:root {
  --bg: #f7f7f8;
  --surface: #ffffff;
  --surface-2: #f1f1f3;
  --border: #e4e4e9;
  --text: #18181b;
  --muted: #6b7280;
  --muted-2: #9ca3af;
  --accent: #7c3aed;
  --accent-hover: #6d28d9;
  --accent-soft: #ede9fe;
  --accent-dim: #c4b5fd;
  --accent-text: #ffffff;
  --at-hand-bg: #fbfaff;
  --danger: #dc2626;
  --warning: #d97706;
  --radius: 10px;
  --radius-sm: 6px;
  --transition: 120ms ease;
  --tap: 44px;
}

[data-theme='dark'] {
  --bg: #1b1a27;
  --surface: #252333;
  --surface-2: #2e2c42;
  --border: #3d3b55;
  --text: #e8e5f5;
  --muted: #8b88a8;
  --muted-2: #6a6785;
  --accent: #ffaff3;
  --accent-hover: #ff90e8;
  --accent-soft: #2d1c33;
  --accent-dim: #7a3572;
  --accent-text: #1a0e20;
  --at-hand-bg: #26192e;
  --danger: #ff6b6b;
  --warning: #fbbf24;
  color-scheme: dark;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family:
    -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue',
    Arial, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

[x-cloak] {
  display: none !important;
}

/* ----- mobile-first base ----- */
.app {
  padding: 0 12px env(safe-area-inset-bottom) 12px;
}

/* Sticky control header */
.sticky {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--bg);
  margin: 0 -12px;
  padding: 10px 12px 8px;
  border-bottom: 1px solid var(--border);
}

h1 {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.theme-toggle {
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  padding: 0;
  min-height: auto;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition:
    color var(--transition),
    background var(--transition),
    border-color var(--transition);
}

.theme-toggle:hover {
  color: var(--text);
  background: var(--surface-2);
  border-color: var(--border);
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.spinner {
  width: 30px;
  height: 30px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.65s linear infinite;
}

.loading-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.loading-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50%;
  padding: 16px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.14);
  display: flex;
}

.spell-card {
  --animate-duration: 0.35s;
}

.toast {
  --animate-duration: 0.4s;
}

.slot-col {
  --animate-duration: 0.5s;
}

.control-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: stretch;
  margin-bottom: 8px;
}

.level-select {
  display: block;
  width: 80px;
}

.level-input {
  display: none;
}

.control-row select,
.control-row input[type='number'],
.control-row button {
  height: var(--tap);
}

.control-row .full {
  grid-column: 1 / -1;
}

.rest-row {
  display: flex;
  gap: 8px;
  margin-bottom: 4px;
}

.rest-row button {
  flex: 1;
  height: 40px;
}

.rest-tablet {
  display: none;
}

label {
  display: block;
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

select,
input[type='number'],
input[type='text'],
input[type='search'] {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0 12px;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-family: inherit;
  width: 100%;
  transition: border-color var(--transition);
  -webkit-appearance: none;
  appearance: none;
}

select {
  background-image:
    linear-gradient(45deg, transparent 50%, var(--muted) 50%),
    linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position:
    calc(100% - 16px) 50%,
    calc(100% - 11px) 50%;
  background-size:
    5px 5px,
    5px 5px;
  background-repeat: no-repeat;
  padding-right: 32px;
}

input[type='number'] {
  text-align: center;
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

button {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  touch-action: manipulation;
  transition:
    background var(--transition),
    border-color var(--transition),
    color var(--transition);
  min-height: 40px;
  white-space: nowrap;
}

button:active:not(:disabled) {
  background: var(--surface-2);
}

button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

button.primary {
  background: var(--accent);
  color: var(--accent-text);
  border-color: var(--accent);
  font-weight: 500;
}

button.primary:active:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

button.ghost {
  background: transparent;
  border-color: transparent;
  color: var(--muted);
  padding: 0 10px;
  min-height: 36px;
  font-size: 13px;
}

button.ghost:active:not(:disabled) {
  background: var(--surface-2);
}

/* ----- slot grid ----- */
.slots {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  gap: 6px;
}

.slot-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 8px 4px;
  background: var(--accent-soft);
  border: 1px solid var(--accent-dim);
  border-radius: var(--radius-sm);
  min-height: var(--tap);
  transition: border-color var(--transition);
}

.slot-col.spent {
  background: var(--surface);
  border-color: var(--border);
}

.slot-col.has-slots:active {
  border-color: var(--accent);
}

.slot-col.has-slots {
  cursor: pointer;
}

.slot-label {
  font-size: 11px;
  color: var(--muted);
  font-weight: 600;
  letter-spacing: 0.05em;
}

.slot-pips {
  display: flex;
  gap: 3px;
  flex-wrap: wrap;
  justify-content: center;
  min-height: 8px;
}

.pip {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-sizing: border-box;
}

.pip.spent {
  background: transparent;
  border: 1.5px solid var(--muted-2);
}

.slot-count {
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  color: var(--muted);
}

.slot-count strong {
  color: var(--text);
  font-weight: 600;
}

.no-level {
  padding: 14px;
  text-align: center;
  color: var(--muted);
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
}

