/* =================================================================
   FreeSum — Settings page (/settings) styles v2
   Depends on tokens.css + base.css
   ================================================================= */

/* ---- Settings layout ---- */
.settings-layout {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 24px;
  align-items: flex-start;
}
@media (max-width: 960px) {
  .settings-layout { grid-template-columns: 1fr; }
}

/* ---- Left nav ---- */
.settings-nav {
  position: sticky;
  top: 24px;
  display: flex; flex-direction: column; gap: 16px;
}
.settings-nav nav ol {
  list-style: none; margin: 0; padding: 0;
  background: var(--bg-2);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.settings-nav nav li {}
.settings-nav nav a {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px;
  color: var(--text-2);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  border-left: 3px solid transparent;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast);
}
.settings-nav nav a:hover { background: var(--bg-3); color: var(--text-1); }
.settings-nav nav a.active {
  background: var(--accent-soft);
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 600;
}
.settings-nav nav .nav-ic { font-size: 16px; }

.save-nav {
  background: var(--bg-2);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-lg);
  padding: 14px;
  display: flex; flex-direction: column; gap: 8px;
  box-shadow: var(--shadow-sm);
}
.save-nav .dirty { color: var(--warn); font-size: 12px; }
.save-nav .saved { color: var(--success); font-size: 12px; font-weight: 600; }
.save-nav button { width: 100%; }

/* ---- Content ---- */
.settings-content {
  display: flex; flex-direction: column; gap: 18px;
  min-width: 0;
}
.section { scroll-margin-top: 24px; }

/* ---- Mode picker (grid) ---- */
.mode-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 0;
}
.mode-pick {
  background: var(--bg-3);
  border: 1px solid var(--border-1);
  border-radius: var(--radius);
  padding: 14px 10px;
  text-align: center;
  cursor: pointer;
  transition: all var(--t-fast);
  font: inherit;
  color: var(--text-1);
}
.mode-pick:hover { border-color: var(--border-2); transform: translateY(-1px); }
.mode-pick.active {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.mode-pick .ic { font-size: 24px; }
.mode-pick .lab { font-weight: 600; margin-top: 8px; color: var(--text-1); font-size: 14px; }
.mode-pick .desc { font-size: 11px; color: var(--text-3); margin-top: 4px; }
.mode-pick.active .lab { color: var(--accent); }
@media (max-width: 720px) {
  .mode-grid { grid-template-columns: 1fr; }
}

/* ---- Preset cards ---- */
.preset-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.preset-card {
  background: var(--bg-3);
  border: 1px solid var(--border-1);
  border-radius: var(--radius);
  padding: 14px;
  display: flex; align-items: center; gap: 12px;
  cursor: pointer;
  transition: all var(--t-fast);
  font: inherit;
  color: var(--text-1);
  text-align: left;
}
.preset-card:hover { border-color: var(--border-2); transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.preset-card.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: var(--shadow-sm);
}
.preset-ic {
  width: 40px; height: 40px;
  background: var(--bg-2);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  border: 1px solid var(--border-1);
  flex-shrink: 0;
}
.preset-card.active .preset-ic { background: var(--bg-1); border-color: var(--accent); }
.preset-body { min-width: 0; }
.preset-title { font-weight: 600; font-size: 13px; color: var(--text-1); }
.preset-card.active .preset-title { color: var(--accent); }
.preset-meta { font-size: 11px; color: var(--text-3); font-family: var(--font-mono); margin-top: 2px; }

@media (max-width: 720px) {
  .preset-row { grid-template-columns: 1fr 1fr; }
}

/* ---- Form fields ---- */
.field { flex: 1 1 180px; min-width: 140px; }
.field.small { flex: 0 0 110px; }
.field.full  { flex: 1 1 100%; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-end; }
.row + .row { margin-top: 12px; }
.help { font-size: 11px; color: var(--text-3); margin-top: 6px; line-height: 1.45; }

