/* ========================================
   Local Office Toolkit — Vibrant System
   Direction B: Category-color-driven design
   ======================================== */

/* ----- Custom Properties ----- */
:root {
  /* Category colors */
  --cat-pdf: #2563EB;
  --cat-pdf-soft: #EFF3FF;
  --cat-pdf-glow: rgba(37,99,235,0.12);
  --cat-image: #059669;
  --cat-image-soft: #ECFDF5;
  --cat-image-glow: rgba(5,150,105,0.12);
  --cat-scan: #D97706;
  --cat-scan-soft: #FFF7ED;
  --cat-scan-glow: rgba(217,119,6,0.12);
  --cat-util: #7C3AED;
  --cat-util-soft: #F5F3FF;
  --cat-util-glow: rgba(124,58,237,0.12);

  /* Surfaces */
  --bg: #F7F8FA;
  --bg-card: #FFFFFF;
  --bg-header: rgba(255,255,255,0.82);
  --bg-input: #F1F5F9;
  --bg-hover: #EEF2F6;
  --bg-toolbar: #FFFFFF;

  /* Borders */
  --border: #E5E9F0;
  --border-light: #F0F2F5;
  --border-focus: #93B4F5;

  /* Text */
  --text: #1A1F2E;
  --text-secondary: #5B677D;
  --text-muted: #8E99B0;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.03);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 1px 3px rgba(15,23,42,0.06), 0 1px 2px rgba(15,23,42,0.04);
  --shadow-md: 0 4px 8px rgba(15,23,42,0.06), 0 2px 4px rgba(15,23,42,0.04);
  --shadow-lg: 0 12px 24px rgba(15,23,42,0.08), 0 4px 8px rgba(15,23,42,0.04);
  --shadow-xl: 0 20px 40px rgba(15,23,42,0.1), 0 8px 16px rgba(15,23,42,0.04);

  /* Radius scale */
  --radius-xs: 6px;
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 999px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 150ms;
  --duration: 200ms;
  --duration-slow: 300ms;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: "SF Mono", "Fira Code", "JetBrains Mono", "Cascadia Code", "Consolas", monospace;
}

/* ----- Dark Mode ----- */
[data-theme="dark"] {
  --bg: #0C1222;
  --bg-card: #151D30;
  --bg-header: rgba(12,18,34,0.85);
  --bg-input: #1D283E;
  --bg-hover: #1D283E;
  --bg-toolbar: #151D30;

  --border: #1E2A42;
  --border-light: #182032;
  --border-focus: #3B5BA8;

  --text: #E8ECF4;
  --text-secondary: #8B99BB;
  --text-muted: #5B6A8A;

  --shadow-xs: 0 1px 2px rgba(0,0,0,0.2);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow: 0 1px 3px rgba(0,0,0,0.35);
  --shadow-md: 0 4px 8px rgba(0,0,0,0.35);
  --shadow-lg: 0 12px 24px rgba(0,0,0,0.4);
  --shadow-xl: 0 20px 40px rgba(0,0,0,0.5);

  /* Softer category colors for dark */
  --cat-pdf: #5B9AFF;
  --cat-pdf-soft: rgba(91,154,255,0.1);
  --cat-pdf-glow: rgba(91,154,255,0.08);
  --cat-image: #34D399;
  --cat-image-soft: rgba(52,211,153,0.1);
  --cat-image-glow: rgba(52,211,153,0.08);
  --cat-scan: #FBBF24;
  --cat-scan-soft: rgba(251,191,36,0.1);
  --cat-scan-glow: rgba(251,191,36,0.08);
  --cat-util: #A78BFA;
  --cat-util-soft: rgba(167,139,250,0.1);
  --cat-util-glow: rgba(167,139,250,0.08);
}

/* ----- Reset ----- */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { font-size:16px; -webkit-text-size-adjust:100%; -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh; min-height: 100dvh;
  transition: background var(--duration) var(--ease-out), color var(--duration) var(--ease-out);
}
.hidden { display:none !important; }

