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

:root {
  /* ---- final locked palette ---- */
  --cream: #EFF1C5;
  --navy: #181C63;
  --paper: #E5E5E5;
  --ink: #00100B;
  --sky: #8ACDEA;
  --plum: #41393E;
  --green: #4F9D69;
  --maroon: #63181D;
  --maroon-deep: #4a1015;

  /* derived tints/shades, all built from the six colors above */
  --navy-deep: #10123f;
  --cream-soft: #f8f9ea;
  --sky-soft: #e7f5fb;
  --sky-deep: #2f8faf;
  --green-soft: #dcf0e3;
  --green-deep: #3a7a50;

  --bg: linear-gradient(160deg, var(--sky-soft) 0%, #f4f6f0 45%, var(--cream-soft) 100%);
  --bg-solid: #eef1ea;
  --surface: rgba(255, 255, 255, 0.72);
  --surface-solid: #ffffff;
  --border-color: rgba(24, 28, 99, 0.18);
  --border-color-soft: rgba(24, 28, 99, 0.10);

  --text: var(--ink);
  --text-soft: #4c4f57;

  --accent: var(--navy);
  --accent-2: var(--green);
  --accent-3: var(--sky);

  --focus-ring: 0 0 0 3px rgba(24, 28, 99, 0.28), 0 0 0 6px rgba(138, 205, 234, 0.55);
  --shadow-sm: 0 1px 2px rgba(16, 18, 63, 0.06);
  --shadow-md: 0 10px 30px rgba(16, 18, 63, 0.12);
  --shadow-lg: 0 24px 60px rgba(16, 18, 63, 0.18);
  --blur: blur(16px);
  --radius: 20px;

  --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.05'/%3E%3C/svg%3E");
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: radial-gradient(circle at 15% 0%, #1c2050 0%, #0a0c22 45%, #05060f 100%);
    --bg-solid: #0a0c22;
    --surface: rgba(24, 28, 99, 0.35);
    --surface-solid: #14163f;
    --border-color: rgba(138, 205, 234, 0.24);
    --border-color-soft: rgba(138, 205, 234, 0.12);
    --text: #f2f3ea;
    --text-soft: #b9bdc4;
    --accent: var(--sky);
    --accent-2: var(--green);
    --focus-ring: 0 0 0 3px rgba(138, 205, 234, 0.45), 0 0 0 6px rgba(79, 157, 105, 0.3);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.55);
    --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.08'/%3E%3C/svg%3E");
  }
}

body {
  font-family: 'Montserrat', sans-serif;
  background: var(--bg) fixed;
  background-color: var(--bg-solid);
  color: var(--text);
  line-height: 1.6;
  padding: 20px;
  min-height: 100vh;
  transition: background-color 0.3s, color 0.3s;
  position: relative;
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  z-index: -1;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.45;
  pointer-events: none;
  animation: drift 14s ease-in-out infinite alternate;
}

body::before {
  width: 420px;
  height: 420px;
  top: -120px;
  left: -100px;
  background: radial-gradient(circle, var(--sky) 0%, transparent 70%);
}

body::after {
  width: 460px;
  height: 460px;
  bottom: -140px;
  right: -120px;
  background: radial-gradient(circle, var(--green) 0%, transparent 70%);
  animation-delay: -9s;
}

@keyframes drift {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(40px, -30px) scale(1.12); }
}

@media (prefers-reduced-motion: reduce) {
  body::before, body::after { animation: none; }
}

a, button, input, select, textarea, [tabindex] {
  font-family: inherit;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
a:focus-visible,
[tabindex]:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: 8px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

.header {
  text-align: center;
  margin-bottom: 36px;
  padding-top: 8px;
}

.brand {
  display: flex;
  justify-content: center;
  margin-bottom: 6px;
}

.brand-logo {
  height: 40px;
  width: auto;
  filter: drop-shadow(0 4px 10px rgba(99, 24, 29, 0.2));
  transition: transform 0.2s;
}

