:root {
  --bg: #0f1115;
  --bg-muted: #151c2b;
  --bg-card: #1a2336;
  --bg-elevated: #1f2940;
  --border: #27324b;
  --text: #f2f5ff;
  --text-dim: #9eaac8;
  --overlay: rgba(11, 15, 24, 0.72);
  --shadow-elevated: 0 18px 45px rgba(5, 8, 20, 0.35);
  --accent: #3b82f6;
  --accent-strong: #2151c5;
  --accent-soft: rgba(59, 130, 246, 0.12);
  --accent-contrast: #ffffff;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;

  /* legacy aliases for backwards compatibility */
  --color-bg: var(--bg);
  --color-bg-muted: var(--bg-muted);
  --color-surface: var(--bg-card);
  --color-surface-elevated: var(--bg-elevated);
  --color-border: var(--border);
  --color-text: var(--text);
  --color-text-muted: var(--text-dim);
  --color-overlay: var(--overlay);
  --color-accent: var(--accent);
  --color-accent-strong: var(--accent-strong);
  --color-accent-soft: var(--accent-soft);
  --color-accent-contrast: var(--accent-contrast);
  --color-success: var(--success);
  --color-warning: var(--warning);
  --color-danger: var(--danger);
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --radius-xl: 22px;
  --shadow-soft: 0 12px 30px color-mix(in srgb, var(--bg) 72%, transparent);
  --shadow-card: var(--shadow-elevated);
  --divider: color-mix(in srgb, var(--border) 68%, transparent);
  --bg-soft: color-mix(in srgb, var(--bg-card) 88%, transparent);
  --bg-faint: color-mix(in srgb, var(--bg-elevated) 82%, transparent);
  --bg-strong: color-mix(in srgb, var(--bg-card) 65%, var(--bg));
  --bg-contrast: color-mix(in srgb, var(--bg-card) 92%, transparent);
  --ring: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent);
  --focus-outline: 2px solid color-mix(in srgb, var(--accent) 65%, transparent);
}

html,
body {
  height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  line-height: 1.5;
}

body {
  display: flex;
  flex-direction: column;
}

main {
  flex: 1 0 auto;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  color: color-mix(in srgb, var(--accent) 80%, var(--accent-strong));
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--accent) 65%, transparent);
  outline-offset: 2px;
}

.page-wrap {
  display: grid;
  gap: 1.2rem;
}

.stack {
  display: grid;
  gap: var(--stack-gap, 1rem);
}

.stack.gap-sm {
  --stack-gap: 0.7rem;
}

.stack.gap-lg {
  --stack-gap: 1.4rem;
}

.row,
.flex {
  display: flex;
  gap: var(--flex-gap, 0.75rem);
}

.row.gap-sm,
.flex.gap-sm {
  --flex-gap: 0.5rem;
}

.row.gap-lg,
.flex.gap-lg {
  --flex-gap: 1.1rem;
}

.row.align-center,
.flex.align-center {
  align-items: center;
}

.row.align-start,
.flex.align-start {
  align-items: flex-start;
}

.row.align-end,
.flex.align-end {
  align-items: flex-end;
}

.row.justify-between,
.flex.justify-between {
  justify-content: space-between;
}

.row.justify-end,
.flex.justify-end {
  justify-content: flex-end;
}

.row.wrap,
.flex.wrap {
  flex-wrap: wrap;
}

.grid {
  display: grid;
  gap: var(--grid-gap, 1rem);
}

.grid.gap-sm {
  --grid-gap: 0.7rem;
}

.grid.gap-lg {
  --grid-gap: 1.4rem;
}

.grid.cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid.cols-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

@media (max-width: 900px) {
  .grid.cols-2,
  .grid.cols-3 {
    grid-template-columns: 1fr;
  }
}

.muted {
  color: var(--text-dim);
}

.tight {
  margin: 0;
}

.title {
  font-weight: 700;
  color: var(--text);
  margin: 0;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 1.2rem 1.3rem;
}

.card-muted {
  background: var(--bg-soft);
}

.card-compact {
  padding: 1rem 1.1rem;
  border-radius: var(--radius-md);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  cursor: pointer;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  font-weight: 600;
  padding: 0.55rem 0.95rem;
  font-size: 0.95rem;
  transition:
    filter 0.2s ease,
    transform 0.1s ease,
    background 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease;
}

.btn:hover {
  filter: brightness(1.05);
}

.btn:active {
  transform: translateY(1px);
}

.btn.full,
.btn.btn-full {
  width: 100%;
}

.btn-primary,
.btn.primary {
  background: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 90%, transparent);
  color: var(--accent-contrast);
}

.btn-ghost,
.btn.ghost {
  background: color-mix(in srgb, var(--bg-elevated) 65%, transparent);
  border-color: color-mix(in srgb, var(--border) 85%, transparent);
}

.btn-outline,
.btn.outline {
  background: transparent;
  border-color: color-mix(in srgb, var(--border) 80%, transparent);
  color: var(--text);
}

.btn-danger,
.btn.danger {
  background: color-mix(in srgb, var(--danger) 22%, var(--bg));
  border-color: color-mix(in srgb, var(--danger) 60%, transparent);
  color: var(--text);
}

