:root,
[data-theme="dark"] {
  --bg-app: #000000;
  --bg-sidebar: #070709;
  --bg-card: #0d0d10;
  --bg-input: #131317;
  --bg-hover: #1c1c22;
  --bg-active: #24242c;

  --border-dim: #1f1f26;
  --border-mid: #33333e;
  --border-bright: #ffffff;

  --text-pure: #ffffff;
  --text-high: #f4f4f5;
  --text-mid: #a1a1aa;
  --text-muted: #52525b;

  --font-sans: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, sans-serif;
  --font-ethiopic: "Nyala", "Abyssinica SIL", "Noto Sans Ethiopic", "Kefa", sans-serif;
}

[data-theme="light"] {
  --bg-app: #ffffff;
  --bg-sidebar: #f8fafc;
  --bg-card: #ffffff;
  --bg-input: #f1f5f9;
  --bg-hover: #e2e8f0;
  --bg-active: #cbd5e1;

  --border-dim: #e2e8f0;
  --border-mid: #cbd5e1;
  --border-bright: #0f172a;

  --text-pure: #09090b;
  --text-high: #18181b;
  --text-mid: #475569;
  --text-muted: #94a3b8;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border-mid) transparent;
}

/* Custom Sleek Scrollbar (Zero Arrows) */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background-color: var(--border-mid);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background-color: var(--text-muted);
}

::-webkit-scrollbar-button {
  display: none !important;
  width: 0 !important;
  height: 0 !important;
}

::-webkit-scrollbar-corner {
  background: transparent;
}

html, body {
  overflow-x: hidden;
  max-width: 100vw;
}

body {
  background-color: var(--bg-app);
  background-image: 
    radial-gradient(circle at 100% 0%, rgba(255, 255, 255, 0.04) 0%, transparent 60%),
    radial-gradient(circle at 0% 100%, rgba(255, 255, 255, 0.02) 0%, transparent 50%);
  color: var(--text-pure);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  position: relative;
  transition: background-color 0.2s ease, color 0.2s ease;
}

[data-theme="light"] body {
  background-image: 
    radial-gradient(circle at 100% 0%, rgba(0, 0, 0, 0.03) 0%, transparent 60%),
    radial-gradient(circle at 0% 100%, rgba(0, 0, 0, 0.02) 0%, transparent 50%);
}

/* Wavy Calligraphic Watermark Pattern */
body::after {
  content: "ፊደል";
  position: fixed;
  right: 40px;
  bottom: 20px;
  font-family: var(--font-ethiopic);
  font-size: 260px;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.015);
  pointer-events: none;
  z-index: 0;
  letter-spacing: -0.05em;
  line-height: 1;
}

[data-theme="light"] body::after {
  color: rgba(0, 0, 0, 0.02);
}

.app-layout {
  display: flex;
  min-height: 100vh;
  position: relative;
  z-index: 1;
  width: 100%;
}

/* Sidebar */
.sidebar {
  width: 270px;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-dim);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.sidebar-brand {
  padding: 24px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border-dim);
}

.brand-logo-svg {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.brand-titles {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 16px;
  font-weight: 800;
  color: var(--text-pure);
  letter-spacing: -0.02em;
}

.brand-tag {
  font-size: 11px;
  color: var(--text-muted);
}

.sidebar-nav {
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.nav-tab {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 4px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-mid);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  transition: all 0.15s ease;
  width: 100%;
}

.nav-tab:hover {
  background-color: var(--bg-hover);
  color: var(--text-pure);
}

.nav-tab.active {
  background-color: var(--bg-active);
  color: var(--text-pure);
  border-color: var(--border-mid);
  border-left: 3px solid var(--text-pure);
}

.nav-icon {
  width: 15px;
  height: 15px;
  stroke-width: 2;
  flex-shrink: 0;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border-dim);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.btn-sidebar-theme {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-mid);
  font-size: 12.5px;
  font-weight: 500;
  background: var(--bg-input);
  border: 1px solid var(--border-dim);
  padding: 7px 10px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-sidebar-theme:hover {
  background: var(--bg-hover);
  color: var(--text-pure);
}

[data-theme="dark"] .icon-sun { display: block; }
[data-theme="dark"] .icon-moon { display: none; }
[data-theme="light"] .icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: block; }

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 12px;
  text-decoration: none;
  transition: color 0.15s;
}

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

.nav-icon-sm {
  width: 14px;
  height: 14px;
  stroke-width: 2;
}

/* Main Body with Overflow Protection */
.main-body {
  flex: 1;
  max-width: calc(100vw - 270px);
  width: 100%;
  padding: 36px 40px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  overflow-x: hidden;
}

.tab-pane {
  display: none;
  flex-direction: column;
  gap: 20px;
  width: 100%;
}

.tab-pane.active {
  display: flex;
}

.pane-header h2 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-pure);
  margin-bottom: 4px;
}

