/* WatermarkOut — Design System
   Dark editorial, violet accent, Syne + DM Mono. */

/* === Tokens === */
:root {
  --bg-base:        #09090b;
  --bg-card:        #18181b;
  --bg-surface:     #27272a;
  --bg-hover:       #3f3f46;
  --bg-elevated:    #1c1c20;

  --border:         #27272a;
  --border-focus:   #71717a;
  --border-accent:  #a78bfa;

  --text-primary:   #fafafa;
  --text-secondary: #a1a1aa;
  --text-muted:     #52525b;
  --text-accent:    #a78bfa;

  --accent:         #7c3aed;
  --accent-light:   #a78bfa;
  --accent-glow:    rgba(124, 58, 237, 0.15);

  --success:        #4ade80;
  --warning:        #fb923c;
  --error:          #f87171;
  --info:           #60a5fa;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.5);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 24px rgba(124, 58, 237, 0.25);

  --topbar-h: 56px;
  --sidebar-w: 300px;
  --toolbar-h: 48px;
}

/* === Reset === */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { color-scheme: dark; }
body {
  font-family: 'Syne', 'Segoe UI', system-ui, sans-serif;
  background: var(--bg-base);
  color: var(--text-primary);
  min-height: 100vh;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
button { font-family: inherit; cursor: pointer; }
a { color: var(--text-accent); text-decoration: none; }
a:hover { color: var(--accent-light); text-decoration: underline; }
img { max-width: 100%; display: block; }
code, pre, .label, .badge, .filename, .meta, .tag, .loader-meta {
  font-family: 'DM Mono', 'Courier New', monospace;
}

/* Subtle grain overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='100' height='100'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.06 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/></svg>");
  opacity: 0.4;
  pointer-events: none;
  z-index: 9999;
  mix-blend-mode: screen;
}

/* === Topbar === */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  background: rgba(9, 9, 11, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-icon { width: 26px; height: 26px; }
.brand-name {
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.01em;
}
.topnav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-btn {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  font-size: 13px;
  font-family: inherit;
  text-decoration: none;
  transition: all 0.15s;
}
.nav-btn:hover {
  color: var(--text-primary);
  background: var(--bg-surface);
}
.nav-btn.active {
  color: var(--text-primary);
  border-color: var(--border);
  background: var(--bg-surface);
}
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  border-radius: 9999px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  font-size: 11px;
  color: var(--text-secondary);
  font-family: 'DM Mono', monospace;
}
.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: background 0.2s;
}
.status-dot.ready { background: var(--success); box-shadow: 0 0 8px var(--success); }
.status-dot.busy  { background: var(--warning); box-shadow: 0 0 8px var(--warning); animation: pulse 1.2s infinite; }
.status-dot.error { background: var(--error); box-shadow: 0 0 8px var(--error); }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* === Update banner === */
.update-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px;
  background: linear-gradient(90deg, var(--accent-glow), transparent);
  border-bottom: 1px solid var(--border-accent);
  font-size: 13px;
}
.update-banner span { flex: 1; }

/* === Layout =================================================
   On the editor page, the app fills the viewport — sidebar scrolls
   independently and the canvas is never cut off. Other pages
   (about.html, etc.) scroll normally. */
body.app-page,
body.app-page > html {
  height: 100%;
  overflow: hidden;
}
html { height: 100%; }
body.app-page { height: 100vh; overflow: hidden; }
.app-grid {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  height: calc(100vh - var(--topbar-h));
  overflow: hidden;
}
.sidebar {
  padding: 20px;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: var(--bg-base);
  overflow-y: auto;             /* Only the sidebar scrolls */
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--bg-hover) transparent;
}
.sidebar::-webkit-scrollbar { width: 8px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--bg-hover); border-radius: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }

.canvas-area {
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
  padding: 20px;
  overflow: hidden;             /* Canvas never causes scroll */
}

/* === Card === */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  animation: card-in 0.4s ease both;
}
@keyframes card-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.label {
  display: block;
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin: 0 0 8px 0;
  text-transform: uppercase;
}
.label:not(:first-child) { margin-top: 14px; }

.filename {
  margin: 0;
  font-size: 13px;
  font-weight: 500;
  word-break: break-all;
}
.meta-row {
  display: flex;
  gap: 10px;
  margin-top: 6px;
  margin-bottom: 12px;
}
.meta {
  font-size: 11px;
  color: var(--text-muted);
}