.btn-light,
.btn.light {
  background: var(--bg-soft);
  border-color: color-mix(in srgb, var(--border) 75%, transparent);
  color: var(--text);
}

.btn-small,
.btn.small {
  padding: 0.45rem 0.75rem;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

input,
select,
textarea {
  width: 100%;
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.75rem;
  font-family: inherit;
  transition: border 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: var(--ring);
  background: color-mix(in srgb, var(--bg-card) 92%, transparent);
}

label {
  font-weight: 600;
  color: var(--text-dim);
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border-radius: 16px;
  overflow: hidden;
}

thead th {
  text-align: left;
  padding: 0.65rem 0.6rem;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}

tbody td {
  padding: 0.7rem 0.6rem;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 80%, transparent);
}

tbody tr:hover {
  background: color-mix(in srgb, var(--bg-elevated) 70%, transparent);
}

.badge,
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: color-mix(in srgb, var(--bg-elevated) 90%, transparent);
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  color: var(--text-dim);
}

.badge.danger,
.tag.danger {
  background: color-mix(in srgb, var(--danger) 25%, transparent);
  border-color: color-mix(in srgb, var(--danger) 60%, transparent);
  color: var(--text);
}

.badge.success,
.tag.success {
  background: color-mix(in srgb, var(--success) 18%, transparent);
  border-color: color-mix(in srgb, var(--success) 55%, transparent);
  color: var(--text);
}

.badge.warn,
.tag.warn {
  background: color-mix(in srgb, var(--warning) 25%, transparent);
  border-color: color-mix(in srgb, var(--warning) 55%, transparent);
  color: var(--text);
}

.sheet {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1rem;
}

.toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  background: var(--bg-elevated);
  border: 1px solid color-mix(in srgb, var(--border) 60%, transparent);
  padding: 0.8rem 1rem;
  border-radius: 12px;
  color: var(--text);
  box-shadow: var(--shadow-elevated);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 100;
}

.toast.show {
  opacity: 1;
  transform: none;
}

.toolbar {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  flex-wrap: wrap;
  background: var(--bg-faint);
  border: 1px solid var(--divider);
  border-radius: var(--radius-md);
  padding: 0.75rem 0.95rem;
  box-shadow: var(--shadow-soft);
}

.toolbar[data-variant="minimal"] {
  background: var(--bg-card);
  box-shadow: none;
}

.toolbar__title {
  font-weight: 700;
  color: var(--text);
  margin: 0;
}

.toolbar__subtitle {
  color: var(--text-dim);
  font-size: 0.9rem;
}

.toolbar__spacer {
  flex: 1;
  min-width: 0;
}

.stat-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--divider);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.stat-card__value {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text);
}

.stat-card__label {
  color: var(--text-dim);
  font-size: 0.9rem;
}

.chart-card {
  background: var(--bg-card);
  border: 1px solid var(--divider);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  box-shadow: var(--shadow-soft);
}

.chart-card__title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
}

.chart-card__actions {
  display: flex;
  gap: 0.4rem;
  align-items: center;
}

.progress {
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: var(--bg-faint);
  border: 1px solid var(--divider);
  overflow: hidden;
}

.progress > div,
.progress__fill {
  height: 100%;
  background: linear-gradient(90deg, color-mix(in srgb, var(--accent) 52%, var(--success)), var(--accent));
  width: 0%;
  transition: width 0.25s ease;
}

.list-tile {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--divider);
  background: var(--bg-faint);
  transition:
    transform 0.12s ease,
    border-color 0.2s ease,
    background 0.2s ease,
    box-shadow 0.2s ease;
}

.list-tile:hover {
  background: color-mix(in srgb, var(--bg-card) 78%, var(--bg));
  border-color: color-mix(in srgb, var(--accent) 35%, var(--divider));
  transform: translateY(-1px);
}

.list-tile.is-active {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent);
}

.time-row {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-md);
  border: 1px dashed var(--divider);
  background: var(--bg-faint);
  transition: border-color 0.2s ease, transform 0.12s ease;
}

.time-row:hover {
  border-color: color-mix(in srgb, var(--accent) 40%, var(--divider));
  transform: translateY(-1px);
}

.upload-area {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  align-items: flex-start;
  padding: 0.9rem;
  border-radius: var(--radius-md);
  border: 1px dashed var(--divider);
  background: var(--bg-faint);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.upload-area:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--divider));
  background: color-mix(in srgb, var(--bg-card) 80%, var(--bg));
}

.file-card {
  background: var(--bg-card);
  border: 1px solid var(--divider);
  border-radius: var(--radius-md);
  padding: 0.85rem;
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  transition: transform 0.12s ease;
}

.file-card:hover {
  transform: translateY(-2px);
}

.file-card__preview {
  width: 100%;
  height: 150px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--divider);
  background: var(--bg-faint);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.file-card__preview img,
.file-card__preview embed,
.file-card__preview iframe {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
  border: 0;
}

