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

:root {
  --bg: #0f0f13;
  --surface: #1a1a24;
  --surface-2: #22222f;
  --border: #2e2e40;
  --accent: #6366f1;
  --accent-hover: #4f52d8;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --radius: 12px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ── Center layout (login / upload) ── */
body.center-page {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

/* ── Login card ── */
.login-card {
  width: 100%;
  max-width: 380px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 36px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.login-icon {
  width: 72px;
  height: 72px;
  background: var(--surface-2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 4px;
}

.login-card h1 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 8px;
}

.login-card form {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ── Upload card ── */
.upload-card {
  width: 100%;
  max-width: 520px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 36px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.upload-header {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--accent);
}

.upload-header h1 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
}

/* ── Drop zone ── */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 48px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  text-align: center;
}

.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--accent);
  background: rgba(99, 102, 241, 0.06);
}

.drop-zone-content, .drop-zone-ready {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
}

.drop-zone-content svg { color: var(--text-muted); }

.drop-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.drop-sub { font-size: 0.85rem; }

.link {
  color: var(--accent);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.logout-link {
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s;
}

.logout-link:hover { color: var(--text); }

/* ── Form fields ── */
.field { width: 100%; }

input[type="password"],
input[type="number"] {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.95rem;
  padding: 11px 14px;
  outline: none;
  transition: border-color 0.2s;
}

input[type="password"]:focus,
input[type="number"]:focus {
  border-color: var(--accent);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background 0.15s, opacity 0.15s;
  text-decoration: none;
  white-space: nowrap;
}

.btn:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); }

.btn-danger {
  background: var(--danger);
  color: #fff;
}
.btn-danger:hover { background: var(--danger-hover); }

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--surface-2); color: var(--text); }

.btn-full { width: 100%; justify-content: center; padding: 12px; }

.icon-btn { padding: 8px; }

/* ── Alert ── */
.alert {
  width: 100%;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.88rem;
}
.alert-error {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}

/* ── Viewer layout ── */
body.viewer-page {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

.toolbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  gap: 12px;
  flex-shrink: 0;
  z-index: 10;
  min-height: 56px;
  flex-wrap: wrap;
}

.toolbar-left, .toolbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 160px;
}

.toolbar-right { justify-content: flex-end; }

.toolbar-center {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  justify-content: center;
  flex-wrap: wrap;
  padding: 6px 0;
}

.page-info {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.page-info input[type="number"] {
  width: 52px;
  padding: 5px 8px;
  text-align: center;
  font-size: 0.88rem;
}

/* hide number input arrows */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button { -webkit-appearance: none; }
input[type="number"] { -moz-appearance: textfield; }

.separator {
  width: 1px;
  height: 20px;
  background: var(--border);
  margin: 0 4px;
}

.zoom-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  width: 40px;
  text-align: center;
}

/* ── Mode panels (crop / rect) ── */
.mode-panel {
  display: none;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.mode-panel.active { display: block; }

.mode-panel-inner {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 10px 20px;
  flex-wrap: wrap;
}

.panel-hint {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.84rem;
  color: var(--text-muted);
  flex-shrink: 0;
  max-width: 320px;
}

/* Shared scope section */
.scope-section {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  flex: 1;
}

.scope-label {
  font-size: 0.84rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.scope-radio {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.85rem;
  color: var(--text);
  cursor: pointer;
  white-space: nowrap;
}
.scope-radio input[type="radio"] { accent-color: var(--accent); cursor: pointer; }

.scope-text {
  width: 100px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 0.84rem;
  padding: 3px 7px;
  outline: none;
}
.scope-text:focus { border-color: var(--accent); }

.scope-num {
  width: 52px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 0.84rem;
  padding: 3px 6px;
  outline: none;
  text-align: center;
}
.scope-num:focus { border-color: var(--accent); }

.panel-actions { display: flex; gap: 8px; margin-left: auto; }

/* ── Rect panel specific ── */
.rect-panel-layout { align-items: flex-start; }

.rect-list-col {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 200px;
  max-width: 460px;
  flex: 1;
}

.rect-list-header {
  font-size: 0.82rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.rect-draw-hint { color: var(--text-muted); font-size: 0.8rem; }

