:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --panel-soft: #f9fafb;
  --text: #1f2937;
  --muted: #667085;
  --line: #d7dde6;
  --accent: #2563eb;
  --accent-soft: #e8f0ff;
  --accent-strong: #1d4ed8;
  --summary: #f3f4f6;
  --danger: #b42318;
  --danger-soft: #fee4e2;
  --warn: #b54708;
  --warn-soft: #fff1d6;
  --ok: #027a48;
  --ok-soft: #dcfae6;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06);
  --tint-video-bg: #eff6ff;
  --tint-video-border: #bfdbfe;
  --tint-wq-bg: #fff7ed;
  --tint-wq-border: #fed7aa;
  --tint-revisit-bg: #f5f3ff;
  --tint-revisit-border: #ddd6fe;
  --tint-aux-bg: #ecfdf5;
  --tint-aux-border: #a7f3d0;
  --tint-summary-bg: #f9fafb;
  --tint-summary-border: #e5e7eb;
  --bar-video: var(--accent);
  --bar-wq: #c2410c;
  --bar-revisit: #7c3aed;
  --bar-main: var(--bar-video);
  --bar-aux: #047857;
  --bar-summary: var(--muted);
  --shadow-card: 0 1px 3px rgba(16, 24, 40, 0.08), 0 1px 2px rgba(16, 24, 40, 0.04);
  --radius-card: 20px;
  --overlap: 16px;
  --ease-collapse: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-reflow: cubic-bezier(0.2, 0, 0, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.45;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  border: 1px solid var(--accent);
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  padding: 9px 12px;
  cursor: pointer;
}

button:hover {
  background: var(--accent-strong);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

button.secondary {
  background: #fff;
  color: var(--accent);
}

button.secondary:hover {
  background: var(--accent-soft);
}

button.ghost {
  border-color: var(--line);
  background: #fff;
  color: var(--text);
}

button.ghost:hover {
  background: var(--panel-soft);
}

button.star {
  border-color: var(--line);
  background: #fff;
  color: var(--muted);
  width: 28px;
  min-width: 28px;
  height: 28px;
  display: inline-grid;
  place-items: center;
  padding: 0;
  font-size: 20px;
  line-height: 1;
}

button.star.is-on {
  border-color: #f59e0b;
  background: #fffbeb;
  color: #b45309;
}

a {
  color: var(--accent);
}

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
}

input[type="text"],
input[type="password"],
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  padding: 9px 10px;
}

textarea {
  min-height: 96px;
  resize: vertical;
}

.app-shell {
  width: min(980px, calc(100% - 28px));
  margin: 0 auto;
  padding: 24px 0 44px;
}

.loading-card,
.wizard,
.panel,
.card,
.modal-box {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.loading-card,
.wizard {
  margin-top: 8vh;
  padding: 24px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0;
}

.app-header {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: start;
  margin-bottom: 16px;
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
  padding: 12px 0;
}

.app-header h1,
.wizard h1 {
  margin: 0 0 6px;
  font-size: 24px;
  letter-spacing: 0;
}

.app-header p,
.wizard p {
  margin: 0;
  color: var(--muted);
}

.header-main {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  min-width: 0;
}

.title-block {
  min-width: 0;
}

.header-subtitle {
  font-size: 13px;
}

.hamburger {
  width: 36px;
  min-width: 36px;
  height: 36px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--text);
  padding: 0;
  font-size: 18px;
  line-height: 1;
}

.hamburger:hover {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.drawer-root[data-open="true"] .drawer-backdrop {
  opacity: 1;
  pointer-events: auto;
}

.drawer-root[data-open="true"] .drawer {
  transform: translateX(0);
}

.drawer-backdrop {
  position: fixed;
  inset: 0;
  z-index: 20;
  background: rgba(0, 0, 0, 0.32);
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms ease-out;
}

.drawer {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 21;
  width: 260px;
  border-right: 1px solid var(--line);
  background: #fff;
  padding: 16px;
  transform: translateX(-100%);
  transition: transform 280ms cubic-bezier(0.2, 0, 0, 1);
}

.drawer-header {
  padding: 4px 4px 16px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.drawer button {
  display: flex;
  width: 100%;
  align-items: center;
  gap: 10px;
  margin-bottom: 4px;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: var(--text);
  padding: 12px 14px;
  font-size: 15px;
  text-align: left;
}

.drawer button:hover {
  background: var(--accent-soft);
  color: var(--text);
}

.drawer button.is-active {
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 600;
}

.drawer .ico {
  width: 22px;
  text-align: center;
}

.header-actions,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  justify-content: flex-end;
}

.status-line {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0 0;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border-radius: 999px;
  background: var(--panel-soft);
  color: var(--muted);
  padding: 4px 9px;
  font-size: 12px;
  white-space: nowrap;
}