/* ----- Focus Ring ----- */
:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
  border-radius: var(--radius-xs);
}

/* ========================================
   HEADER
   ======================================== */
.app-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--bg-header);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: 1200px; margin: 0 auto;
  padding: 12px 20px;
  display: flex; align-items: center; gap: 16px;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.15rem; font-weight: 700;
  color: var(--text); letter-spacing: -0.01em;
  flex: 1; text-decoration: none;
}
.logo-icon {
  width: 32px; height: 32px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--cat-pdf), var(--cat-util));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 0.9rem; font-weight: 800;
}
.header-actions { display:flex; gap:6px; }
.icon-btn {
  width: 38px; height: 38px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: all var(--duration-fast) var(--ease-out);
}
.icon-btn:hover { background: var(--bg-hover); color: var(--text); border-color: var(--text-muted); }
.icon-btn:active { transform: scale(0.95); }

[data-theme="dark"] .icon-sun, [data-theme="light"] .icon-moon,
:root:not([data-theme="dark"]) .icon-moon { display:none; }

/* ========================================
   MAIN CONTENT
   ======================================== */
.main-content {
  max-width: 1200px; margin: 0 auto;
  padding: 28px 20px 40px;
  min-height: calc(100vh - 80px);
}


/* ----- Section headers ----- */
.section-header {
  margin: 32px 0 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border-light);
}
.section-header:first-child { margin-top: 0; }
.section-header h3 {
  font-size: 1.15rem; font-weight: 700; letter-spacing: -0.01em;
  color: var(--text);
}
.section-header p {
  font-size: 0.82rem; color: var(--text-muted);
  margin-top: 2px;
}
.section-header[data-color="pdf"]    { border-color: var(--cat-pdf-glow); }
.section-header[data-color="pdf"] h3 { color: var(--cat-pdf); }
.section-header[data-color="image"]  { border-color: var(--cat-image-glow); }
.section-header[data-color="image"] h3 { color: var(--cat-image); }
.section-header[data-color="scan"]   { border-color: var(--cat-scan-glow); }
.section-header[data-color="scan"] h3 { color: var(--cat-scan); }
.section-header[data-color="util"]   { border-color: var(--cat-util-glow); }
.section-header[data-color="util"] h3 { color: var(--cat-util); }

/* ----- Tool home wrapper ----- */
.tool-home {}

/* ========================================
   CARDS GRID
   ======================================== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
}

.tool-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 20px 20px;
  cursor: pointer;
  transition: all var(--duration) var(--ease-out);
  box-shadow: var(--shadow-xs);
  display: flex; flex-direction: column; gap: 10px;
  overflow: hidden;
}
.tool-card::before {
  content: '';
  position: absolute; inset: 0;
  opacity: 0; transition: opacity var(--duration) var(--ease-out);
  border-radius: inherit; z-index: 0;
  pointer-events: none;
}
.tool-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.tool-card:hover::before { opacity: 1; }
.tool-card:active { transform: translateY(-1px); box-shadow: var(--shadow); }

/* Category glow overlay on hover */
.tool-card[data-category="pdf"]:hover::before    { background: var(--cat-pdf-glow); }
.tool-card[data-category="image"]:hover::before  { background: var(--cat-image-glow); }
.tool-card[data-category="scan"]:hover::before   { background: var(--cat-scan-glow); }
.tool-card[data-category="utility"]:hover::before{ background: var(--cat-util-glow); }

/* Icon container */
.card-icon-wrap {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; position: relative; z-index: 1;
  transition: transform var(--duration) var(--ease-out);
}
.tool-card:hover .card-icon-wrap { transform: scale(1.08); }

