*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #141414;
  --surface: #1e1e1e;
  --surface2: #272727;
  --border: #333333;
  --accent: #e8450a;
  --accent2: #ff6b35;
  --text: #ffffff;
  --text2: #a0a0a0;
  --danger: #ff4444;
  --success: #22c55e;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.5);
}

body {
  font-family: 'Quantico', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 32px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

header .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
}

header .sub { font-size: 13px; color: var(--text2); }

.app {
  display: flex;
  flex: 1;
  gap: 0;
}

/* ── Sidebar steps ── */
.sidebar {
  width: 240px;
  min-width: 240px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.step-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 8px;
  cursor: default;
  transition: background 0.2s;
  opacity: 0.4;
}

.step-item.active { background: var(--surface2); opacity: 1; }
.step-item.done { opacity: 0.85; }
.step-item.done .step-num { background: var(--success); }

.step-num {
  width: 26px; height: 26px;
  border-radius: 50%;
  background: var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700;
  flex-shrink: 0;
}
.step-item.active .step-num { background: var(--accent); }

.step-label { font-size: 13px; font-weight: 500; }

/* ── Main content ── */
.main {
  flex: 1;
  padding: 24px 32px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-height: calc(100vh - 64px);
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}

.panel-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text);
}

/* ── Upload zone ── */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.upload-zone:hover, .upload-zone.drag { border-color: var(--accent); background: rgba(232,69,10,0.05); }
.upload-zone .icon { font-size: 40px; margin-bottom: 12px; }
.upload-zone p { color: var(--text2); font-size: 14px; }
.upload-zone strong { color: var(--text); }

/* ── Method tabs ── */
.method-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.tab-btn {
  padding: 8px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text2);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}
.tab-btn:hover { border-color: var(--accent); color: var(--text); }
.tab-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* ── Canvas ── */
.canvas-wrapper {
  position: relative;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  display: inline-block;
  max-width: 100%;
}

.canvas-wrapper img.canvas-bg {
  display: block;
  max-width: 100%;
  max-height: 420px;
  object-fit: contain;
}

#draw-canvas {
  display: block;
  max-width: 100%;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.brush-tools {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.tool-btn {
  padding: 6px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text);
  font-size: 12px;
  cursor: pointer;
}
.tool-btn.active { border-color: var(--accent); background: rgba(232,69,10,0.15); }

.brush-size-label { font-size: 12px; color: var(--text2); }

/* ── Inputs ── */
input[type="text"], input[type="number"], select {
  width: 100%;
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}
input[type="text"]:focus, input[type="number"]:focus, select:focus {
  border-color: var(--accent);
}

label { font-size: 13px; color: var(--text2); display: block; margin-bottom: 6px; }

.form-row { margin-bottom: 16px; }

.form-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ── Buttons ── */
.btn {
  padding: 11px 24px;
  border-radius: 8px;
  border: none;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: #c93a08; }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-secondary {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-success { background: var(--success); color: #ffffff; }

/* ── Progress ── */
.progress-bar-wrap {
  background: var(--surface2);
  border-radius: 99px;
  height: 8px;
  overflow: hidden;
  margin: 12px 0;
}
.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, #e8450a, #ff6b35);
  border-radius: 99px;
  transition: width 0.3s;
}
.progress-label { font-size: 13px; color: var(--text2); }

/* ── Preview comparison ── */
.comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.comparison-side { display: flex; flex-direction: column; gap: 8px; }
.comparison-label { font-size: 12px; color: var(--text2); text-transform: uppercase; letter-spacing: 0.05em; }
.comparison-side img, .comparison-side video {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border);
}

/* ── Alerts ── */
.alert {
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 13px;
  margin-bottom: 12px;
}
.alert-error { background: rgba(255,83,112,0.1); border: 1px solid var(--danger); color: var(--danger); }
.alert-success { background: rgba(78,204,163,0.1); border: 1px solid var(--success); color: var(--success); }
.alert-info { background: rgba(232,69,10,0.1); border: 1px solid var(--accent); color: var(--accent); }

/* ── Hidden ── */
.hidden { display: none !important; }

/* ── Quality badges ── */
.quality-options {
  display: flex;
  gap: 10px;
}
.quality-card {
  flex: 1;
  padding: 14px;
  border-radius: 8px;
  border: 2px solid var(--border);
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}
.quality-card:hover { border-color: var(--accent); }
.quality-card.selected { border-color: var(--accent); background: rgba(232,69,10,0.08); }
.quality-card .q-name { font-weight: 600; font-size: 14px; margin-bottom: 4px; }
.quality-card .q-desc { font-size: 11px; color: var(--text2); }

.file-input-styled {
  display: block;
  margin-top: 6px;
  color: var(--text);
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface2);
  width: 100%;
}

input[type="range"] {
  accent-color: var(--accent);
}

/* sidebar done state fix */
.step-item.done .step-num { background: var(--success); color: #ffffff; }

/* ── Media type selector ── */
.media-type-selector {
  display: flex;
  gap: 16px;
  margin-top: 8px;
}

.media-type-card {
  flex: 1;
  padding: 20px 16px;
  border-radius: var(--radius);
  border: 2px solid var(--border);
  cursor: pointer;
  text-align: center;
  transition: all 0.2s;
}
.media-type-card:hover { border-color: var(--accent); background: rgba(232,69,10,0.05); }
.media-type-card.active { border-color: var(--accent); background: rgba(232,69,10,0.1); }
.media-type-icon { font-size: 32px; margin-bottom: 8px; }
.media-type-label { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.media-type-desc { font-size: 12px; color: var(--text2); }

/* disabled OCR tab */
.tab-btn:disabled { opacity: 0.35; cursor: not-allowed; }
.tab-btn:disabled:hover { border-color: var(--border); color: var(--text2); }

@media (max-width: 768px) {
  .sidebar { display: none; }
  .comparison { grid-template-columns: 1fr; }
  .form-group { grid-template-columns: 1fr; }
}