/* ============ Render Studio — tema escuro estúdio ============ */
:root {
  --bg: #0c0f13;
  --panel: #12161c;
  --panel-2: #171c24;
  --border: #232a34;
  --border-hi: #2f3947;
  --text: #e8edf3;
  --muted: #93a0af;
  --faint: #5b6672;
  --accent: #10b981;
  --accent-hi: #34d399;
  --accent-dim: rgba(16, 185, 129, 0.12);
  --danger: #f87171;
  --warn: #fbbf24;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 14.5px;
  line-height: 1.55;
  min-height: 100vh;
}
img { max-width: 100%; display: block; }
button { font-family: inherit; }
.d-none { display: none !important; }

/* ---------- topbar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 12px;
  padding: 14px 22px;
  background: rgba(12, 15, 19, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 13px; text-decoration: none; color: inherit; }
.brand-logo { height: 24px; width: auto; }
.brand-divider { width: 1px; height: 26px; background: var(--border-hi); }
.brand-name { font-size: 16px; font-weight: 700; letter-spacing: -0.02em; }
.brand-sub { font-size: 12px; color: var(--muted); margin-top: -2px; }
.topbar-spacer { flex: 1; }
.top-link {
  display: inline-flex; align-items: center; gap: 7px;
  color: var(--muted); text-decoration: none; font-size: 13px; font-weight: 500;
  padding: 8px 12px; border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: all 0.15s ease;
}
.top-link:hover { color: var(--text); border-color: var(--border); background: var(--panel); }

/* ---------- layout ---------- */
.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 20px;
  max-width: 1220px;
  margin: 0 auto;
  padding: 22px;
}
.col-main { display: flex; flex-direction: column; gap: 18px; min-width: 0; }
.col-side { display: flex; flex-direction: column; gap: 18px; }

/* ---------- cards ---------- */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  animation: cardIn 0.35s ease both;
}
@keyframes cardIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.card-head {
  display: flex; align-items: center; gap: 10px;
  padding: 15px 18px 0;
}
.card-head svg { color: var(--accent); flex-shrink: 0; }
.card-title { font-size: 14.5px; font-weight: 650; letter-spacing: -0.01em; }
.card-desc { font-size: 12.5px; color: var(--muted); margin-top: 1px; }
.card-body { padding: 15px 18px 18px; }
.step-num {
  width: 22px; height: 22px; border-radius: 7px;
  display: grid; place-items: center;
  background: var(--accent-dim); color: var(--accent-hi);
  font-size: 12px; font-weight: 700; flex-shrink: 0;
}

/* ---------- dropzone ---------- */
.dropzone {
  border: 1.5px dashed var(--border-hi);
  border-radius: var(--radius);
  padding: 40px 20px;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  text-align: center; cursor: pointer;
  transition: all 0.2s ease;
  color: var(--muted);
}
.dropzone:hover, .dropzone.drag {
  border-color: var(--accent);
  background: var(--accent-dim);
  color: var(--text);
}
.dropzone svg { color: var(--accent); }
.dz-title { font-weight: 600; font-size: 14.5px; color: var(--text); }
.dz-hint { font-size: 12.5px; }
.dz-formats { display: flex; gap: 6px; margin-top: 4px; }
.dz-badge {
  font-size: 10.5px; font-weight: 600; letter-spacing: 0.04em;
  padding: 3px 8px; border-radius: 999px;
  background: var(--panel-2); border: 1px solid var(--border);
  color: var(--muted);
}