.tool-card[data-category="pdf"] .card-icon-wrap     { background: var(--cat-pdf-soft); color: var(--cat-pdf); }
.tool-card[data-category="image"] .card-icon-wrap   { background: var(--cat-image-soft); color: var(--cat-image); }
.tool-card[data-category="scan"] .card-icon-wrap    { background: var(--cat-scan-soft); color: var(--cat-scan); }
.tool-card[data-category="utility"] .card-icon-wrap { background: var(--cat-util-soft); color: var(--cat-util); }

.card-icon-wrap svg { width: 22px; height: 22px; }

.card-body { position:relative; z-index:1; }
.card-title {
  font-size: 0.95rem; font-weight: 600; color: var(--text);
  letter-spacing: -0.01em; line-height: 1.3;
}
.card-desc {
  font-size: 0.8rem; color: var(--text-muted);
  line-height: 1.45; margin-top: 3px;
}

/* ========================================
   TOOL WORKSPACE
   ======================================== */
.tool-workspace {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  animation: workspaceIn var(--duration-slow) var(--ease-out);
}
@keyframes workspaceIn {
  from { opacity:0; transform:translateY(8px); }
  to   { opacity:1; transform:translateY(0); }
}

.back-nav {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 20px; padding-bottom: 16px;
  border-bottom: 1px solid var(--border-light);
}
.back-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 0.85rem; font-weight: 500;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}
.back-btn:hover { background: var(--bg-hover); color: var(--text); }
.back-btn:active { transform: scale(0.97); }
.tool-breadcrumb {
  font-size: 0.85rem; color: var(--text-muted);
  font-weight: 500;
}
.tool-container { animation: fadeIn var(--duration) var(--ease-out); }
@keyframes fadeIn { from{opacity:0} to{opacity:1} }

/* ----- Shared form elements ----- */
.form-group { margin-bottom: 16px; }
.form-label {
  display: block; font-size: 0.85rem; font-weight: 600;
  color: var(--text); margin-bottom: 6px;
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--text);
  font-size: 0.9rem; font-family: var(--font-sans);
  transition: all var(--duration-fast) var(--ease-out);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none; border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}
.form-textarea { resize:vertical; min-height:80px; }
.form-hint { font-size:0.78rem; color:var(--text-muted); margin-top:4px; }
.form-row { display:flex; gap:10px; align-items:end; flex-wrap:wrap; }

/* ----- Buttons ----- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 18px; border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.875rem; font-weight: 550; font-family: var(--font-sans);
  cursor: pointer; white-space: nowrap;
  transition: all var(--duration-fast) var(--ease-out);
  background: var(--bg-card); color: var(--text);
}
.btn:hover { background: var(--bg-hover); }
.btn:active { transform: scale(0.97); }
.btn-primary {
  background: var(--cat-pdf); color: #fff; border-color: var(--cat-pdf);
}
.btn-primary:hover { filter: brightness(1.1); }
.btn-success { background:var(--cat-image); color:#fff; border-color:var(--cat-image); }
.btn-success:hover { filter: brightness(1.1); }
.btn-warning { background:var(--cat-scan); color:#fff; border-color:var(--cat-scan); }
.btn-warning:hover { filter: brightness(1.1); }
.btn-danger { background:#EF4444; color:#fff; border-color:#EF4444; }
.btn-danger:hover { filter: brightness(1.1); }
.btn-sm { padding:5px 12px; font-size:0.8rem; }
.btn-lg { padding:12px 24px; font-size:1rem; }
.btn:disabled { opacity:0.5; cursor:not-allowed; pointer-events:none; }
.btn-group { display:flex; gap:8px; flex-wrap:wrap; margin-top:12px; }