/* === Buttons === */
.btn-primary, .btn-ghost, .btn-danger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  border-color: var(--accent-light);
  color: #fff;
  box-shadow: 0 1px 0 rgba(255,255,255,0.1) inset;
}
.btn-primary:hover:not(:disabled) {
  background: var(--accent-light);
  box-shadow: var(--shadow-glow);
}
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text-secondary);
}
.btn-ghost:hover:not(:disabled) {
  background: var(--bg-surface);
  color: var(--text-primary);
  border-color: var(--border-focus);
}
.btn-ghost:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-danger {
  background: transparent;
  border-color: var(--error);
  color: var(--error);
}
.btn-danger:hover:not(:disabled) { background: rgba(248,113,113,0.1); }

.btn-full { width: 100%; }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-lg { padding: 12px 20px; font-size: 14px; }
.btn-icon { font-size: 14px; }

.actions { display: flex; flex-direction: column; gap: 10px; }

/* === Keyboard shortcuts hint === */
.shortcuts-hint {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 6px;
  font-size: 11px;
  color: var(--text-muted);
  padding: 12px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.shortcuts-hint .label { grid-column: 1 / -1; margin: 0 0 4px; }
.shortcuts-hint .shortcut {
  display: flex;
  align-items: center;
  gap: 4px;
}
.shortcuts-hint kbd {
  display: inline-block;
  padding: 1px 5px;
  background: var(--bg-surface);
  border: 1px solid var(--border-focus);
  border-bottom-width: 2px;
  border-radius: 3px;
  font-family: 'DM Mono', monospace;
  font-size: 10px;
  color: var(--text-primary);
  margin-right: 2px;
}

/* === Status card === */
.status-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.status-row-inline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  font-size: 12px;
}
.status-row-inline .label {
  margin: 0;
  font-size: 10px;
}
.status-mini {
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  color: var(--text-secondary);
  text-align: right;
}
.status-mini.ok { color: var(--success); }
.status-mini.warn { color: var(--warning); }
.status-mini.error { color: var(--error); }
.status-card .btn-ghost { margin-top: 4px; }

/* === Privacy note === */
.privacy-note {
  background: rgba(74, 222, 128, 0.06);
  border: 1px solid rgba(74, 222, 128, 0.2);
  padding: 10px 12px;
  border-radius: var(--radius-md);
  font-size: 12px;
  color: var(--success);
  text-align: center;
}
.privacy-note p { margin: 0; }

/* === Badge === */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 9999px;
  font-size: 11px;
  letter-spacing: 0.05em;
  background: var(--accent-glow);
  border: 1px solid var(--border-accent);
  color: var(--text-accent);
  text-transform: uppercase;
}
.badge.success {
  background: rgba(74, 222, 128, 0.1);
  border-color: var(--success);
  color: var(--success);
}
.badge.warning {
  background: rgba(251, 146, 60, 0.1);
  border-color: var(--warning);
  color: var(--warning);
}

/* === Inputs === */
.radio-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.radio-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: var(--radius-md);
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s;
}
.radio-group label:hover { background: var(--bg-surface); }
.radio-group input[type="radio"] {
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1.5px solid var(--border-focus);
  margin: 0;
  position: relative;
  cursor: pointer;
}
.radio-group input[type="radio"]:checked {
  border-color: var(--accent-light);
}
.radio-group input[type="radio"]:checked::after {
  content: '';
  position: absolute;
  inset: 2px;
  border-radius: 50%;
  background: var(--accent-light);
}

.slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 9999px;
  background: var(--bg-surface);
  outline: none;
  margin: 8px 0;
}
.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent-light);
  cursor: pointer;
  transition: transform 0.1s, box-shadow 0.15s;
}
.slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 0 0 4px var(--accent-glow);
}
.slider::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent-light);
  border: none;
  cursor: pointer;
}
.slider-sm { width: 120px; margin: 0; }
.slider-value {
  display: inline-block;
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  color: var(--text-muted);
}

.select {
  width: 100%;
  padding: 8px 10px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 13px;
  outline: none;
}
.select:focus {
  border-color: var(--border-accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.select-toolbar {
  width: auto;
  min-width: 180px;
  padding: 6px 10px;
  font-size: 12px;
}

/* === Dropzone === */
.dropzone {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px dashed var(--border-focus);
  border-radius: var(--radius-xl);
  padding: 32px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all 0.2s;
  min-height: 400px;
}
.dropzone::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, var(--accent-glow) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.3s;
}
.dropzone:hover::before,
.dropzone.drag-over::before { opacity: 1; }
.dropzone:hover {
  border-color: var(--border-accent);
}
.dropzone.drag-over {
  border-color: var(--accent-light);
  box-shadow: var(--shadow-glow);
}
.dropzone-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}
.dropzone-icon {
  width: 56px;
  height: 56px;
  color: var(--accent-light);
  stroke: currentColor;
}
.dropzone-title {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.dropzone-sub {
  margin: 0;
  color: var(--text-secondary);
  font-size: 13px;
}
.dropzone-formats {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
}