.brand-logo:hover { transform: translateY(-2px) rotate(-1deg); }

@media (prefers-color-scheme: dark) {
  /* the logo's dark maroon key blends into a dark page, so lift it visually */
  .brand-logo {
    filter: drop-shadow(0 0 10px rgba(138, 205, 234, 0.35)) brightness(1.15);
  }
}

.header p {
  font-size: 1.05rem;
  color: var(--text-soft);
}

.controls,
.note-card,
.modal,
.note-page-header,
.draw-toolbar-floating,
.note-page-body {
  background-color: transparent;
  background-image: var(--grain), linear-gradient(var(--surface), var(--surface));
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  border: 1px solid var(--border-color-soft);
}

.controls {
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 20px;
  margin-bottom: 30px;
}

.controls-container {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

@media (min-width: 768px) {
  .controls-container { flex-direction: row; }
}

.search-input,
.filter-select,
.page-bg-size-select,
.add-category-input {
  border: 1px solid var(--border-color);
  border-radius: 10px;
  font-size: 1rem;
  background-color: var(--surface-solid);
  color: var(--text);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.search-input,
.filter-select { padding: 12px 15px; }

.search-input:focus,
.filter-select:focus {
  outline: none;
  border-color: var(--navy);
  box-shadow: var(--focus-ring);
}

.search-input::placeholder { color: var(--text-soft); }
.filter-select { cursor: pointer; }

.filter-group {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.add-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  background: linear-gradient(135deg, var(--navy), var(--maroon) 55%, var(--green-deep));
  background-size: 200% auto;
  color: white;
  border: 1px solid var(--navy-deep);
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, background-position 0.4s;
  white-space: nowrap;
  box-shadow: 0 6px 16px rgba(24, 28, 99, 0.3);
}

.add-btn:hover { transform: translateY(-2px); background-position: right center; }
.add-btn:active { transform: translateY(0); }

.delete-btn {
  background-color: rgba(239, 68, 68, 0.08);
  color: #d5304a;
  border: 1px solid rgba(239, 68, 68, 0.35);
  border-radius: 10px;
  padding: 10px 16px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  touch-action: manipulation;
  transition: background-color 0.15s, transform 0.1s;
}

.delete-btn:hover { background-color: rgba(239, 68, 68, 0.16); transform: translateY(-1px); }

/* ---------- Notes: Pinterest-style masonry, in its own colored panel ---------- */
.notes-grid {
  column-count: 1;
  column-gap: 20px;
  margin-top: 20px;
  margin-bottom: 30px;
  padding: 24px;
  border-radius: 28px;
  background-image: var(--grain),
    linear-gradient(150deg, rgba(138,205,234,0.32) 0%, rgba(79,157,105,0.16) 55%, rgba(239,241,197,0.4) 100%);
  border: 1px solid var(--border-color-soft);
}

@media (prefers-color-scheme: dark) {
  .notes-grid {
    background-image: var(--grain),
      linear-gradient(150deg, rgba(138,205,234,0.10) 0%, rgba(79,157,105,0.10) 55%, rgba(24,28,99,0.4) 100%);
  }
}

@media (min-width: 768px) { .notes-grid { column-count: 2; } }
@media (min-width: 1024px) { .notes-grid { column-count: 3; } }
@media (min-width: 1400px) { .notes-grid { column-count: 4; } }

.note-card {
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 20px;
  transition: transform 0.22s, box-shadow 0.22s, border-color 0.22s;
  cursor: pointer;
  display: inline-block;
  width: 100%;
  break-inside: avoid;
  margin-bottom: 20px;
  position: relative;
  overflow: hidden;
}

.note-card:nth-child(6n+1) { border-radius: 42px 22px 42px 22px / 32px 42px 32px 42px; transform: rotate(-1.4deg); }
.note-card:nth-child(6n+2) { border-radius: 22px 42px 22px 42px / 42px 32px 42px 32px; transform: rotate(1.1deg); }
.note-card:nth-child(6n+3) { border-radius: 50% 20px 50% 20px / 20px 50% 20px 50%; transform: rotate(-0.7deg); }
.note-card:nth-child(6n+4) { border-radius: 16px 46px 16px 46px; transform: rotate(0.9deg); }
.note-card:nth-child(6n+5) { border-radius: 34px; transform: rotate(-0.4deg); }
.note-card:nth-child(6n+6) { border-radius: 46px 16px 46px 16px / 16px 46px 16px 46px; transform: rotate(1.3deg); }

