flex: 0 1 auto; }
.up-row.err .up-status { color: var(--danger); }
.up-row .progress { margin-top: 8px; }
.track-card { background: var(--input); }
.trk-num { color: var(--muted); flex: 0 0 auto; }
.trk-title { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: #fff; }
.trk-dur { flex: 0 0 auto; }
.coll-right { gap: 2px; }
.coll-right .trk-dur { margin-right: 4px; }
.icon-btn:disabled { opacity: .3; cursor: default; }
.sub-title { margin: 18px 0 10px; font-size: 15px; font-weight: 600; color: #fff; }
.check-col { display: flex; flex-direction: column; gap: 10px; align-items: flex-start; }
.short-input { max-width: 160px; }
.input.disabled, .input:disabled { opacity: .45; cursor: not-allowed; }
.counter { text-align: right; margin-top: -8px; }
.track-card .person-row { background: var(--card); }

/* Player */
.player { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.player-btn {
  flex: 0 0 36px; width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--accent);
  background: none; color: var(--accent); cursor: pointer; font-size: 13px; padding: 0;
}
.player-line { flex: 1; min-width: 0; accent-color: var(--accent); height: 4px; }
.player-time { flex: 0 0 auto; font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; }
.player-note { font-size: 12px; color: var(--muted); }

/* Buttons + modal */
.btn {
  padding: 12px 16px; border-radius: var(--r-input); border: 1px solid var(--border);
  background: var(--card); cursor: pointer; font-weight: 600;
}
.btn-primary { background: var(--accent); border-color: var(--accent); color: #0b2b27; }
.btn-ghost { background: none; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-block { display: block; width: 100%; }
.modal-back {
  position: fixed; inset: 0; background: rgba(0, 0, 0, .6); z-index: 200;
  display: flex; align-items: center; justify-content: center; padding: 16px;
}
.modal { width: 100%; max-width: 360px; background: var(--card); border: 1px solid var(--border); border-radius: var(--r-card); padding: 18px; }
.modal-text { margin-bottom: 16px; }
.modal-btns { display: flex; gap: 10px; justify-content: flex-end; }

.track-card .person-list + .hint { margin-bottom: 14px; }

/* Check tab */
.check-notice:empty { display: none; }
.check-notice { margin-bottom: 12px; }
.notice-red { color: var(--danger); font-size: 13px; }
.error-block {
  padding: 12px; margin-bottom: 10px; border: 1px solid var(--danger); border-radius: var(--r-card);
  color: var(--danger); background: rgba(255, 107, 107, .08); white-space: pre-wrap;
}
.problem-list { margin-top: 8px; display: flex; flex-direction: column; gap: 4px; }
.problem-item {
  text-align: left; background: none; border: 0; padding: 4px 0; color: var(--danger);
  cursor: pointer; font-size: 13px; text-decoration: underline; text-decoration-color: rgba(255, 107, 107, .4);
}
.edit-link { font-size: 13px; margin: -8px 0 10px; display: inline-block; }
.sum-head { display: flex; gap: 14px; align-items: flex-start; }
.sum-head .cover-thumb { flex: 0 0 96px; width: 96px; height: 96px; }
.sum-rows { flex: 1; min-width: 0; }
.sum-row { display: flex; gap: 10px; padding: 4px 0; font-size: 14px; }
.sum-label { flex: 0 0 42%; max-width: 190px; color: var(--muted); font-size: 13px; }
.sum-value { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.sum-value.empty { color: var(--danger); font-size: 13px; }
.sum-persons { display: flex; flex-direction: column; gap: 8px; }
.sum-person { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.sum-person .chip { padding: 3px 10px; }
.sum-person-name { margin-right: 4px; }
.sum-bar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.sum-bar .edit-link { margin: 0; }
.lyrics-text { white-space: pre-wrap; overflow-wrap: anywhere; font-size: 14px; margin-bottom: 4px; }
.track-card .edit-link { margin: 12px 0 0; }
.submit-btn { margin-top: 4px; padding: 14px; font-size: 16px; }
.success-screen {
  position: fixed; inset: 0; z-index: 300; background: var(--bg); display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 12px; padding: 24px; text-align: center;
}
.success-mark {
  width: 72px; height: 72px; border-radius: 50%; background: var(--accent); color: #0b2b27;
  display: flex; align-items: center; justify-content: center; font-size: 36px; font-weight: 700;
}
.success-title { font-size: 20px; font-weight: 700; color: #fff; }
.success-id { color: var(--muted); font-size: 13px; margin-bottom: 8px; }

.bottom-space { height: 40px; }

/* Desktop */
@media (min-width: 900px) {
  .layout { display: flex; gap: 20px; align-items: flex-start; }
  .content { flex: 1 1 720px; }
  .checklist-strip { display: none; }
  .checklist-side {
    display: flex; flex-direction: column; gap: 12px; flex: 0 0 240px;
    position: sticky; top: 16px; padding: 16px;
    background: var(--card); border: 1px solid var(--border); border-radius: var(--r-card);
  }
}