/* ===== Escala Fibonacci (sistema obrigatório) ===== */
:root {
  --fib-1: 0.25rem;
  --fib-2: 0.5rem;
  --fib-3: 0.75rem;
  --fib-5: 1rem;
  --fib-8: 1.5rem;
  --fib-13: 2rem;
  --fib-21: 3rem;
  --fib-34: 4rem;

  /* Cores — tema escuro de editor */
  --bg: #0f1115;
  --bg-2: #171a21;
  --bg-3: #1f242e;
  --bg-4: #262d3a;
  --border: #2a313d;
  --text: #e7ebf2;
  --muted: #8b94a3;
  --accent: #5b8cff;
  --accent-2: #3f6fe0;
  --success: #36c08a;
  --danger: #e0556b;
  --warn: #e0a23f;

  --radius-input: var(--fib-3);
  --radius-card: var(--fib-5);
  --shadow: 0 var(--fib-1) var(--fib-8) rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
  line-height: 1.5;
  overflow-x: hidden;
}

/* ===== Topbar ===== */
.topbar {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--fib-2) var(--fib-5);
  padding: var(--fib-5) var(--fib-13);
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 20;
}
.brand { font-size: 1.25rem; margin: 0; font-weight: 700; }
.brand-sub { color: var(--muted); font-size: 0.85rem; }

/* ===== Layout principal (clipes | editor) ===== */
.app {
  display: grid;
  grid-template-columns: 16rem minmax(0, 1fr);
  gap: var(--fib-8);
  padding: var(--fib-13);
  align-items: start;
}
.app > * { min-width: 0; }
.panel {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: var(--fib-8);
  box-shadow: var(--shadow);
  min-width: 0;
}
.panel-title {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 var(--fib-5);
  color: var(--text);
}

/* ===== Dropzone ===== */
.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius-card);
  padding: var(--fib-13) var(--fib-5);
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, transform 0.15s;
}
.dropzone:hover, .dropzone.drag {
  border-color: var(--accent);
  background: rgba(91, 140, 255, 0.07);
  transform: translateY(-1px);
}
.dz-icon { font-size: 1.5rem; margin: 0 0 var(--fib-2); color: var(--accent); }
.dz-text { margin: 0; font-size: 0.85rem; }
.dz-text span { color: var(--muted); }

/* ===== Lista de clipes ===== */
.clip-list { list-style: none; padding: 0; margin: var(--fib-5) 0 0; display: flex; flex-direction: column; gap: var(--fib-2); }
.clip-item {
  display: flex; align-items: center; gap: var(--fib-3);
  padding: var(--fib-3);
  border-radius: var(--radius-input);
  background: var(--bg-3);
  border: 1px solid transparent;
  cursor: pointer;
  font-size: 0.85rem;
  transition: border-color 0.15s, background 0.15s;
}
.clip-item:hover { background: var(--bg-4); }
.clip-item.active { border-color: var(--accent); }
.clip-item .clip-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.clip-item .clip-dur { color: var(--muted); font-size: 0.7rem; }
.clip-item .clip-del { color: var(--muted); cursor: pointer; }
.clip-item .clip-del:hover { color: var(--danger); }
.clips-panel .btn { margin-top: var(--fib-5); }

/* ===== Editor: vídeo (stage) + controles (rail) ===== */
.editor-panel { padding: var(--fib-8); }
.editor-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 22rem;
  gap: var(--fib-8);
  align-items: start;
}
.stage { min-width: 0; }
.player {
  display: block;
  max-width: 100%;
  max-height: 60vh;
  margin: 0 auto;
  border-radius: var(--radius-card);
  background: #000;
}
.stage-tip { color: var(--muted); font-size: 0.7rem; margin: var(--fib-5) 0 0; text-align: center; }

/* ===== Timeline interativa (estilo CapCut) ===== */
.tl-wrap { margin-top: var(--fib-5); user-select: none; }
.tl-readout { display: flex; justify-content: space-between; align-items: center; color: var(--muted); font-size: 0.7rem; margin-bottom: var(--fib-2); font-variant-numeric: tabular-nums; }
.tl-readout #curLabel { color: var(--accent); font-weight: 600; }
.tl-mid { color: var(--muted); }

/* régua de tempo */
.tl-ruler { position: relative; height: var(--fib-8); }
.tl-tick { position: absolute; top: 0; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; color: var(--muted); font-size: 0.7rem; }
.tl-tick i { width: 1px; height: var(--fib-2); background: var(--border); display: block; }
.tl-tick b { font-weight: 400; margin-top: var(--fib-1); white-space: nowrap; }