.note-card:hover {
  transform: translateY(-6px) rotate(0deg) scale(1.025);
  box-shadow: var(--shadow-md);
  border-color: rgba(24, 28, 99, 0.3);
}

.note-card::after {
  content: "✦";
  position: absolute;
  top: 10px;
  right: 14px;
  font-size: 0.85rem;
  opacity: 0.4;
  color: var(--navy);
  pointer-events: none;
}
.note-card:nth-child(4n+1)::after { content: "✦"; color: var(--green); }
.note-card:nth-child(4n+2)::after { content: "❀"; color: var(--sky-deep); }
.note-card:nth-child(4n+3)::after { content: "☁"; color: var(--maroon); }
.note-card:nth-child(4n+4)::after { content: "✿"; color: var(--green-deep); }

.empty-state { display: none; text-align: center; padding: 60px 20px; color: var(--text-soft); }
.empty-state.active { display: block; }
.empty-state i { font-size: 3rem; color: var(--sky); margin-bottom: 15px; }
.empty-state h3 { font-size: 1.3rem; margin-bottom: 8px; color: var(--text); }

.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(5, 6, 20, 0.45);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
}

.modal-overlay.active { opacity: 1; visibility: visible; }

.modal {
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 500px;
  margin: 20px;
  transform: translateY(20px);
  transition: transform 0.2s;
}

.modal-overlay.active .modal { transform: translateY(0); }
.modal-body { padding: 24px; }

.form-label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-soft);
}

.confirmation-modal { max-width: 380px; }
.confirmation-text { text-align: center; font-size: 1.05rem; margin-bottom: 20px; color: var(--text); }
.confirmation-buttons { display: flex; gap: 10px; }

.confirmation-btn {
  flex: 1;
  padding: 12px;
  border: 1px solid transparent;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.15s, transform 0.1s;
}

.cancel-btn { background-color: var(--surface-solid); color: var(--text); border-color: var(--border-color); }
.cancel-btn:hover { background-color: var(--paper); }
.confirm-btn { background-color: #ef4444; color: white; border-color: #dc2626; }
.confirm-btn:hover { background-color: #dc2626; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in { animation: fadeIn 0.3s ease; }

/* ---------- Full-page note editor ---------- */
.note-page {
  position: fixed;
  inset: 0;
  background: var(--bg);
  background-color: var(--bg-solid);
  z-index: 1000;
  transform: translateX(100%);
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.note-page.active { transform: translateX(0); }

.note-page::before,
.note-page::after {
  content: "";
  position: absolute;
  z-index: 0;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  pointer-events: none;
  animation: drift 16s ease-in-out infinite alternate;
}
.note-page::before {
  width: 360px; height: 360px;
  top: -80px; right: 8%;
  background: radial-gradient(circle, var(--green) 0%, transparent 70%);
}
.note-page::after {
  width: 400px; height: 400px;
  bottom: -100px; left: 6%;
  background: radial-gradient(circle, var(--sky) 0%, transparent 70%);
  animation-delay: -7s;
}
@media (prefers-reduced-motion: reduce) {
  .note-page::before, .note-page::after { animation: none; }
}

.note-page-header,
.note-page-scroll { position: relative; z-index: 1; }

.note-page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  box-shadow: var(--shadow-sm);
  z-index: 3;
  position: sticky;
  top: 0;
}

.note-page-header h3 { font-weight: 700; }
.note-page-header i { font-size: 1.2rem; cursor: pointer; color: var(--text-soft); transition: color 0.15s; }
.note-page-header i:hover { color: var(--navy); }

.save-btn-small {
  padding: 9px 20px;
  background: linear-gradient(135deg, var(--navy), var(--green-deep));
  background-size: 200% auto;
  color: white;
  border: 1px solid var(--navy-deep);
  border-radius: 20px;
  font-weight: 600;
  cursor: pointer;
  transition: background-position 0.4s, transform 0.1s;
}