/* ---------- preview ---------- */
.preview-wrap { position: relative; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); }
.preview-wrap img { width: 100%; }
.preview-meta {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  margin-top: 12px; font-size: 12.5px; color: var(--muted);
}
.preview-meta strong { color: var(--text); font-weight: 600; }
.meta-chip { display: inline-flex; align-items: center; gap: 5px; }
.meta-chip svg { color: var(--faint); }
.preview-actions { display: flex; gap: 8px; margin-left: auto; }
.mask-flag {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; font-weight: 600; color: var(--accent-hi);
  background: var(--accent-dim); border: 1px solid rgba(16,185,129,0.3);
  padding: 4px 10px; border-radius: 999px;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  font-size: 13px; font-weight: 600;
  padding: 9px 15px;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}
.btn:hover { border-color: var(--border-hi); background: #1d232d; }
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }
.btn-sm { padding: 6px 11px; font-size: 12.5px; }
.btn-primary {
  background: linear-gradient(135deg, #0ea371, #10b981);
  border-color: transparent; color: #06281c;
}
.btn-primary:hover { background: linear-gradient(135deg, #10b981, #34d399); }
.btn-ghost { background: transparent; border-color: transparent; color: var(--muted); }
.btn-ghost:hover { color: var(--text); background: var(--panel-2); border-color: transparent; }
.btn-danger:hover { border-color: var(--danger); color: var(--danger); }
.btn-block { width: 100%; }
.btn-lg { padding: 13px 20px; font-size: 14.5px; border-radius: 12px; }

/* ---------- forms ---------- */
.field { margin-bottom: 14px; }
.field:last-child { margin-bottom: 0; }
.field-label {
  display: flex; align-items: center; gap: 6px;
  font-size: 12px; font-weight: 650; letter-spacing: 0.03em;
  text-transform: uppercase; color: var(--muted);
  margin-bottom: 7px;
}
.field-label .hint { text-transform: none; letter-spacing: 0; font-weight: 500; color: var(--faint); }
select, input[type="text"], textarea {
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: inherit; font-size: 13.5px;
  padding: 9px 12px;
  outline: none;
  transition: border-color 0.15s ease;
}
select:focus, input:focus, textarea:focus { border-color: var(--accent); }
textarea { resize: vertical; min-height: 70px; line-height: 1.5; }
.mono { font-family: 'JetBrains Mono', Consolas, monospace; font-size: 12.5px; }

/* segmented */
.seg {
  display: flex; background: var(--panel-2);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 3px; gap: 3px;
}
.seg button {
  flex: 1; border: 0; background: transparent; color: var(--muted);
  font-size: 12.5px; font-weight: 600; padding: 7px 6px;
  border-radius: 7px; cursor: pointer; transition: all 0.15s ease;
}
.seg button:hover { color: var(--text); }
.seg button.on { background: var(--accent); color: #06281c; }

/* model cards */
.model-list { display: flex; flex-direction: column; gap: 8px; }
.model-card {
  display: flex; align-items: center; gap: 10px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--panel-2);
  padding: 10px 12px; cursor: pointer;
  transition: all 0.15s ease;
}
.model-card:hover { border-color: var(--border-hi); }
.model-card.on { border-color: var(--accent); background: var(--accent-dim); }
.model-card .radio {
  width: 15px; height: 15px; border-radius: 50%;
  border: 2px solid var(--faint); flex-shrink: 0;
  transition: all 0.15s ease;
}
.model-card.on .radio { border-color: var(--accent); background: var(--accent); box-shadow: inset 0 0 0 2.5px var(--panel); }
.model-info { min-width: 0; }
.model-name { font-size: 13px; font-weight: 650; display: flex; align-items: center; gap: 7px; }
.model-desc { font-size: 11.5px; color: var(--muted); }
.badge {
  font-size: 9.5px; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase;
  background: var(--accent-dim); color: var(--accent-hi);
  padding: 2px 7px; border-radius: 999px;
}

/* stepper */
.stepper { display: flex; align-items: center; gap: 10px; }
.stepper button {
  width: 30px; height: 30px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--panel-2); color: var(--text);
  font-size: 16px; font-weight: 600; cursor: pointer;
  display: grid; place-items: center;
  transition: all 0.15s ease;
}
.stepper button:hover { border-color: var(--accent); }
.stepper button:disabled { opacity: 0.35; cursor: not-allowed; }
.stepper-val { font-size: 15px; font-weight: 700; min-width: 20px; text-align: center; }