/* ----- Drop zone ----- */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 36px 20px;
  text-align: center;
  cursor: pointer;
  transition: all var(--duration) var(--ease-out);
  background: var(--bg);
}
.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--cat-pdf);
  background: var(--cat-pdf-soft);
}
.drop-zone-icon {
  font-size: 2.2rem; margin-bottom: 10px; display: block;
}
.drop-zone-text { font-size:0.9rem; color:var(--text-secondary); }
.drop-zone-hint { font-size:0.78rem; color:var(--text-muted); margin-top:6px; }
.file-list { margin-top:14px; display:flex; flex-direction:column; gap:6px; }
.file-item {
  display:flex; align-items:center; gap:10px;
  padding:8px 12px; background:var(--bg);
  border-radius:var(--radius-sm); font-size:0.85rem;
}
.file-item .file-name { flex:1; color:var(--text); }
.file-item .file-size { color:var(--text-muted); font-size:0.78rem; }
.file-item .file-remove {
  cursor:pointer; color:var(--text-muted);
  font-size:1.1rem; line-height:1; padding:2px 4px;
}
.file-item .file-remove:hover { color:#EF4444; }

/* ========================================
   PROGRESS / RESULT
   ======================================== */
.progress-bar-wrap {
  width:100%; height:6px; background:var(--bg-input);
  border-radius:var(--radius-full); overflow:hidden; margin-top:12px;
}
.progress-bar-fill {
  height:100%; border-radius:var(--radius-full);
  background: linear-gradient(90deg, var(--cat-pdf), var(--cat-util));
  transition: width 0.4s var(--ease-out);
}
.result-area { margin-top:16px; }
.result-preview {
  border:1px solid var(--border); border-radius:var(--radius);
  padding:16px; background:var(--bg);
  max-height:300px; overflow-y:auto;
}

/* ========================================
   MODAL
   ======================================== */
.modal-overlay {
  position:fixed; inset:0; z-index:200;
  background: rgba(0,0,0,0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display:flex; align-items:center; justify-content:center;
  animation: fadeIn var(--duration-fast) var(--ease-out);
  padding: 20px;
}
.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  max-width: 420px; width: 100%;
  box-shadow: var(--shadow-xl);
  animation: modalIn var(--duration-slow) var(--ease-out);
}
@keyframes modalIn {
  from { opacity:0; transform:scale(0.95) translateY(8px); }
  to   { opacity:1; transform:scale(1) translateY(0); }
}
.modal-content h2 {
  font-size: 1.2rem; font-weight: 700; margin-bottom: 14px;
  letter-spacing: -0.01em;
}
.modal-content p { font-size:0.88rem; color:var(--text-secondary); margin-bottom:8px; }
.feature-list {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin: 14px 0;
}
.feature-list span {
  padding: 5px 10px; border-radius: var(--radius-full);
  background: var(--bg); font-size: 0.78rem; color: var(--text-secondary);
}
.version-text {
  font-size: 0.78rem; color: var(--text-muted);
  text-align: center; margin: 12px 0;
}
.modal-close { margin-top:12px; width:100%; }

/* ========================================
   TOASTS
   ======================================== */
.toast-container {
  position: fixed; top: 20px; right: 20px; z-index: 300;
  display: flex; flex-direction: column; gap: 8px;
  pointer-events: none; max-width: 360px;
}
.toast {
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem; font-weight: 500;
  box-shadow: var(--shadow-lg);
  pointer-events: auto;
  animation: toastIn var(--duration-slow) var(--ease-out);
  display: flex; align-items: center; gap: 8px;
}
@keyframes toastIn {
  from { opacity:0; transform:translateX(20px); }
  to   { opacity:1; transform:translateX(0); }
}
.toast-success { background:#ECFDF5; color:#065F46; border:1px solid #A7F3D0; }
.toast-error   { background:#FEF2F2; color:#991B1B; border:1px solid #FECACA; }
.toast-info    { background:#EFF6FF; color:#1E40AF; border:1px solid #BFDBFE; }
[data-theme="dark"] .toast-success { background:#064E3B; color:#A7F3D0; border-color:#065F46; }
[data-theme="dark"] .toast-error   { background:#7F1D1D; color:#FECACA; border-color:#991B1B; }
[data-theme="dark"] .toast-info    { background:#1E3A5F; color:#BFDBFE; border-color:#1E40AF; }