.save-btn-small:hover { background-position: right center; transform: translateY(-1px); }

.draw-toolbar-floating {
  position: sticky;
  top: 0;
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  box-shadow: var(--shadow-sm);
}

.draw-toolbar-floating.hidden { display: none; }

.note-page-scroll { flex: 1; overflow-y: visible; padding: 32px 20px 80px; }

.note-page-body {
  max-width: 1100px;
  margin: 0 auto;
  border-radius: 26px;
  box-shadow: var(--shadow-lg);
  padding: 48px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: calc(100vh - 220px);
}

@media (max-width: 640px) {
  .note-page-body { padding: 24px; border-radius: 16px; }
}

.note-page-title {
  font-size: 1.85rem;
  font-weight: 700;
  border: none;
  outline: none;
  background: transparent;
  color: var(--text);
  font-family: 'Montserrat', sans-serif;
}

.note-page-title::placeholder { color: var(--text-soft); opacity: 0.6; }
.page-canvas-wrapper { position: relative; }

.note-page-content {
  min-height: 400px;
  border: none;
  outline: none;
  font-size: 1.05rem;
  font-family: 'Montserrat', sans-serif;
  line-height: 1.7;
  color: var(--text);
}

.note-page-content img {
  max-width: 100%;
  border-radius: 10px;
  margin: 8px 0;
  display: block;
  box-shadow: var(--shadow-sm);
}

#drawingCanvas {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  touch-action: pan-y;
}

#drawingCanvas.draw-active { pointer-events: auto; touch-action: none; cursor: crosshair; }

.page-style-bar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; padding-bottom: 4px; }

.page-style-btn {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  cursor: pointer;
  background-color: var(--surface-solid);
  touch-action: manipulation;
  flex-shrink: 0;
  transition: border-color 0.15s, transform 0.1s;
}

.page-style-btn:hover { border-color: var(--navy); transform: translateY(-1px) rotate(-2deg); }
.page-style-btn.active { border-color: var(--green); border-width: 2px; }

.page-style-btn[data-style="lined"] {
  background-image: linear-gradient(var(--paper) 1px, transparent 1px);
  background-size: 100% 8px;
}
.page-style-btn[data-style="grid"] {
  background-image:
    linear-gradient(var(--paper) 1px, transparent 1px),
    linear-gradient(90deg, var(--paper) 1px, transparent 1px);
  background-size: 8px 8px;
}
.page-style-btn[data-style="dot"] {
  background-image: radial-gradient(var(--paper) 1px, transparent 1.2px);
  background-size: 8px 8px;
}

.page-style-icon { display: flex; align-items: center; justify-content: center; color: var(--text-soft); font-size: 0.9rem; }
.page-style-divider { width: 1px; height: 28px; background: var(--border-color-soft); margin: 0 2px; }

.color-swatch-label {
  width: 32px; height: 32px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  display: inline-block;
  cursor: pointer;
  flex-shrink: 0;
}

.color-swatch-label input[type="color"] { width: 100%; height: 100%; border: none; padding: 0; cursor: pointer; transform: scale(1.4); }
.page-bg-upload-btn { padding: 8px 14px; font-size: 0.85rem; }
.page-bg-size-select { padding: 8px 10px; font-size: 0.85rem; cursor: pointer; }

.ql-editor.paper-lined {
  background-image: linear-gradient(var(--page-line, #c7d2e0) 1px, transparent 1px);
  background-size: 100% 28px;
  background-attachment: local;
}
.ql-editor.paper-grid {
  background-image:
    linear-gradient(var(--page-line, #c7d2e0) 1px, transparent 1px),
    linear-gradient(90deg, var(--page-line, #c7d2e0) 1px, transparent 1px);
  background-size: 24px 24px;
  background-attachment: local;
}
.ql-editor.paper-dot {
  background-image: radial-gradient(var(--page-line, #c7d2e0) 1.5px, transparent 1.5px);
  background-size: 22px 22px;
  background-attachment: local;
}
.ql-editor.paper-kawaii,
.ql-editor.paper-custom { background-attachment: local; }