/* === Editor === */
.editor {
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 12px;
  min-height: 0;
}
.toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  flex-wrap: wrap;
}
.tool-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 13px;
  font-family: inherit;
  transition: all 0.15s;
}
.tool-btn:hover {
  background: var(--bg-surface);
  color: var(--text-primary);
}
.tool-btn.active {
  background: var(--accent-glow);
  border-color: var(--border-accent);
  color: var(--text-accent);
}
.tool-icon { font-size: 14px; }
.tool-label {
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
}
.separator {
  width: 1px;
  height: 22px;
  background: var(--border);
  margin: 0 4px;
}

.stage {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    linear-gradient(45deg, var(--bg-card) 25%, transparent 25%),
    linear-gradient(-45deg, var(--bg-card) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--bg-card) 75%),
    linear-gradient(-45deg, transparent 75%, var(--bg-card) 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
  background-color: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  min-height: 0;
  overflow: hidden;
  position: relative;
}

/* BEFORE/AFTER label that floats on top of the video result */
.preview-label {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 6;
  padding: 6px 14px;
  border-radius: 9999px;
  background: rgba(9, 9, 11, 0.85);
  border: 1px solid var(--border-accent);
  color: #fff;
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-md);
  pointer-events: none;
  animation: fade-in 0.2s ease;
}
.preview-label.after {
  border-color: var(--success);
  color: var(--success);
}
.preview-label.before {
  border-color: var(--text-muted);
  color: var(--text-secondary);
}

/* Stage hint — dark pill with bright text for high contrast */
.stage-hint {
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(9, 9, 11, 0.85);
  border: 1px solid var(--border-accent);
  color: #fff;
  padding: 8px 18px;
  border-radius: 9999px;
  font-size: 13px;
  font-weight: 500;
  pointer-events: none;
  animation: hint-bounce 2s ease-in-out infinite;
  z-index: 5;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md), 0 0 18px var(--accent-glow);
}
.stage-hint p { margin: 0; }
@keyframes hint-bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%      { transform: translateX(-50%) translateY(-4px); }
}

/* PROCESSING OVERLAY — huge, can't miss */
.processing-overlay {
  position: absolute;
  inset: 0;
  background: rgba(9, 9, 11, 0.85);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 30;
  animation: fade-in 0.2s ease;
}
@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.processing-card {
  text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-xl);
  padding: 32px 40px;
  min-width: 320px;
  box-shadow: var(--shadow-glow), var(--shadow-md);
  animation: card-pop 0.3s ease;
}
@keyframes card-pop {
  from { opacity: 0; transform: scale(0.92); }
  to   { opacity: 1; transform: scale(1); }
}
.spinner-large {
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  border: 4px solid var(--bg-surface);
  border-top-color: var(--accent-light);
  border-right-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  box-shadow: 0 0 24px var(--accent-glow);
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
.processing-card h3 {
  margin: 0 0 6px;
  font-size: 18px;
  font-weight: 700;
}
.processing-sub {
  margin: 0 0 18px;
  font-size: 13px;
  color: var(--text-secondary);
}
.processing-card .progress-track {
  height: 8px;
  margin-bottom: 10px;
}
.processing-stage {
  margin: 0;
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  color: var(--text-muted);
}

/* Stage modal — for "draw a mask first" warnings */
.stage-modal {
  position: absolute;
  inset: 0;
  background: rgba(9, 9, 11, 0.75);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 25;
  animation: fade-in 0.18s ease;
}
.stage-modal-card {
  text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 28px 32px;
  max-width: 380px;
  animation: card-pop 0.25s ease;
}
.stage-modal-icon {
  font-size: 42px;
  margin-bottom: 10px;
}
.stage-modal-card h3 {
  margin: 0 0 8px;
  font-size: 18px;
}
.stage-modal-card p {
  margin: 0 0 20px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Button spinner state */
.btn-primary.loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}
.btn-primary.loading::after {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 18px; height: 18px;
  margin: -9px 0 0 -9px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