/* ========================================
   SPECIALIZED COMPONENTS
   ======================================== */

/* PDF page preview canvas */
.page-preview {
  border:1px solid var(--border); border-radius:var(--radius-xs);
  box-shadow: var(--shadow-sm);
}

/* PDF compress slider */
.range-input { width:100%; accent-color:var(--cat-pdf); }
.range-value { font-weight:600; color:var(--cat-pdf); }

/* Cropper */
.crop-container {
  position:relative; max-width:100%; overflow:hidden;
  border:1px solid var(--border); border-radius:var(--radius);
  margin-top:16px;
}
.crop-container img { display:block; max-width:100%; }
.crop-overlay { position:absolute; inset:0; background:rgba(0,0,0,0.45); }
.crop-box { position:absolute; border:2px dashed #fff; cursor:move; }
.crop-handle {
  position:absolute; width:12px; height:12px;
  background:#fff; border:2px solid var(--cat-pdf);
  border-radius:50%;
}
.crop-handle.nw { top:-6px; left:-6px; cursor:nw-resize; }
.crop-handle.ne { top:-6px; right:-6px; cursor:ne-resize; }
.crop-handle.sw { bottom:-6px; left:-6px; cursor:sw-resize; }
.crop-handle.se { bottom:-6px; right:-6px; cursor:se-resize; }

/* Drag sort (PDF reorder) */
.sort-list {
  display:grid; grid-template-columns:repeat(auto-fill, minmax(110px,1fr));
  gap:10px; margin-top:16px;
}
.sort-item {
  position:relative; border:2px solid var(--border);
  border-radius:var(--radius-sm); overflow:hidden;
  cursor:grab; transition:all var(--duration-fast) var(--ease-out);
}
.sort-item:active { cursor:grabbing; }
.sort-item.dragging { opacity:0.4; border-color:var(--cat-pdf); }
.sort-item.drag-over { border-color:var(--cat-pdf); background:var(--cat-pdf-soft); }
.sort-item canvas { width:100%; display:block; }
.sort-item .page-num {
  position:absolute; bottom:3px; right:3px;
  background:rgba(0,0,0,0.65); color:#fff;
  font-size:0.68rem; padding:1px 6px; border-radius:4px;
  font-weight:600;
}

/* QR Code */
.qr-output {
  display:flex; flex-direction:column; align-items:center; gap:14px;
  margin-top:16px;
}
.qr-output canvas, .qr-output img {
  border:10px solid #fff; box-shadow:var(--shadow-md);
  border-radius:var(--radius-sm);
}

/* Markdown editor */
.markdown-editor { display:flex; gap:16px; margin-top:16px; }
.markdown-editor textarea {
  flex:1; min-height:400px;
  font-family:var(--font-mono); font-size:0.85rem; line-height:1.6;
}
.markdown-preview {
  flex:1; padding:18px; border:1px solid var(--border);
  border-radius:var(--radius-sm); background:var(--bg-card);
  overflow-y:auto; max-height:400px;
}
.markdown-preview h1 { font-size:1.5rem; margin:14px 0 8px; }
.markdown-preview h2 { font-size:1.25rem; margin:12px 0 6px; }
.markdown-preview h3 { font-size:1.1rem; margin:10px 0 4px; }
.markdown-preview p { margin-bottom:8px; }
.markdown-preview pre { background:var(--bg-input); padding:14px; border-radius:var(--radius-sm); overflow-x:auto; margin:10px 0; }
.markdown-preview code { background:var(--bg-input); padding:2px 6px; border-radius:4px; font-size:0.85em; font-family:var(--font-mono); }
.markdown-preview blockquote { border-left:3px solid var(--cat-pdf); padding-left:14px; color:var(--text-secondary); margin:10px 0; }
.markdown-preview table { border-collapse:collapse; width:100%; margin:10px 0; }
.markdown-preview th, .markdown-preview td { border:1px solid var(--border); padding:8px 12px; text-align:left; }
.markdown-preview th { background:var(--bg); font-weight:600; }