.badge.ok {
  background: var(--ok-soft);
  color: var(--ok);
}

.badge.warn {
  background: var(--warn-soft);
  color: var(--warn);
}

.badge.danger {
  background: var(--danger-soft);
  color: var(--danger);
}

.panel {
  padding: 14px;
  margin-bottom: 12px;
}

.notice {
  border-color: #bfdbfe;
  background: #eff6ff;
}

.notice p {
  margin: 0;
  color: #1e3a8a;
}

.cards {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.card {
  position: relative;
  z-index: var(--z, 1);
  border: 1px solid var(--card-border, var(--line));
  border-radius: var(--radius-card) var(--radius-card) 0 0;
  background: var(--card-bg, #fff);
  box-shadow: none;
  overflow: hidden;
  transition:
    border-radius 240ms var(--ease-reflow),
    transform 240ms var(--ease-reflow),
    opacity 240ms var(--ease-reflow),
    margin 240ms var(--ease-reflow);
  will-change: transform, opacity, margin, border-radius;
}

.card[data-collapsed="true"] {
  margin-bottom: calc(var(--overlap) * -1);
}

.card[data-collapsed="false"] {
  border-radius: var(--radius-card);
  margin-top: 0;
  margin-bottom: 14px;
}

.card[data-collapsed="false"]:last-child {
  margin-bottom: 0;
}

.card.is-shaking {
  animation: card-shake 280ms ease-out;
}

@keyframes card-shake {
  0% { transform: translateX(0); }
  30% { transform: translateX(-3px); }
  60% { transform: translateX(3px); }
  100% { transform: translateX(0); }
}

.card.is-main {
  --card-bg: #fff;
  --card-border: var(--line);
  --prefix-color: var(--muted);
}

.card.is-video {
  --card-bg: var(--tint-video-bg);
  --card-border: var(--tint-video-border);
  --prefix-color: #1d4ed8;
}

.card.is-wq {
  --card-bg: var(--tint-wq-bg);
  --card-border: var(--tint-wq-border);
  --prefix-color: #9a3412;
}

.card.is-revisit {
  --card-bg: var(--tint-revisit-bg);
  --card-border: var(--tint-revisit-border);
  --prefix-color: #6d28d9;
}

.card.is-summary {
  --card-bg: var(--tint-summary-bg);
  --card-border: var(--tint-summary-border);
  --prefix-color: #4b5563;
}

.card.is-aux {
  --card-bg: var(--tint-aux-bg);
  --card-border: var(--tint-aux-border);
  --prefix-color: #065f46;
}

.card-title {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--text);
  padding: 14px 18px;
  text-align: left;
  cursor: pointer;
  user-select: none;
  transition: padding 200ms var(--ease-collapse), opacity 150ms var(--ease-reflow);
}

.card[data-collapsed="true"] .card-title {
  min-height: 0;
  padding: 8px 18px 14px;
}

.card-title:hover {
  background: rgba(255, 255, 255, 0.28);
}

.card[data-state="locked"] .card-title {
  cursor: not-allowed;
  opacity: 0.45;
}

.card[data-state="locked"] .card-title:hover,
.card[data-state="summary"] .card-title:hover {
  background: transparent;
}

.card[data-completed="true"] .card-title {
  cursor: pointer;
  opacity: 0.95;
}

.card-title.static-title {
  cursor: default;
}

.card-title.static-title:hover {
  background: transparent;
}

.title-main {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.title-line {
  display: flex;
  align-items: baseline;
  gap: 8px;
  min-width: 0;
}

.title-text {
  min-width: 0;
  font-size: 15px;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card[data-collapsed="true"] .title-text {
  font-size: 13px;
}

.card[data-collapsed="true"] .title-meta {
  display: none;
}

.card-title .prefix {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.55);
  color: var(--prefix-color, var(--muted));
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  white-space: nowrap;
  flex-shrink: 0;
}

.title-meta {
  color: var(--muted);
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.title-right {
  display: flex;
  align-items: center;
  gap: 6px;
}

.title-right.standalone {
  justify-content: flex-start;
}

.status-icon {
  min-width: 18px;
  color: var(--muted);
  font-size: 15px;
  text-align: center;
}

.card[data-completed="true"] .status-icon {
  color: var(--ok);
}

.card[data-collapsed="true"] .status-icon {
  font-size: 13px;
  transform: scale(0.92);
}

.card[data-collapsed="true"] .star {
  width: 22px;
  min-width: 22px;
  height: 22px;
  font-size: 16px;
  transform: scale(0.92);
}

.card-body {
  display: grid;
  grid-template-rows: 0fr;
  overflow: hidden;
  border-top: 0;
  background: transparent;
  opacity: 0;
  transition:
    grid-template-rows 480ms var(--ease-collapse),
    opacity 360ms var(--ease-collapse);
}

.card-body > .body-inner {
  min-height: 0;
  overflow: hidden;
}

.card[data-collapsed="false"] .card-body {
  grid-template-rows: 1fr;
  opacity: 1;
  transition:
    grid-template-rows 760ms var(--ease-spring),
    opacity 640ms var(--ease-spring) 120ms;
}