/* Primary-tool variant for Auto-guess */
.tool-btn.primary-tool {
  background: var(--accent-glow);
  border-color: var(--border-accent);
  color: var(--text-accent);
  font-weight: 600;
}
.tool-btn.primary-tool:hover {
  background: var(--accent);
  color: #fff;
}
.tool-btn.tool-danger {
  color: var(--error);
  border-color: transparent;
}
.tool-btn.tool-danger:hover {
  background: rgba(248, 113, 113, 0.12);
  border-color: var(--error);
}
/* Stack all three canvases in the same grid cell so they overlap perfectly.
   No more flex+absolute trickery — the mask always lines up with the image. */
.canvas-wrap {
  position: relative;
  width: 100%;
  height: 100%;
  display: grid;
  place-items: center;
  overflow: hidden;
}
.canvas-wrap canvas {
  grid-column: 1;
  grid-row: 1;
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
}
#canvas-image {
  z-index: 0;
  border-radius: var(--radius-md);
  box-shadow: 0 0 0 1px var(--border);
}
#canvas-result {
  z-index: 1;
  border-radius: var(--radius-md);
  box-shadow: 0 0 0 1px var(--border);
}
#canvas-mask {
  z-index: 2;
  pointer-events: auto;
  cursor: crosshair;
  opacity: 1;
}

/* Video preview elements stack in the same grid cell as the canvases */
.canvas-wrap > video {
  grid-column: 1;
  grid-row: 1;
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  border-radius: var(--radius-md);
  background: #000;
  z-index: 3;  /* above canvases */
  box-shadow: 0 0 0 1px var(--border);
}
#video-result { z-index: 4; }  /* result on top of original when both visible */

/* === Progress bar === */
.progress-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.progress-track {
  flex: 1;
  position: relative;
  height: 6px;
  background: var(--bg-surface);
  border-radius: 9999px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  border-radius: 9999px;
  transition: width 0.2s ease;
  position: relative;
  z-index: 1;
}
.progress-shimmer {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  animation: shimmer 1.5s infinite;
  z-index: 2;
}
@keyframes shimmer {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(200%); }
}

/* Indeterminate state: bar pulses left-right at 15% width, replacing the
   fake-progress climb. Honest UX — we don't know how long inference takes. */
.progress-fill.indeterminate {
  animation: indeterminate 1.8s ease-in-out infinite;
  background: linear-gradient(90deg, var(--accent), var(--accent-light), var(--accent));
  background-size: 200% 100%;
}
@keyframes indeterminate {
  0%   { width: 15%; margin-left: 0%; background-position: 0% 0; }
  50%  { width: 25%; margin-left: 75%; background-position: 100% 0; }
  100% { width: 15%; margin-left: 0%; background-position: 0% 0; }
}
.progress-label {
  font-size: 12px;
  color: var(--text-secondary);
  font-family: 'DM Mono', monospace;
  min-width: 120px;
  text-align: right;
}

/* === Model loader overlay === */
.model-loader {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(124, 58, 237, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 80%, rgba(124, 58, 237, 0.06) 0%, transparent 50%),
    rgba(9, 9, 11, 0.95);
  backdrop-filter: blur(12px);
  padding: 20px;
  animation: fade-in 0.3s ease;
}
.loader-card {
  position: relative;
  background:
    linear-gradient(180deg, var(--bg-card), var(--bg-elevated));
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 44px 44px 36px;
  max-width: 540px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow-md), 0 0 60px rgba(124, 58, 237, 0.18);
  overflow: hidden;
}
.loader-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, var(--accent-light), transparent 40%, transparent 60%, var(--accent-light));
  -webkit-mask: linear-gradient(#000, #000) content-box, linear-gradient(#000, #000);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0.4;
}
.loader-logo {
  width: 220px;
  max-width: 80%;
  height: auto;
  margin: 0 auto 24px;
  display: block;
  filter: drop-shadow(0 0 32px var(--accent-glow));
}
.loader-card h2 {
  margin: 0 0 6px 0;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.loader-card {
  padding: 44px 44px 36px;
  max-width: 540px;
}
.loader-card .progress-track {
  margin: 24px 0 14px;
  height: 8px;
}
.loader-meta {
  margin: 0;
  font-size: 12px;
  color: var(--text-secondary);
}
.loader-tip {
  margin: 18px 0 0;
  font-size: 11px;
  opacity: 0.7;
}

/* === Centered page (offline, fallback) === */
.centered-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
}
.message-card {
  max-width: 480px;
  text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 36px;
}
.message-logo {
  width: 56px;
  margin: 0 auto 16px;
}
.message-card h1 {
  margin: 0 0 10px;
  font-size: 22px;
}
.message-footer {
  margin-top: 28px;
  font-size: 12px;
}

/* === Debug panel === */
.debug-toggle {
  position: fixed;
  bottom: 16px;
  right: 16px;
  /* HUGE z-index so it stays clickable even over the processing overlay */
  z-index: 9999;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 1px solid var(--border-accent);
  color: var(--text-accent);
  font-size: 20px;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
}
.debug-toggle:hover {
  background: var(--bg-hover);
  transform: scale(1.05);
}