/* Camera */
.camera-view {
  position:relative; width:100%; max-width:640px; margin:0 auto;
  border-radius:var(--radius); overflow:hidden;
  border:2px solid var(--border);
}
.camera-view video { width:100%; display:block; }
.camera-view canvas { display:none; }
.camera-controls { display:flex; justify-content:center; gap:14px; margin-top:16px; }
.capture-btn {
  width:64px; height:64px; border-radius:50%;
  border:4px solid var(--cat-scan); background:#fff;
  cursor:pointer; display:flex; align-items:center; justify-content:center;
  transition:all var(--duration-fast) var(--ease-out);
}
.capture-btn:hover { transform:scale(1.08); }
.capture-btn .inner {
  width:48px; height:48px; border-radius:50%;
  background:var(--cat-scan);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width:768px) {
  .header-inner { padding:10px 14px; }
  .main-content { padding:20px 14px 32px; }
  .cards-grid { grid-template-columns:repeat(auto-fill, minmax(150px,1fr)); gap:10px; }
  .tool-card { padding:16px 14px; border-radius:var(--radius); }
  .card-icon-wrap { width:38px; height:38px; }
  .card-icon-wrap svg { width:20px; height:20px; }
  .card-title { font-size:0.85rem; }
  .card-desc { font-size:0.75rem; }
  .tool-workspace { padding:18px; }
  .markdown-editor { flex-direction:column; }
  .markdown-editor textarea, .markdown-preview { max-height:300px; }
  .btn-group { flex-direction:column; }
  .btn-group .btn { width:100%; }
  .form-row { flex-direction:column; }
  .toast-container { left:16px; right:16px; top:auto; bottom:16px; }
}

@media (max-width:480px) {
  .header-inner { padding:8px 10px; }
  .logo { font-size:0.95rem; }
  .logo-icon { width:28px; height:28px; font-size:0.75rem; }
  .main-content { padding:16px 10px 24px; }
  /* Single column on phone */
  .cards-grid { grid-template-columns:1fr; gap:8px; }
  .tool-card { flex-direction:row; align-items:center; gap:12px; padding:14px; border-radius:var(--radius); }
  .tool-card .card-icon-wrap { width:40px; height:40px; flex-shrink:0; }
  .tool-card .card-body { flex:1; }
  .card-desc { display:none; }
  .drop-zone { padding:24px 14px; }
  .modal-overlay { padding:12px; align-items:flex-end; }
  .modal-content { border-radius:var(--radius-lg) var(--radius-lg) 0 0; max-width:100%; }
}

/* ----- Additional Tool Utils ----- */
.btn-secondary {
  background: var(--bg-input);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--bg-hover); }

.progress-bar {
  width: 100%; height: 6px;
  background: var(--bg-input);
  border-radius: var(--radius-full);
  overflow: hidden; margin-top: 12px;
}
.progress-bar.hidden { display: none; }

.progress-text {
  font-size: 0.8rem; color: var(--text-secondary);
  margin-top: 6px;
}
.progress-text.hidden { display: none; }

.preview-container {
  margin-top: 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 4px; background: var(--bg);
  overflow: hidden;
}
.preview-container img,
.preview-container canvas {
  max-width: 100%; display: block;
  border-radius: var(--radius-xs);
}
.preview-container iframe {
  width: 100%; height: 500px;
  border: none;
}

.result-area .result-icon { font-size: 1.5rem; }
.result-area .result-text {
  flex: 1; font-size: 0.9rem;
  color: var(--cat-image);
}

/* Bare label fallback */
.form-group label {
  display: block; font-size: 0.85rem; font-weight: 600;
  color: var(--text); margin-bottom: 4px;
}