.pane-lead {
  font-size: 13.5px;
  color: var(--text-mid);
}

/* Edge-Cut Cards */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-dim);
  border-radius: 4px;
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.card-accent {
  background: var(--bg-card);
  border-color: var(--border-mid);
}

.card-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-tag {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--text-pure);
  background: var(--bg-input);
  padding: 2px 8px;
  border-radius: 3px;
  border: 1px solid var(--border-mid);
}

.card-hint {
  font-size: 11px;
  color: var(--text-muted);
}

.card h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-pure);
}

.card-desc {
  font-size: 13px;
  color: var(--text-mid);
}

/* Sandbox */
.sandbox-output-row {
  display: flex;
  align-items: center;
  gap: 14px;
  background-color: var(--bg-input);
  border: 1px solid var(--border-dim);
  border-radius: 4px;
  padding: 12px 14px;
}

.sandbox-label {
  font-size: 12px;
  color: var(--text-muted);
}

.sandbox-rendered {
  font-family: var(--font-ethiopic);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-pure);
}

.sandbox-decomp {
  margin-left: auto;
  font-size: 12px;
  color: var(--text-mid);
}

.sandbox-decomp code {
  background: var(--bg-card);
  padding: 2px 6px;
  border-radius: 3px;
  border: 1px solid var(--border-dim);
}

/* Radio Cards */
.radio-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.radio-card {
  border: 1px solid var(--border-dim);
  background-color: var(--bg-input);
  border-radius: 4px;
  padding: 14px 16px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  transition: all 0.15s;
}

.radio-card:hover {
  border-color: var(--border-mid);
}

.radio-card input {
  margin-top: 3px;
  accent-color: var(--text-pure);
}

.radio-card:has(input:checked) {
  border-color: var(--text-pure);
  background-color: var(--bg-hover);
}

.radio-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-pure);
  margin-bottom: 2px;
}

.radio-detail {
  font-size: 12px;
  color: var(--text-muted);
}

.radio-detail code {
  color: var(--text-mid);
}

/* Form Inputs */
.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field-group label {
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-mid);
}

.field-tip {
  font-size: 11.5px;
  color: var(--text-muted);
}

.modern-input {
  background-color: var(--bg-input);
  border: 1px solid var(--border-dim);
  border-radius: 4px;
  color: var(--text-pure);
  padding: 9px 12px;
  font-size: 13.5px;
  outline: none;
  font-family: inherit;
  width: 100%;
  transition: border-color 0.15s;
}

.modern-input-sm {
  background-color: var(--bg-input);
  border: 1px solid var(--border-dim);
  border-radius: 4px;
  color: var(--text-pure);
  padding: 7px 10px;
  font-size: 13px;
  width: 80px;
  outline: none;
}

.modern-input:focus,
.modern-input-sm:focus,
.modern-textarea:focus {
  border-color: var(--text-pure);
}

.modern-textarea {
  background-color: var(--bg-input);
  border: 1px solid var(--border-dim);
  border-radius: 4px;
  color: var(--text-pure);
  padding: 10px 12px;
  font-size: 13px;
  outline: none;
  font-family: monospace;
  width: 100%;
  resize: vertical;
}

.font-ethiopic {
  font-family: var(--font-ethiopic);
  font-size: 15px;
}

/* Buttons */
.btn-primary {
  background-color: var(--text-pure);
  color: var(--bg-app);
  border: none;
  border-radius: 4px;
  padding: 9px 16px;
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: opacity 0.15s;
}

.btn-primary:hover {
  opacity: 0.9;
}

.btn-ghost {
  background: var(--bg-input);
  color: var(--text-mid);
  border: 1px solid var(--border-dim);
  border-radius: 4px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-ghost:hover {
  background: var(--bg-hover);
  color: var(--text-pure);
  border-color: var(--border-mid);
}

.btn-icon {
  width: 14px;
  height: 14px;
  stroke-width: 2;
}

/* Dictionary Grid & Table */
.dict-add-grid {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 12px;
  align-items: flex-end;
}

.dict-btn-wrapper {
  padding-bottom: 1px;
}

.table-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.table-actions {
  display: flex;
  gap: 8px;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: var(--bg-input);
  border: 1px solid var(--border-dim);
  border-radius: 4px;
  padding: 7px 12px;
  flex: 1;
  max-width: 380px;
}

.search-icon {
  width: 14px;
  height: 14px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.search-box input {
  background: transparent;
  border: none;
  color: var(--text-pure);
  font-size: 13px;
  outline: none;
  width: 100%;
}

.table-shell {
  border: 1px solid var(--border-dim);
  border-radius: 4px;
  overflow: hidden;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.data-table th {
  background-color: var(--bg-input);
  padding: 9px 12px;
  font-weight: 600;
  color: var(--text-muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border-dim);
}

.data-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-dim);
}

.data-table tr:last-child td {
  border-bottom: none;
}

.th-actions {
  text-align: right;
  width: 80px;
}

.td-actions {
  text-align: right;
}

.table-empty {
  text-align: center;
  color: var(--text-muted);
  padding: 24px !important;
}