.rect-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: 120px;
  overflow-y: auto;
}

.rect-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 8px;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.1s;
}
.rect-item:hover { background: var(--surface-2); }
.rect-item.selected { background: rgba(99,102,241,0.1); border-color: rgba(99,102,241,0.3); }

.rect-num {
  font-size: 0.78rem;
  color: var(--text-muted);
  width: 14px;
  text-align: center;
  flex-shrink: 0;
}

.rect-swatch {
  display: block;
  width: 20px;
  height: 20px;
  border-radius: 4px;
  border: 1px solid rgba(255,255,255,0.15);
  cursor: pointer;
  flex-shrink: 0;
  transition: transform 0.1s;
}
.rect-swatch:hover { transform: scale(1.12); }

.rect-swatch-wrap {
  position: relative;
  width: 20px;
  height: 20px;
  overflow: hidden;
  flex-shrink: 0;
  cursor: pointer;
  border-radius: 4px;
}
.rect-color-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
  padding: 0;
  border: none;
}

.rect-fill {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.82rem;
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

.rect-opacity-slider {
  width: 72px;
  height: 4px;
  accent-color: var(--accent);
  cursor: pointer;
}

.rect-opacity-val {
  font-size: 0.78rem;
  color: var(--text-muted);
  width: 30px;
  text-align: right;
}

.rect-bw {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.82rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

.rect-del {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1rem;
  cursor: pointer;
  padding: 0 2px;
  line-height: 1;
  margin-left: auto;
  flex-shrink: 0;
}
.rect-del:hover { color: var(--danger); }

.btn-active {
  background: rgba(99, 102, 241, 0.15) !important;
  border-color: var(--accent) !important;
  color: var(--accent) !important;
}

/* ── Canvas wrapper ── */
.canvas-wrapper {
  flex: 1;
  overflow: auto;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 24px;
  background: #080810;
}

.canvas-container {
  position: relative;
  display: inline-block;
  line-height: 0;
}

#pdf-canvas {
  display: none;
  box-shadow: 0 8px 40px rgba(0,0,0,0.6);
  border-radius: 4px;
}

#overlay {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  border-radius: 4px;
}

/* ── Spinner ── */
.loading-spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  color: var(--text-muted);
  margin-top: 80px;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.split-left { display:flex; flex-direction:column; gap:8px; flex:1; }
.split-header-row { display:flex; align-items:center; gap:12px; }
.split-list { display:flex; flex-direction:column; gap:4px; max-height:110px; overflow-y:auto; }
.split-row { display:flex; align-items:center; gap:8px; font-size:0.85rem; color:var(--text); }
.split-row-label { color:var(--text-muted); font-size:0.83rem; white-space:nowrap; }
.split-results { display:flex; align-items:center; gap:12px; padding:8px 20px; border-top:1px solid var(--border); flex-wrap:wrap; }
.split-download-list { display:flex; gap:8px; flex-wrap:wrap; }
.split-downloaded { background:var(--surface-2)!important; color:var(--text-muted)!important; cursor:default; }
.insert-inline-label { display:flex; align-items:center; gap:8px; }
.insert-textarea-wrap textarea { background:var(--surface-2); border:1px solid var(--border); border-radius:8px; color:var(--text); font-size:0.88rem; padding:6px 10px; outline:none; resize:vertical; width:220px; height:60px; }
.insert-textarea-wrap textarea:focus { border-color:var(--accent); }
.insert-format-row { display:flex; align-items:center; gap:8px; flex-wrap:wrap; }
.insert-select { background:var(--surface-2); border:1px solid var(--border); border-radius:6px; color:var(--text); font-size:0.85rem; padding:4px 8px; outline:none; cursor:pointer; }
.insert-pos-row { display:flex; align-items:center; gap:8px; font-size:0.85rem; color:var(--text-muted); }
.fmt-field-label { display:flex; align-items:center; gap:8px; }
.fmt-radio-group { display:flex; align-items:center; gap:10px; flex-wrap:wrap; }
.remove-preview { font-size:0.83rem; white-space:nowrap; }
.remove-preview-ok    { color:#86efac; }
.remove-preview-error { color:#fca5a5; }