.debug-panel {
  position: fixed;
  bottom: 74px;
  right: 16px;
  /* Even higher than the toggle so its buttons always work, including
     during the processing overlay or any modal. */
  z-index: 9998;
  width: 340px;
  max-height: calc(100vh - 110px);
  background: var(--bg-elevated);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md), var(--shadow-glow);
  display: flex;
  flex-direction: column;
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  overflow: hidden;
}
.debug-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  font-weight: 600;
}
.debug-close {
  background: transparent;
  border: 0;
  color: var(--text-muted);
  font-size: 14px;
  cursor: pointer;
  padding: 0 4px;
}
.debug-close:hover { color: var(--text-primary); }
.debug-body {
  padding: 8px 14px 14px;
  overflow-y: auto;
}
.debug-section {
  margin: 8px 0;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}
.debug-section:last-of-type { border-bottom: none; }
.debug-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 3px 0;
  font-size: 11px;
}
.debug-row span { color: var(--text-muted); }
.debug-row b {
  font-weight: 500;
  color: var(--text-primary);
  font-family: 'DM Mono', monospace;
}
.debug-row b.ok { color: var(--success); }
.debug-row b.warn { color: var(--warning); }
.debug-row b.error { color: var(--error); }
.dbg-error-text { font-size: 10px; max-width: 180px; text-align: right; word-break: break-word; }
.debug-actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 8px;
}
.debug-actions .btn-ghost { flex: 1; min-width: 80px; font-size: 11px; padding: 5px 8px; }
.debug-log-wrap { margin-top: 12px; }
.debug-log-wrap summary {
  cursor: pointer;
  color: var(--text-muted);
  font-size: 11px;
  padding: 4px 0;
}
.debug-log {
  max-height: 200px;
  overflow-y: auto;
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px;
  font-size: 10px;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--text-secondary);
  margin: 6px 0 0;
}

/* === Toast === */
.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
  max-width: 400px;
}
.toast {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent-light);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  font-size: 13px;
  line-height: 1.45;
  box-shadow: var(--shadow-md);
  pointer-events: auto;
  cursor: pointer;
  overflow: hidden;
  animation: toast-in 0.22s ease;
  max-width: 400px;
}
.toast.toast-success { border-left-color: var(--success); }
.toast.toast-warning { border-left-color: var(--warning); }
.toast.toast-error { border-left-color: var(--error); }
.toast.toast-info { border-left-color: var(--info); }

.toast-icon {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 700;
  background: var(--bg-surface);
  color: var(--text-secondary);
  flex-shrink: 0;
}
.toast-success .toast-icon { background: rgba(74,222,128,0.15); color: var(--success); }
.toast-warning .toast-icon { background: rgba(251,146,60,0.15); color: var(--warning); }
.toast-error   .toast-icon { background: rgba(248,113,113,0.15); color: var(--error); }
.toast-info    .toast-icon { background: rgba(96,165,250,0.15); color: var(--info); }

.toast-msg {
  color: var(--text-primary);
  word-break: break-word;
}
.toast-close {
  background: transparent;
  border: 0;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 14px;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  transition: background 0.15s, color 0.15s;
}
.toast-close:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}
.toast-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  height: 2px;
  width: 100%;
  background: var(--accent-light);
  opacity: 0.55;
  transform-origin: left;
  animation: toast-shrink linear forwards;
}
.toast-success .toast-progress { background: var(--success); }
.toast-warning .toast-progress { background: var(--warning); }
.toast-error   .toast-progress { background: var(--error); }
.toast-info    .toast-progress { background: var(--info); }
.toast-leaving {
  animation: toast-out 0.2s ease forwards;
}
@keyframes toast-in {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes toast-out {
  to { opacity: 0; transform: translateX(20px); }
}
@keyframes toast-shrink {
  from { transform: scaleX(1); }
  to   { transform: scaleX(0); }
}

/* === Utilities === */
.text-muted { color: var(--text-muted); }
.ml-auto { margin-left: auto; }
[hidden] { display: none !important; }

/* === Responsive === */
@media (max-width: 900px) {
  .app-grid {
    grid-template-columns: 1fr;
  }
  .sidebar {
    border-right: none;
    border-bottom: 1px solid var(--border);
    flex-direction: row;
    overflow-x: auto;
    padding: 12px;
  }
  .sidebar .card { min-width: 240px; flex-shrink: 0; }
  .topbar { padding: 0 12px; }
  .nav-btn { padding: 6px 10px; font-size: 12px; }
  .brand-name { font-size: 15px; }
}