/* toggle */
.toggle-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.toggle-label { font-size: 13px; font-weight: 600; }
.toggle-sub { font-size: 11.5px; color: var(--muted); }
.switch {
  position: relative; width: 40px; height: 22px; border-radius: 999px;
  background: var(--border-hi); cursor: pointer; border: 0;
  transition: background 0.2s ease; flex-shrink: 0;
}
.switch::after {
  content: ''; position: absolute; top: 3px; left: 3px;
  width: 16px; height: 16px; border-radius: 50%;
  background: #fff; transition: transform 0.2s ease;
}
.switch.on { background: var(--accent); }
.switch.on::after { transform: translateX(18px); }

/* slider */
.range-row { display: flex; align-items: center; gap: 12px; }
input[type="range"] {
  flex: 1; appearance: none; height: 4px; border-radius: 999px;
  background: var(--border-hi); outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  appearance: none; width: 16px; height: 16px; border-radius: 50%;
  background: var(--accent); cursor: pointer;
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.4);
}
.range-val { font-size: 12.5px; font-weight: 700; color: var(--accent-hi); min-width: 34px; text-align: right; }

/* ---------- chips (presets, elementos) ---------- */
.chip-row { display: flex; flex-wrap: wrap; gap: 7px; }
.chip {
  border: 1px solid var(--border); background: var(--panel-2);
  color: var(--muted); border-radius: 999px;
  font-size: 12.5px; font-weight: 600;
  padding: 6px 13px; cursor: pointer;
  transition: all 0.15s ease;
  display: inline-flex; align-items: center; gap: 6px;
}
.chip:hover { color: var(--text); border-color: var(--border-hi); }
.chip.on { background: var(--accent-dim); border-color: var(--accent); color: var(--accent-hi); }
.chip svg { flex-shrink: 0; }

/* elementos detectados */
.el-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(215px, 1fr)); gap: 8px; }
.el-card {
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--panel-2); padding: 10px 12px;
  cursor: pointer; transition: all 0.15s ease;
  position: relative;
}
.el-card:hover { border-color: var(--border-hi); }
.el-card.on { border-color: rgba(16, 185, 129, 0.55); background: var(--accent-dim); }
.el-card .check {
  position: absolute; top: 9px; right: 9px;
  width: 17px; height: 17px; border-radius: 5px;
  border: 1.5px solid var(--faint);
  display: grid; place-items: center;
  color: transparent; transition: all 0.15s ease;
}
.el-card.on .check { background: var(--accent); border-color: var(--accent); color: #06281c; }
.el-name { font-size: 12.5px; font-weight: 650; padding-right: 22px; }
.el-mat { font-size: 11px; color: var(--muted); }
.el-note { font-size: 11px; color: var(--faint); margin-top: 4px; }
.el-card.on .el-note { color: var(--muted); }

/* analysis meta */
.an-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 13px; }
.an-item {
  background: var(--panel-2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 9px 12px;
}
.an-item .k { font-size: 10.5px; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; color: var(--faint); }
.an-item .v { font-size: 12.5px; margin-top: 2px; }
.issue-list { display: flex; flex-direction: column; gap: 5px; margin-bottom: 13px; }
.issue {
  display: flex; gap: 8px; align-items: flex-start;
  font-size: 12.5px; color: var(--muted);
}
.issue svg { color: var(--warn); flex-shrink: 0; margin-top: 2px; }

/* ---------- prompt ---------- */
.prompt-meta { display: flex; align-items: center; gap: 10px; margin-top: 8px; font-size: 12px; color: var(--faint); }
.prompt-warn { color: var(--warn); display: flex; align-items: center; gap: 6px; font-size: 12px; }
.prompt-edited { color: var(--warn); }