/* faixa principal (filmstrip + trechos + playhead) */
.tl-track {
  position: relative;
  height: var(--fib-34);
  background: var(--bg-3);
  border-radius: var(--radius-input);
  border: 1px solid var(--border);
  overflow: hidden;
  cursor: crosshair;
  touch-action: none;
}
.tl-film { position: absolute; inset: 0; display: flex; pointer-events: none; }
.tl-frame { height: 100%; flex: 1 1 auto; background-size: cover; background-position: center; border-right: 1px solid rgba(0,0,0,0.25); }
.tl-film.loading { background: repeating-linear-gradient(90deg, var(--bg-3) 0 18px, var(--bg-4) 18px 36px); animation: tl-shimmer 1.2s linear infinite; }
@keyframes tl-shimmer { to { background-position: 36px 0; } }

/* container dos trechos selecionados */
.tl-segs { position: absolute; inset: 0; pointer-events: none; }
.tl-seg {
  position: absolute; top: 0; bottom: 0;
  background: rgba(54, 192, 138, 0.28);
  border: 2px solid var(--success);
  border-radius: var(--fib-1);
  pointer-events: auto; cursor: grab;
  box-shadow: 0 0 0 1px rgba(0,0,0,0.2) inset;
}
.tl-seg:active { cursor: grabbing; }
.tl-seg.selected { border-color: #fff; box-shadow: 0 0 0 2px var(--accent), 0 0 10px rgba(91, 140, 255, 0.55); z-index: 2; }
.tl-seg-label {
  position: absolute; top: var(--fib-1); left: 50%; transform: translateX(-50%);
  font-size: 0.7rem; color: #fff; background: rgba(0,0,0,0.55);
  padding: 0 var(--fib-1); border-radius: var(--fib-1); white-space: nowrap;
  font-variant-numeric: tabular-nums; pointer-events: none;
}
.tl-h {
  position: absolute; top: 0; bottom: 0; width: var(--fib-3);
  background: var(--success); cursor: ew-resize;
  display: flex; align-items: center; justify-content: center;
}
.tl-h::after { content: ''; width: 2px; height: 40%; background: rgba(0,0,0,0.45); border-radius: 1px; }
.tl-h-l { left: -2px; border-radius: var(--fib-1) 0 0 var(--fib-1); }
.tl-h-r { right: -2px; border-radius: 0 var(--fib-1) var(--fib-1) 0; }
.tl-seg-del {
  position: absolute; top: var(--fib-1); right: var(--fib-1);
  width: 1.1rem; height: 1.1rem; display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,0.6); color: #fff; border-radius: 50%; font-size: 0.7rem;
  cursor: pointer; opacity: 0; transition: opacity 0.15s;
}
.tl-seg:hover .tl-seg-del { opacity: 1; }
.tl-seg-del:hover { background: var(--danger); }

/* seleção em andamento (draft) */
.tl-draft {
  position: absolute; top: 0; bottom: 0;
  background: rgba(91, 140, 255, 0.30);
  border: 2px dashed var(--accent); border-radius: var(--fib-1);
  pointer-events: none; z-index: 3;
}

/* cursor de hover com tempo */
.tl-cursor { position: absolute; top: 0; bottom: 0; width: 1px; background: rgba(231,235,242,0.5); pointer-events: none; z-index: 3; }
.tl-cursor-time {
  position: absolute; top: -1.2rem; left: 50%; transform: translateX(-50%);
  font-size: 0.7rem; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); padding: 0 var(--fib-1); border-radius: var(--fib-1);
  white-space: nowrap; font-variant-numeric: tabular-nums;
}

/* playhead (marcador) arrastável */
.tl-playhead { position: absolute; top: 0; bottom: 0; width: 2px; background: var(--danger); left: 0; z-index: 4; cursor: ew-resize; }
.tl-ph-grip {
  position: absolute; top: -1px; left: 50%; transform: translateX(-50%);
  width: var(--fib-3); height: var(--fib-3); background: var(--danger);
  border-radius: 0 0 50% 50%; box-shadow: 0 1px 3px rgba(0,0,0,0.5);
}
.tl-playhead::after { content: ''; position: absolute; inset: -6px -8px; } /* área de toque maior */