.btn-del {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 3px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
}

.btn-del:hover {
  background: var(--text-pure);
  color: var(--bg-app);
}

/* Contained Syllabary Reference Table (Edge-to-Edge Width) */
.syllabary-filter-bar {
  display: flex;
  align-items: center;
  margin-bottom: 4px;
}

.syllabary-grid-container {
  border: 1px solid var(--border-dim);
  border-radius: 4px;
  overflow-x: auto;
  overflow-y: auto;
  max-height: 540px;
  width: 100%;
}

.syllabary-table {
  width: 100%;
  border-collapse: collapse;
  text-align: center;
  font-size: 13px;
  table-layout: auto;
}

.syllabary-table th {
  background-color: var(--bg-input);
  padding: 9px 8px;
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-dim);
  border-right: 1px solid var(--border-dim);
  position: sticky;
  top: 0;
  z-index: 2;
  white-space: nowrap;
}

.syllabary-table th:last-child {
  border-right: none;
}

.syllabary-table td {
  padding: 6px 6px;
  border-bottom: 1px solid var(--border-dim);
  border-right: 1px solid var(--border-dim);
  font-family: var(--font-ethiopic);
  font-size: 14.5px;
  white-space: nowrap;
}

.syllabary-table td:last-child {
  border-right: none;
}

.family-name-cell {
  font-family: var(--font-sans) !important;
  font-weight: 700;
  color: var(--text-pure);
  background-color: var(--bg-input);
  font-size: 12.5px !important;
  text-align: left;
  position: sticky;
  left: 0;
  z-index: 1;
  padding-left: 10px !important;
}

.family-trigger-cell {
  font-family: monospace !important;
  font-size: 11px !important;
  color: var(--text-mid);
  text-align: left;
  padding-left: 8px !important;
}

.syllabary-cell {
  background: transparent;
  border: none;
  cursor: pointer;
  border-radius: 3px;
  padding: 3px 5px;
  transition: all 0.15s;
  display: inline-flex;
  align-items: baseline;
  gap: 3px;
  color: inherit;
  font-family: inherit;
  font-size: inherit;
  position: relative;
}

.cell-glyph {
  font-family: var(--font-ethiopic);
  font-size: 15px;
  font-weight: 700;
  color: var(--text-pure);
}

.cell-ph {
  font-family: var(--font-sans);
  font-size: 10px;
  color: var(--text-muted);
}

.cell-toast {
  position: absolute;
  top: -22px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--text-pure);
  color: var(--bg-app);
  font-family: var(--font-sans);
  font-size: 9.5px;
  font-weight: 700;
  padding: 2px 5px;
  border-radius: 3px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
  box-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

.syllabary-cell.copied {
  background-color: var(--text-pure);
}

.syllabary-cell.copied .cell-glyph,
.syllabary-cell.copied .cell-ph {
  color: var(--bg-app);
}

.syllabary-cell.copied .cell-toast {
  opacity: 1;
}

.syllabary-cell:hover:not(.copied) {
  background-color: var(--bg-hover);
  transform: scale(1.06);
}

/* Switch List */
.switch-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.switch-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 14px;
  background-color: var(--bg-input);
  border: 1px solid var(--border-dim);
  border-radius: 4px;
  cursor: pointer;
  transition: border-color 0.15s;
}

.switch-row:hover {
  border-color: var(--border-mid);
}

.switch-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.switch-title {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-pure);
}

.switch-desc {
  font-size: 12px;
  color: var(--text-muted);
}

.custom-toggle {
  width: 16px;
  height: 16px;
  accent-color: var(--text-pure);
  cursor: pointer;
}

/* Save Footer */
.save-footer {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 10px;
}

.btn-save {
  background-color: var(--text-pure);
  color: var(--bg-app);
  border: none;
  border-radius: 4px;
  padding: 10px 20px;
  font-size: 13.5px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: opacity 0.15s;
}

.btn-save:hover {
  opacity: 0.9;
}

.save-toast {
  font-size: 13px;
  color: var(--text-pure);
  font-weight: 500;
}

/* Compatibility Grid */
.compat-options-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.compat-card-opt {
  background-color: var(--bg-input);
  border: 1px solid var(--border-dim);
  border-radius: 4px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.compat-tag {
  display: inline-block;
  font-size: 10.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 2px 7px;
  border-radius: 3px;
  width: fit-content;
}

.compat-tag.active-tag {
  background-color: var(--text-pure);
  color: var(--bg-app);
}

.compat-tag.note-tag {
  background-color: var(--bg-card);
  color: var(--text-mid);
  border: 1px solid var(--border-mid);
}

.compat-card-opt h4 {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-pure);
}

.compat-card-opt p {
  font-size: 12px;
  color: var(--text-mid);
  line-height: 1.5;
}

@media (max-width: 768px) {
  .compat-options-grid {
    grid-template-columns: 1fr;
  }
}