/* ----- tabs + filters ----- */
.tabs {
  display: flex;
  gap: 4px;
  margin: 16px 0 12px;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  scrollbar-width: none;
}

.tabs::-webkit-scrollbar {
  display: none;
}

.tab {
  background: transparent;
  border: none;
  color: var(--muted);
  padding: 12px 14px;
  border-radius: 0;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  font-weight: 500;
  min-height: 44px;
}

.tab.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

.tab .count {
  color: var(--muted);
  margin-left: 4px;
  font-weight: 400;
}

.tabs-actions {
  margin-left: auto;
  align-self: center;
}

.filters {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  margin-bottom: 12px;
}

.filters input {
  height: var(--tap);
}

.filters select {
  height: var(--tap);
  width: auto;
  min-width: 110px;
}

/* ----- spell list ----- */
.spell-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.spell-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  transition:
    border-color var(--transition),
    background var(--transition);
}

.spell-card.at-hand {
  border-color: var(--accent-dim);
  background: var(--at-hand-bg);
}

.spell-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.spell-head-text {
  min-width: 0;
  flex: 1;
}

.spell-name {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.3;
  margin: 0 0 4px;
  word-wrap: break-word;
}

.spell-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 2px;
}

.badge {
  display: inline-block;
  background: var(--surface-2);
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.badge.level {
  color: var(--accent);
  border-color: var(--accent-dim);
  background: var(--accent-soft);
}

.spell-classes {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  flex-basis: 100%;
}

.badge.class-badge {
  color: var(--muted);
  border-color: var(--border);
  background: var(--surface);
  font-style: italic;
}

.chev {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--muted-2);
  transition:
    transform var(--transition),
    color var(--transition);
}

.chev::before {
  content: '';
  width: 8px;
  height: 8px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  margin-top: -3px;
}

.spell-card.open .chev {
  transform: rotate(180deg);
  color: var(--accent);
}

.meta-rows {
  margin-top: 10px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 12px;
}

.meta {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
  font-size: 13px;
}

.meta-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted-2);
}

.meta-value {
  color: var(--text);
  overflow-wrap: anywhere;
}

.meta.wide {
  grid-column: 1 / -1;
}

.description {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  white-space: pre-wrap;
  color: var(--text);
  font-size: 14.5px;
  line-height: 1.6;
  word-wrap: break-word;
}

.spell-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

.spell-actions button {
  flex: 1;
  min-height: var(--tap);
}

.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--muted);
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  font-size: 14px;
}

.empty-state strong {
  color: var(--text);
  display: block;
  margin-bottom: 6px;
  font-size: 15px;
}

/* Bookmark button */
.bookmark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
  padding: 0 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition:
    color var(--transition),
    background var(--transition),
    border-color var(--transition);
}

.bookmark:active {
  background: var(--surface-2);
}

.bookmark.on {
  color: var(--accent);
  border-color: var(--accent-dim);
  background: var(--accent-soft);
}

.bookmark-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1.5px solid currentColor;
  background: transparent;
  box-sizing: border-box;
  transition: background var(--transition);
}

.bookmark.on .bookmark-dot {
  background: var(--accent);
  border-color: var(--accent);
}

.footer {
  margin-top: 32px;
  padding: 16px 0 24px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 12px;
  color: var(--muted);
}

.footer a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.footer a:hover {
  text-decoration: underline;
}

.toast.toast-success {
  border-color: var(--accent);
}

.toast.toast-warning {
  border-color: var(--warning);
}

.toast {
  position: fixed;
  bottom: 20px;
  left: 12px;
  right: 12px;
  max-width: 480px;
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--danger);
  color: var(--text);
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  z-index: 50;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

/* ----- tablet (≥640px) ----- */
@media (min-width: 640px) {
  .app {
    padding: 0 20px 80px;
  }

  .sticky {
    margin: 0 -20px;
    padding: 14px 20px 12px;
  }

  h1 {
    font-size: 22px;
    margin-bottom: 14px;
  }

  .meta-rows {
    grid-template-columns: repeat(4, 1fr);
  }

  .meta.wide {
    grid-column: auto;
  }

  .control-row {
    grid-template-columns: 240px 100px 1fr;
    align-items: end;
  }

  .level-select {
    display: none;
  }

  .level-input {
    display: block;
  }

  .control-row .rest-tablet {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
  }

  .rest-row {
    display: none;
  }

  .spell-card {
    padding: 16px 18px;
  }

  button:hover:not(:disabled) {
    border-color: var(--accent-dim);
    background: var(--accent-soft);
  }

  button.primary:hover:not(:disabled) {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
  }

  .bookmark:hover {
    color: var(--text);
    background: var(--surface-2);
  }

  .bookmark.on:hover {
    color: var(--accent);
    background: var(--accent-soft);
  }
}

/* ----- desktop (≥1024px) ----- */
@media (min-width: 1024px) {
  .app {
    max-width: 1024px;
    margin: 0 auto;
    padding: 0 32px 96px;
  }

  .sticky {
    margin: 0 -32px;
    padding: 18px 32px 14px;
  }

  .spell-actions {
    justify-content: flex-end;
  }

  .spell-actions button {
    flex: 0 0 auto;
    min-width: 110px;
  }
}