.tl-help { color: var(--muted); font-size: 0.7rem; margin: var(--fib-3) 0 0; text-align: center; line-height: 1.5; }
.tl-help b { color: var(--text); }

/* ===== Rail de controles ===== */
.controls-rail { display: flex; flex-direction: column; gap: var(--fib-5); min-width: 0; }
.ctrl-card {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: var(--fib-5);
  transition: border-color 0.15s;
}
.ctrl-card:hover { border-color: #3a4555; }
.ctrl-head { display: flex; align-items: center; gap: var(--fib-3); margin-bottom: var(--fib-3); cursor: pointer; }
.ctrl-head h3 { margin: 0; font-size: 1rem; font-weight: 600; }
/* accordion — minimiza os cards de controle */
.ctrl-chevron { margin-left: auto; flex: none; color: var(--muted); font-size: 0.8rem; transition: transform 0.2s; }
.ctrl-card.collapsed > .ctrl-head { margin-bottom: 0; }
.ctrl-card.collapsed > .ctrl-head .ctrl-chevron { transform: rotate(-90deg); }
.ctrl-card.collapsed > :not(.ctrl-head) { display: none; }

/* projetos salvos */
.projects-box { margin-top: var(--fib-5); }
.projects-list { list-style: none; padding: 0; margin: var(--fib-3) 0 0; display: flex; flex-direction: column; gap: var(--fib-2); }
.project-item {
  display: flex; align-items: center; gap: var(--fib-3);
  padding: var(--fib-3); background: var(--bg-3); border: 1px solid var(--border);
  border-radius: var(--radius-input); font-size: 0.85rem; cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.project-item:hover { border-color: var(--accent); background: var(--bg-4); }
.project-thumb { width: var(--fib-21); height: var(--fib-13); border-radius: var(--fib-1); background: #000 center/cover; flex: none; }
.project-meta { flex: 1; min-width: 0; }
.project-name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.project-date { color: var(--muted); font-size: 0.7rem; }
.project-del { color: var(--muted); cursor: pointer; flex: none; }
.project-del:hover { color: var(--danger); }
.welcome-projects { margin-top: var(--fib-8); text-align: left; }
.welcome-projects .projects-list { max-width: 24rem; margin: var(--fib-3) auto 0; }
.step {
  flex: none;
  width: var(--fib-8); height: var(--fib-8);
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--accent); color: #fff;
  border-radius: 50%; font-size: 0.85rem; font-weight: 700;
}
.export-card { border-color: rgba(91, 140, 255, 0.4); background: linear-gradient(180deg, rgba(91,140,255,0.07), var(--bg-3)); }
.chip-opt {
  flex: none; display: inline-flex; align-items: center;
  background: var(--bg-4); color: var(--muted);
  border: 1px solid var(--border); border-radius: var(--fib-8);
  padding: 0 var(--fib-2); height: var(--fib-5); font-size: 0.7rem; font-weight: 600;
}
.music-info {
  display: flex; align-items: center; gap: var(--fib-2);
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-input);
  padding: var(--fib-2) var(--fib-3); margin: var(--fib-3) 0; font-size: 0.85rem;
}
.music-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.music-name::before { content: '🎵 '; }
.music-remove { color: var(--muted); cursor: pointer; }
.music-remove:hover { color: var(--danger); }
.hint { color: var(--muted); font-size: 0.7rem; margin: 0 0 var(--fib-3); line-height: 1.45; }
.hint b { color: var(--text); }
.muted-tip { margin: var(--fib-3) 0 0; font-style: italic; }

/* ===== Controles de corte ===== */
.cut-controls { display: flex; gap: var(--fib-3); }
.cut-controls .btn { flex: 1; }
.mark-info {
  color: var(--text); font-size: 0.7rem;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-input); padding: var(--fib-2) var(--fib-3);
  margin: var(--fib-3) 0; text-align: center;
}
.mark-info b { color: var(--accent); font-variant-numeric: tabular-nums; }

/* listas de segmentos / legendas */
.seg-list, .sub-list { list-style: none; padding: 0; margin: var(--fib-3) 0 0; display: flex; flex-direction: column; gap: var(--fib-2); }
.seg-row {
  display: flex; align-items: center; gap: var(--fib-3);
  padding: var(--fib-2) var(--fib-3); background: var(--bg); border-radius: var(--radius-input);
  font-size: 0.85rem; border: 1px solid var(--border);
}
.seg-row { cursor: pointer; }
.seg-row.selected { border-color: var(--accent); background: var(--bg-4); }
.seg-row .seg-time { font-variant-numeric: tabular-nums; color: var(--text); }
.seg-row .seg-del { margin-left: auto; color: var(--muted); cursor: pointer; }
.seg-row .seg-del:hover { color: var(--danger); }