.category-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }

.category-chip {
  padding: 8px 14px;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.15s, transform 0.1s, border-color 0.15s;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
}

.category-chip:hover { opacity: 0.95; transform: translateY(-1px); }
.category-chip.selected { opacity: 1; border-color: var(--navy); border-width: 2px; transform: scale(1.04); }

.add-category-input { padding: 8px 14px; border-style: dashed; border-radius: 20px; font-size: 0.9rem; width: 160px; }

.note-header { margin-bottom: 4px; }
.note-title { font-weight: 700; }
.note-text { color: var(--text-soft); font-size: 0.95rem; }
.note-tag { padding: 4px 10px; border-radius: 12px; font-size: 0.8rem; font-weight: 700; }

.note-footer { display: flex; align-items: center; gap: 10px; margin-top: 12px; flex-wrap: wrap; }
.note-date { font-size: 0.8rem; color: var(--text-soft); margin-right: auto; }
.note-footer .delete-btn { padding: 8px 14px; min-height: 36px; font-size: 0.85rem; }

.note-drawing-preview {
  width: 100%;
  max-height: 140px;
  object-fit: contain;
  background: var(--paper);
  border-radius: 14px;
  margin: 8px 0;
}

.attachment-summary { display: flex; gap: 10px; font-size: 0.8rem; color: var(--text-soft); }

/* ---------- Quill toolbar: colorful bar, colored icons forced over quill.snow.css ---------- */
.ql-toolbar.ql-snow {
  border-radius: 16px 16px 0 0;
  border-color: var(--border-color);
  background-color: transparent !important;
  background-image: var(--grain),
    linear-gradient(120deg, var(--sky-soft) 0%, var(--green-soft) 55%, var(--cream-soft) 100%) !important;
}

@media (prefers-color-scheme: dark) {
  .ql-toolbar.ql-snow {
    background-image: var(--grain),
      linear-gradient(120deg, rgba(138,205,234,0.18) 0%, rgba(79,157,105,0.16) 55%, rgba(24,28,99,0.4) 100%) !important;
  }
}

.ql-container.ql-snow {
  border-radius: 0 0 16px 16px;
  border-color: var(--border-color);
  font-size: 1rem;
}

/* quill.snow.css loads after this file in index.html's <head>, so on a tie its
   own gray wins -- !important guarantees these colors show regardless of order */
.ql-toolbar.ql-snow .ql-stroke { stroke: var(--plum) !important; }
.ql-toolbar.ql-snow .ql-fill { fill: var(--plum) !important; }
.ql-toolbar.ql-snow .ql-picker { color: var(--plum) !important; }
.ql-toolbar.ql-snow .ql-picker-label .ql-stroke { stroke: var(--navy) !important; }

@media (prefers-color-scheme: dark) {
  .ql-toolbar.ql-snow .ql-stroke { stroke: var(--sky) !important; }
  .ql-toolbar.ql-snow .ql-fill { fill: var(--sky) !important; }
  .ql-toolbar.ql-snow .ql-picker { color: var(--sky) !important; }
  .ql-toolbar.ql-snow .ql-picker-label .ql-stroke { stroke: var(--green) !important; }
}

.ql-toolbar.ql-snow .ql-bold .ql-fill { fill: var(--green-deep) !important; }
.ql-toolbar.ql-snow .ql-italic .ql-stroke { stroke: var(--navy) !important; }
.ql-toolbar.ql-snow .ql-underline .ql-stroke { stroke: var(--sky-deep) !important; }
.ql-toolbar.ql-snow .ql-image .ql-stroke,
.ql-toolbar.ql-snow .ql-image .ql-fill { stroke: var(--plum) !important; fill: var(--plum) !important; }
.ql-toolbar.ql-snow .ql-header .ql-picker-label,
.ql-toolbar.ql-snow .ql-font .ql-picker-label,
.ql-toolbar.ql-snow .ql-size .ql-picker-label { color: var(--navy) !important; font-weight: 600; }