/* ---------- generate bar ---------- */
.gen-bar {
  display: flex; align-items: center; gap: 14px;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 18px;
  position: sticky; bottom: 14px; z-index: 40;
  box-shadow: var(--shadow);
}
.cost-box { font-size: 12px; color: var(--muted); }
.cost-val { font-size: 16px; font-weight: 700; color: var(--text); }
.gen-bar .btn-primary { margin-left: auto; }
.spinner {
  width: 16px; height: 16px; border-radius: 50%;
  border: 2px solid rgba(6, 40, 28, 0.3); border-top-color: #06281c;
  animation: spin 0.7s linear infinite;
}
.spinner.lite { border-color: rgba(255,255,255,0.2); border-top-color: var(--accent); }
@keyframes spin { to { transform: rotate(360deg); } }

/* progress shimmer no card de resultado */
.working {
  border-radius: var(--radius); border: 1px solid var(--border);
  background: var(--panel-2);
  padding: 34px 20px; text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 12px;
}
.working-title { font-weight: 650; }
.working-sub { font-size: 12.5px; color: var(--muted); }
.working .bar {
  width: min(320px, 90%); height: 5px; border-radius: 999px;
  background: var(--border); overflow: hidden; position: relative;
}
.working .bar::after {
  content: ''; position: absolute; inset: 0; width: 40%;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  animation: sweep 1.4s ease-in-out infinite;
}
@keyframes sweep { 0% { left: -40%; } 100% { left: 100%; } }

/* ---------- comparador antes/depois ---------- */
.compare {
  position: relative; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--border);
  user-select: none; touch-action: none;
}
.compare img { width: 100%; pointer-events: none; }
.compare .after-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.compare .before-clip { position: absolute; inset: 0; overflow: hidden; }
.compare .before-clip img { position: absolute; inset: 0; height: 100%; width: 100%; object-fit: cover; }
.compare .divider {
  position: absolute; top: 0; bottom: 0; width: 2px;
  background: #fff; box-shadow: 0 0 12px rgba(0,0,0,0.6);
}
.compare .knob {
  position: absolute; top: 50%; transform: translate(-50%, -50%);
  width: 34px; height: 34px; border-radius: 50%;
  background: #fff; color: #111;
  display: grid; place-items: center;
  box-shadow: 0 2px 12px rgba(0,0,0,0.5);
  cursor: ew-resize;
}
.compare-tag {
  position: absolute; top: 10px;
  font-size: 10.5px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase;
  background: rgba(0,0,0,0.55); color: #fff;
  padding: 4px 10px; border-radius: 999px;
  backdrop-filter: blur(4px);
}
.compare-tag.left { left: 10px; }
.compare-tag.right { right: 10px; }

/* result actions/thumbs */
.result-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.result-meta { font-size: 12px; color: var(--faint); margin-top: 10px; }
.thumb-row { display: flex; gap: 8px; margin-top: 12px; }
.thumb {
  width: 74px; height: 74px; border-radius: var(--radius-sm);
  border: 2px solid transparent; overflow: hidden; cursor: pointer;
  transition: all 0.15s ease; padding: 0; background: none;
}
.thumb img { width: 100%; height: 100%; object-fit: cover; }
.thumb.on { border-color: var(--accent); }

/* ---------- histórico ---------- */
.hist-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 12px; }
.hist-card {
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--panel-2); overflow: hidden;
  transition: all 0.15s ease;
}
.hist-card:hover { border-color: var(--border-hi); transform: translateY(-2px); }
.hist-thumb { aspect-ratio: 4/3; overflow: hidden; cursor: zoom-in; }
.hist-thumb img { width: 100%; height: 100%; object-fit: cover; }
.hist-body { padding: 9px 11px; }
.hist-title { font-size: 12px; font-weight: 650; display: flex; align-items: center; gap: 6px; }
.hist-sub { font-size: 11px; color: var(--faint); margin-top: 1px; }
.hist-actions { display: flex; gap: 4px; padding: 0 7px 8px; }
.hist-actions .btn { padding: 4px 8px; font-size: 11px; flex: 1; }
.empty-hint {
  text-align: center; color: var(--faint); font-size: 13px;
  padding: 26px 10px;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
}