/* ---- Switch (reused from index.css conceptually; define here too) ---- */
.switch {
  display: inline-flex; align-items: center; gap: 10px;
  cursor: pointer;
  color: var(--text-2);
  font-size: 13px;
}
.switch input { position: absolute; opacity: 0; pointer-events: none; }
.switch-slider {
  position: relative;
  width: 36px; height: 20px;
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: 999px;
  transition: background var(--t-fast), border-color var(--t-fast);
  flex-shrink: 0;
}
.switch-slider::after {
  content: "";
  position: absolute; left: 2px; top: 2px;
  width: 14px; height: 14px;
  background: var(--text-3);
  border-radius: 50%;
  transition: transform var(--t-fast), background var(--t-fast);
}
.switch input:checked + .switch-slider { background: var(--accent); border-color: var(--accent); }
.switch input:checked + .switch-slider::after { transform: translateX(16px); background: white; }
.switch input:focus-visible + .switch-slider { box-shadow: var(--shadow-focus); }
.switch-label { color: var(--text-2); font-size: 13px; }

/* ---- Color input ---- */
.color-input {
  display: flex; align-items: center; gap: 6px;
}
.color-input input[type=text] {
  flex: 1; font-family: var(--font-mono); text-transform: uppercase;
  width: auto;
}

/* ---- Position slider ---- */
.pos-row { display: flex; align-items: center; gap: 10px; }
.pos-row input[type=range] { flex: 1; }
.pos-row input[type=number] { width: 64px; }

/* ---- Template picker ---- */
.tpl-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 8px;
}
.tpl-pick {
  background: var(--bg-3);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-sm);
  padding: 10px;
  cursor: pointer;
  text-align: center;
  transition: all var(--t-fast);
  font: inherit;
  color: var(--text-1);
}
.tpl-pick:hover { border-color: var(--border-2); transform: translateY(-1px); }
.tpl-pick.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: var(--shadow-sm);
}
.tpl-pick .sample { font-size: 14px; font-weight: 700; margin-bottom: 4px; color: var(--text-1); }
.tpl-pick.active .sample { color: var(--accent); }
.tpl-pick .name { font-size: 11px; color: var(--text-3); }

/* ---- Warmup log ---- */
.warmup-log {
  background: #0a0c10;
  border: 1px solid var(--border-1);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  color: #c5d1e1;
  font-family: var(--font-mono);
  font-size: 12px; line-height: 1.5;
  max-height: 200px; overflow-y: auto;
  white-space: pre-wrap; word-break: break-all;
  margin-top: 10px;
}
html[data-theme="light"] .warmup-log { background: #1f2530; }

/* ---- Shortcuts grid ---- */
.shortcuts-grid {
  display: flex; flex-direction: column; gap: 16px;
}
.sc-group h3 {
  margin: 0 0 8px;
  font-size: 12px;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: .06em;
  font-weight: 600;
}
.sc-row {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 0;
  font-size: 13px;
  color: var(--text-2);
}
.sc-row span { color: var(--text-2); }

/* ---- Log details (shared with index) ---- */
.log-details {
  margin-top: 12px;
  border-top: 1px solid var(--border-1);
  padding-top: 10px;
}
.log-details summary {
  cursor: pointer;
  font-size: 12px;
  color: var(--text-3);
  padding: 4px 0;
  user-select: none;
  display: flex; align-items: center; gap: 6px;
}
.log-details summary::before { content: "▸"; display: inline-block; transition: transform var(--t-fast); }
.log-details[open] summary::before { transform: rotate(90deg); }
.log-details summary:hover { color: var(--text-1); }

/* ---- Check rows (legacy support) ---- */
.check-row {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 6px;
}
.check-row label { margin: 0; cursor: pointer; color: var(--text-1); font-size: 13px; }

/* ---- Responsive ---- */
@media (max-width: 720px) {
  .settings-nav { position: static; }
  .row { flex-direction: column; }
  .field { width: 100%; }
  h1 { font-size: 17px; }
  .brand .logo { width: 30px; height: 30px; font-size: 17px; }
  .nav-text { display: none; }
}