.ql-toolbar.ql-snow .ql-picker-options {
  background: var(--surface-solid) !important;
  border-color: var(--border-color) !important;
  border-radius: 10px;
  box-shadow: var(--shadow-md);
}
.ql-toolbar.ql-snow .ql-picker-item { color: var(--text) !important; }
.ql-toolbar.ql-snow .ql-picker-item:hover { color: var(--green-deep) !important; }

.ql-toolbar.ql-snow button:hover .ql-stroke { stroke: var(--green-deep) !important; }
.ql-toolbar.ql-snow button:hover .ql-fill { fill: var(--green-deep) !important; }
.ql-toolbar.ql-snow button {
  border-radius: 8px;
  transition: background-color 0.15s, transform 0.15s;
}
.ql-toolbar.ql-snow button:hover { background: rgba(255, 255, 255, 0.55); transform: translateY(-1px) scale(1.08); }

@media (prefers-color-scheme: dark) {
  .ql-toolbar.ql-snow button:hover { background: rgba(138, 205, 234, 0.16); }
}

.header-actions { display: flex; align-items: center; gap: 12px; }

.mode-toggle-btn {
  background: none;
  border: 1px solid transparent;
  font-size: 1.1rem;
  color: var(--navy);
  cursor: pointer;
  padding: 8px;
  border-radius: 10px;
  touch-action: manipulation;
  transition: background-color 0.15s, border-color 0.15s;
}

@media (prefers-color-scheme: dark) { .mode-toggle-btn { color: var(--sky); } }

.mode-toggle-btn:hover { background: var(--sky-soft); }
.mode-toggle-btn.active { background: var(--green-soft); border-color: var(--green-deep); color: var(--ink); }

.draw-tool {
  background: var(--surface-solid);
  border: 1px solid var(--border-color-soft);
  border-radius: 10px;
  width: 36px; height: 36px;
  cursor: pointer;
  color: var(--text-soft);
  touch-action: manipulation;
  transition: background-color 0.15s, border-color 0.15s;
}

.draw-tool:hover { border-color: var(--border-color); }
.draw-tool.active { background: linear-gradient(135deg, var(--navy), var(--green-deep)); color: white; border-color: var(--navy-deep); }

#penColor { width: 32px; height: 32px; border: none; padding: 0; cursor: pointer; }
#penSize { width: 90px; }

.attachment-section { border-top: 1px solid var(--border-color-soft); padding-top: 16px; }

.attach-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: linear-gradient(135deg, var(--cream), var(--sky));
  color: var(--ink);
  border: 1px solid var(--navy);
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  touch-action: manipulation;
  transition: filter 0.15s, transform 0.1s;
}

.attach-btn:hover { filter: brightness(1.04); transform: translateY(-1px); }

.attachment-list { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 12px; }

.attachment-item {
  position: relative;
  width: 140px;
  border: 1px solid var(--border-color-soft);
  border-radius: 14px;
  overflow: hidden;
  background: var(--surface-solid);
}

.attachment-item img.attachment-thumb { width: 100%; height: 140px; object-fit: cover; display: block; }

.attachment-item.file-chip {
  width: auto;
  min-width: 140px;
  padding: 10px 34px 10px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  height: 44px;
}

.attachment-item.file-chip i.file-icon { color: var(--green-deep); font-size: 1.1rem; }

.attachment-item.file-chip span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 140px;
  color: var(--text);
}

.attachment-item.file-chip a.download-link { color: var(--navy); margin-left: auto; }
.model-canvas-container { width: 140px; height: 140px; background: var(--paper); }

.remove-attachment {
  position: absolute;
  top: 4px; right: 4px;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.6);
  color: white;
  border: none;
  font-size: 0.8rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  touch-action: manipulation;
  z-index: 2;
}

#noteEditorPage { overflow-y: auto; }
#toolbar { position: sticky; top: 0; z-index: 5; }

#pageCanvasWrapper { position: relative; }
#editorContainer.ql-container { height: auto; border: none; }
#editorContainer .ql-editor {
  height: auto;
  overflow: visible;
  min-height: calc(100vh - 260px);
  padding: 24px 32px;
}