/* ---------- modal (lightbox / máscara) ---------- */
.modal-back {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(5, 8, 12, 0.82);
  backdrop-filter: blur(6px);
  display: grid; place-items: center;
  padding: 18px;
  animation: fadeIn 0.18s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
  max-width: min(960px, 96vw); max-height: 92vh;
  display: flex; flex-direction: column; overflow: hidden;
  animation: cardIn 0.22s ease;
}
.modal-head {
  display: flex; align-items: center; gap: 10px;
  padding: 13px 16px; border-bottom: 1px solid var(--border);
}
.modal-title { font-weight: 650; font-size: 14px; }
.modal-x { margin-left: auto; }
.modal-body { padding: 16px; overflow: auto; }
.lightbox-img { max-width: 100%; max-height: 74vh; margin: 0 auto; border-radius: var(--radius-sm); }

/* máscara */
.mask-tools { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin-bottom: 12px; }
.mask-canvas-wrap { position: relative; border-radius: var(--radius-sm); overflow: hidden; border: 1px solid var(--border); max-height: 62vh; }
.mask-canvas-wrap img { width: 100%; }
.mask-canvas-wrap canvas { position: absolute; inset: 0; width: 100%; height: 100%; cursor: crosshair; }
.mask-hint { font-size: 12px; color: var(--muted); margin-top: 10px; }

/* ---------- footer ---------- */
.footer {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  padding: 26px 20px 34px;
  border-top: 1px solid var(--border);
  margin-top: 8px;
  font-size: 12.5px; color: var(--faint);
}
.footer-logo { height: 15px; width: auto; opacity: 0.55; }
.footer a { color: var(--muted); text-decoration: none; font-weight: 600; }
.footer a:hover { color: var(--accent-hi); }

/* ---------- toasts ---------- */
.toasts {
  position: fixed; bottom: 18px; right: 18px; z-index: 200;
  display: flex; flex-direction: column; gap: 8px;
  max-width: min(380px, calc(100vw - 36px));
}
.toast {
  display: flex; align-items: flex-start; gap: 10px;
  background: var(--panel-2); border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 12px 14px; font-size: 13px;
  box-shadow: var(--shadow);
  animation: toastIn 0.25s ease;
}
.toast.err { border-left-color: var(--danger); }
.toast.err svg { color: var(--danger); }
.toast svg { color: var(--accent); flex-shrink: 0; margin-top: 1px; }
@keyframes toastIn { from { opacity: 0; transform: translateX(16px); } to { opacity: 1; transform: none; } }

/* ---------- responsivo ---------- */
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; padding: 14px; }
  .col-side { order: -1; }
  .side-collapse .card-body { display: none; }
  .side-collapse.open .card-body { display: block; }
  .collapse-arrow { margin-left: auto; transition: transform 0.2s ease; color: var(--muted); cursor: pointer; }
  .side-collapse.open .collapse-arrow { transform: rotate(180deg); }
  .card-head.clickable { cursor: pointer; padding-bottom: 15px; }
  .side-collapse.open .card-head.clickable { padding-bottom: 0; }
  .gen-bar { flex-wrap: wrap; }
  .gen-bar .btn-primary { width: 100%; margin-left: 0; }
  .an-meta { grid-template-columns: 1fr; }
  .el-grid { grid-template-columns: 1fr 1fr; }
  .brand-sub { display: none; }
}
@media (min-width: 901px) {
  .collapse-arrow { display: none; }
}
@media (max-width: 520px) {
  .el-grid { grid-template-columns: 1fr; }
  .hist-grid { grid-template-columns: 1fr 1fr; }
  .preview-actions { margin-left: 0; width: 100%; }
}