.sub-row { display: flex; flex-direction: column; gap: var(--fib-1); padding: var(--fib-3); background: var(--bg); border-radius: var(--radius-input); border: 1px solid var(--border); }
.sub-row .sub-time { color: var(--muted); font-size: 0.7rem; font-variant-numeric: tabular-nums; }
.sub-row textarea {
  width: 100%; resize: vertical; min-height: var(--fib-21);
  background: var(--bg-2); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius-input);
  padding: var(--fib-2); font-family: inherit; font-size: 0.85rem;
}
.sub-actions { display: flex; gap: var(--fib-3); margin-top: var(--fib-3); }
.sub-actions .btn-ghost { flex: none; }
.sub-actions .btn-primary { flex: 1; }

/* ===== Campos de áudio (slider, switch, número) ===== */
.field { margin-bottom: var(--fib-3); }
.field-label { display: flex; align-items: center; justify-content: space-between; font-size: 0.85rem; font-weight: 600; margin-bottom: var(--fib-2); }
.field-label small { color: var(--muted); font-weight: 400; }
.field-val { color: var(--accent); font-variant-numeric: tabular-nums; }
.field-val.boost { color: var(--warn); }

.slider {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: var(--fib-2);
  background: linear-gradient(90deg, var(--accent) 0%, var(--bg-4) 0%);
  border-radius: var(--fib-1); outline: none; cursor: pointer;
}
.slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: var(--fib-5); height: var(--fib-5);
  background: #fff; border: 2px solid var(--accent);
  border-radius: 50%; cursor: pointer; box-shadow: var(--shadow);
  transition: transform 0.1s;
}
.slider::-webkit-slider-thumb:hover { transform: scale(1.15); }
.slider::-moz-range-thumb {
  width: var(--fib-5); height: var(--fib-5);
  background: #fff; border: 2px solid var(--accent); border-radius: 50%; cursor: pointer;
}
.slider-ticks { display: flex; justify-content: space-between; color: var(--muted); font-size: 0.7rem; margin-top: var(--fib-1); }

.switch-row {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--fib-3); font-size: 0.85rem; cursor: pointer;
  padding: var(--fib-2) 0; margin-bottom: var(--fib-3);
}
.switch { position: relative; display: inline-block; width: 2.6rem; height: var(--fib-8); flex: none; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch .track {
  position: absolute; inset: 0; background: var(--bg-4);
  border: 1px solid var(--border); border-radius: var(--fib-8); transition: background 0.2s;
}
.switch .track::before {
  content: ''; position: absolute; left: 3px; top: 50%; transform: translateY(-50%);
  width: 1.1rem; height: 1.1rem; background: #fff; border-radius: 50%; transition: left 0.2s;
}
.switch input:checked + .track { background: var(--accent); border-color: var(--accent); }
.switch input:checked + .track::before { left: 1.4rem; }

.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--fib-3); }
.eq-presets { display: grid; grid-template-columns: 1fr 1fr; gap: var(--fib-2); margin-bottom: var(--fib-3); }
.eq-presets .btn { height: var(--fib-13); padding: 0 var(--fib-2); font-size: 0.7rem; }
.eq-preset.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.num {
  width: 100%; height: var(--fib-21);
  background: var(--bg-2); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius-input);
  padding: 0 var(--fib-3); font-family: inherit; font-size: 0.85rem;
}
.num:focus, .slider:focus-visible { border-color: var(--accent); outline: none; }

/* ===== Botões ===== */
.btn {
  height: var(--fib-21);
  padding: 0 var(--fib-5);
  border-radius: var(--radius-input);
  border: 1px solid transparent;
  font-size: 0.85rem; font-weight: 600;
  cursor: pointer; font-family: inherit;
  display: inline-flex; align-items: center; justify-content: center; gap: var(--fib-2);
  transition: background 0.15s, opacity 0.15s, transform 0.1s, border-color 0.15s;
}
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: #fff; width: 100%; }
.btn-primary:hover:not(:disabled) { background: var(--accent-2); }
.btn-secondary { background: var(--bg-4); color: var(--text); border-color: var(--border); width: 100%; }
.btn-secondary:hover:not(:disabled) { border-color: var(--accent); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover:not(:disabled) { border-color: var(--accent); background: var(--bg-4); }
.btn-big { height: var(--fib-34); font-size: 1rem; }