.file-card__meta {
  color: var(--text-dim);
  font-size: 0.85rem;
}

.search-result {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--divider);
  background: var(--bg-faint);
  margin-top: 0.45rem;
}

.chip-step {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  font-weight: 600;
  border: 1px solid var(--divider);
  background: var(--bg-faint);
  color: var(--text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.chip-step .num {
  width: 24px;
  height: 24px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background: var(--bg-soft);
  color: var(--text-dim);
  font-size: 0.82rem;
  font-weight: 700;
}

.chip-step.is-active {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
  background: color-mix(in srgb, var(--accent) 18%, var(--bg-card));
}

.progress-bar {
  height: 6px;
  border-radius: 999px;
  background: var(--bg-faint);
  overflow: hidden;
  position: relative;
}

.progress-bar > span {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, color-mix(in srgb, var(--accent) 60%, var(--success)), var(--accent));
  transition: width 0.35s ease;
}

.kbd {
  border: 1px solid var(--divider);
  background: var(--bg-faint);
  color: var(--text);
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85em;
}

.badge-min {
  background: var(--bg-faint);
  border: 1px solid var(--divider);
  padding: 2px 8px;
  border-radius: 999px;
  color: var(--text-dim);
  font-weight: 600;
}

.week-grid {
  display: grid;
  gap: 1.1rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.week-day {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  background: var(--bg-card);
  border: 1px solid var(--divider);
  border-radius: var(--radius-lg);
  padding: 1rem 1.1rem;
  box-shadow: var(--shadow-soft);
}

.week-day__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
}

.week-day__title {
  margin: 0;
  font-weight: 700;
  color: var(--text);
}

.week-day__meta {
  color: var(--text-dim);
  font-size: 0.9rem;
}

.task-stack {
  display: grid;
  gap: 0.85rem;
}

.task-card {
  background: var(--bg-faint);
  border: 1px solid var(--divider);
  border-radius: var(--radius-md);
  padding: 0.75rem 0.85rem;
  display: grid;
  gap: 0.6rem;
  box-shadow: var(--shadow-soft);
}

.task-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
}

.task-card__title {
  margin: 0;
  font-weight: 600;
  color: var(--text);
}

.task-card__time {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--divider);
  background: var(--bg-soft);
  color: var(--text);
  font-weight: 600;
  font-size: 0.88rem;
}

.task-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  color: var(--text-dim);
  font-size: 0.85rem;
}

.task-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  justify-content: flex-end;
}

.modal-back,
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: var(--overlay);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 80;
}

.modal-back.show,
.modal-backdrop.show {
  display: flex;
}

.modal {
  width: min(720px, 92vw);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--divider);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.modal header,
.modal__header {
  padding: 1rem 1.2rem;
  border-bottom: 1px solid var(--divider);
  background: var(--bg-faint);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
}

.modal .body,
.modal__body {
  padding: 1.1rem 1.25rem;
  display: grid;
  gap: 0.9rem;
}

.modal footer,
.modal__footer {
  padding: 0.9rem 1.2rem;
  border-top: 1px solid var(--divider);
  background: var(--bg-faint);
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: flex-end;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg-elevated) 90%, transparent);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.82rem;
}

.preview-image {
  width: 100%;
  max-height: 180px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-elevated);
  background: var(--bg-elevated);
}

.preview-embed {
  width: 100%;
  height: 180px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  box-shadow: var(--shadow-elevated);
}

.preview-placeholder {
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  border: 1px dashed color-mix(in srgb, var(--border) 75%, transparent);
  background: color-mix(in srgb, var(--bg-elevated) 80%, transparent);
  font-size: 2rem;
  color: var(--text-dim);
}

.file-preview-card {
  background: color-mix(in srgb, var(--bg-card) 92%, transparent);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow-elevated);
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.surface-row {
  display: grid;
  gap: 0.8rem;
}

.surface-grid {
  display: grid;
  gap: 0.9rem;
}

.surface-grid.cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.surface-grid.cols-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

@media (max-width: 900px) {
  .surface-grid.cols-2,
  .surface-grid.cols-3 {
    grid-template-columns: 1fr;
  }
}

::selection {
  background: color-mix(in srgb, var(--accent) 45%, transparent);
  color: var(--accent-contrast);
}

button:disabled,
.btn[disabled] {
  opacity: 0.55;
  cursor: not-allowed;
  filter: none;
}

input[disabled],
select[disabled],
textarea[disabled] {
  opacity: 0.65;
  cursor: not-allowed;
}

.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.25rem 0.9rem;
  font-weight: 600;
  background: color-mix(in srgb, var(--bg-elevated) 92%, transparent);
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  color: var(--text);
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.pill[data-active="true"] {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 18%, var(--bg-card));
  color: var(--accent-contrast);
}

.pill-muted {
  color: var(--text-dim);
}

.input-inline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 0.6rem;
}

.section-title {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
}

.help {
  color: var(--text-dim);
  font-size: 0.9rem;
}

.divider {
  border: 0;
  border-top: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  margin: 0.9rem 0;
}

.avatar-circle {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--bg-elevated) 90%, transparent);
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  color: var(--text);
  font-weight: 700;
}