/* ===== Empty state / guia inicial ===== */
.empty-state { display: flex; align-items: center; justify-content: center; padding: var(--fib-13) var(--fib-5); }
.welcome { max-width: 28rem; text-align: center; }
.welcome-emoji { font-size: 3rem; margin: 0 0 var(--fib-3); }
.welcome h2 { margin: 0 0 var(--fib-2); font-size: 1.5rem; }
.welcome-sub { color: var(--muted); margin: 0 0 var(--fib-8); }
.welcome-steps { list-style: none; padding: 0; margin: 0 0 var(--fib-8); display: flex; flex-direction: column; gap: var(--fib-3); text-align: left; }
.welcome-steps li { display: flex; align-items: center; gap: var(--fib-3); background: var(--bg-3); border: 1px solid var(--border); border-radius: var(--radius-input); padding: var(--fib-3) var(--fib-5); font-size: 0.85rem; }
.wbadge {
  flex: none; width: var(--fib-8); height: var(--fib-8);
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--accent); color: #fff; border-radius: 50%; font-weight: 700; font-size: 0.85rem;
}
.welcome .btn-primary { max-width: 20rem; margin: 0 auto; }

/* ===== Área de job / resultado ===== */
.job-area { display: flex; flex-direction: column; gap: var(--fib-3); margin-top: var(--fib-3); }
.muted { color: var(--muted); font-size: 0.85rem; }
.job-card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-input); padding: var(--fib-5); }
.job-card .job-label { font-size: 0.85rem; margin-bottom: var(--fib-2); }
.progress { height: var(--fib-2); background: var(--bg-2); border-radius: var(--fib-1); overflow: hidden; }
.progress > span { display: block; height: 100%; width: 0; background: var(--accent); transition: width 0.3s; }
.progress.err > span { background: var(--danger); }
.progress.ok > span { background: var(--success); }
.job-dl { margin-top: var(--fib-3); }
.job-dl a { color: var(--accent); text-decoration: none; font-weight: 600; font-size: 0.85rem; }
.job-dl a:hover { text-decoration: underline; }

/* ===== Toast ===== */
.toast {
  position: fixed; bottom: var(--fib-13); left: 50%; transform: translateX(-50%);
  background: var(--bg-3); color: var(--text);
  border: 1px solid var(--border); border-left: var(--fib-1) solid var(--accent);
  padding: var(--fib-3) var(--fib-8); border-radius: var(--radius-input);
  box-shadow: var(--shadow); font-size: 0.85rem; z-index: 50; max-width: 90vw;
  animation: toast-in 0.2s ease;
}
@keyframes toast-in { from { opacity: 0; transform: translate(-50%, var(--fib-3)); } to { opacity: 1; transform: translate(-50%, 0); } }
.toast.err { border-left-color: var(--danger); }
.toast.ok { border-left-color: var(--success); }
.toast.warn { border-left-color: var(--warn); }

/* ===== Responsivo (breakpoints padrão: 1024 / 768 / 480 / 360) ===== */
@media (max-width: 1024px) {
  .editor-grid { grid-template-columns: 1fr; }   /* controles passam para baixo do vídeo */
  .controls-rail { display: grid; grid-template-columns: 1fr 1fr; }
  .export-card { grid-column: 1 / -1; }
}
@media (max-width: 768px) {
  .app { grid-template-columns: 1fr; gap: var(--fib-5); padding: var(--fib-8); }
  .topbar { padding: var(--fib-5) var(--fib-8); }
  .controls-rail { grid-template-columns: 1fr; }
  .player { max-height: 50vh; }
}
@media (max-width: 480px) {
  .app { padding: var(--fib-5); }
  .panel, .editor-panel { padding: var(--fib-5); }
  .topbar { padding: var(--fib-3) var(--fib-5); }
  .brand { font-size: 1rem; }
  .brand-sub { font-size: 0.7rem; }
  .dropzone { padding: var(--fib-8) var(--fib-3); }
  .field-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 360px) {
  .app { padding: var(--fib-3); }
  .panel, .editor-panel, .ctrl-card { padding: var(--fib-3); }
  .cut-controls, .sub-actions { flex-direction: column; }
}