.card.is-collapsing .card-body {
  animation: body-collapse 480ms var(--ease-collapse) both;
}

.card.is-expanding .card-body {
  animation: body-expand 760ms var(--ease-spring) both;
}

@keyframes body-collapse {
  from {
    grid-template-rows: 1fr;
    opacity: 1;
  }
  to {
    grid-template-rows: 0fr;
    opacity: 0;
  }
}

@keyframes body-expand {
  from {
    grid-template-rows: 0fr;
    opacity: 0;
  }
  15% {
    opacity: 0;
  }
  to {
    grid-template-rows: 1fr;
    opacity: 1;
  }
}

.body-inner {
  display: grid;
  gap: 12px;
  padding: 4px 18px 18px;
}

.meta-grid,
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.meta-item {
  border: 0;
  border-radius: 0;
  background: transparent;
  padding: 2px 0;
}

.meta-item span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.meta-item strong {
  display: block;
  margin-top: 2px;
  font-size: 14px;
  overflow-wrap: anywhere;
}

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

.hidden {
  display: none !important;
}

.followups,
.reveal-box,
.paste-zone,
.past-list {
  border: 0;
  border-radius: 8px;
  background: rgba(249, 250, 251, 0.72);
  padding: 12px;
}

.past-list {
  display: grid;
  gap: 12px;
  margin-top: 12px;
}

.paste-zone {
  display: grid;
  gap: 8px;
}

.paste-zone.is-busy {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.mood-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.mood-row button {
  min-width: 46px;
  border-color: var(--line);
  background: #fff;
  color: var(--text);
  font-size: 22px;
  line-height: 1;
}

.mood-row button.is-selected {
  border-color: var(--accent);
  background: #fff;
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

button.chip {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--text);
  padding: 6px 12px;
  font-size: 13px;
}

button.chip:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-strong);
}

button.chip.is-selected {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.page-shell {
  max-width: 760px;
  margin: 0 auto;
}

.section-title {
  margin: 0 0 4px;
  font-size: 22px;
  font-weight: 600;
}

.section-sub {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 13px;
}

.filter-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.filter-label {
  align-self: center;
  color: var(--muted);
  font-size: 12px;
  margin-right: 4px;
}

.filter-chip {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--text);
  padding: 5px 11px;
  font-size: 12px;
}

.filter-chip:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.filter-chip.is-on {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 600;
}

.log-range-row {
  margin-bottom: 14px;
}

.log-chart-wrap {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
  padding: 16px 16px 8px;
  margin-bottom: 18px;
}

.log-chart {
  display: block;
  width: 100%;
  height: auto;
}

.legend {
  display: flex;
  gap: 14px;
  margin-top: 6px;
  color: var(--muted);
  font-size: 11px;
}

.legend .dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  vertical-align: middle;
  margin-right: 5px;
}

.log-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 13px;
}

.stat-item strong {
  color: var(--text);
  font-size: 18px;
}

.stat-item.is-ok strong {
  color: #047857;
}

.stat-item.is-accent strong {
  color: var(--accent-strong);
}

.log-table-wrap {
  display: grid;
  gap: 10px;
  overflow-x: auto;
}

.log-table {
  width: 100%;
  min-width: 560px;
  border: 1px solid var(--line);
  border-radius: 12px;
  border-collapse: separate;
  border-spacing: 0;
  overflow: hidden;
  background: #fff;
  font-size: 13px;
}

.log-table th,
.log-table td {
  padding: 9px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.log-table th {
  background: #f9fafb;
  color: var(--muted);
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  user-select: none;
}

.log-table th .arr {
  color: var(--accent);
  margin-left: 2px;
}

.log-table tr:last-child td {
  border-bottom: 0;
}

.badge-hit {
  color: #047857;
  font-weight: 600;
}

.badge-miss {
  color: #b45309;
}

.show-more {
  justify-self: center;
  border-color: var(--line);
  background: #fff;
  color: var(--text);
  font-size: 13px;
}

.show-more:hover {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.library-tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 14px;
  overflow-x: auto;
}

.library-tab {
  flex-shrink: 0;
  border: 0;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  background: transparent;
  color: var(--muted);
  padding: 10px 14px;
  margin-bottom: -1px;
  font-size: 14px;
}

.library-tab:hover {
  background: transparent;
  color: var(--accent-strong);
}

.library-tab .count {
  display: inline-block;
  margin-left: 4px;
  border-radius: 999px;
  background: var(--line);
  color: var(--muted);
  padding: 1px 6px;
  font-size: 12px;
  font-weight: 500;
}

.library-tab.is-active {
  border-bottom-color: var(--accent-strong);
  color: var(--accent-strong);
  font-weight: 600;
}

.library-tab.is-active .count {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.library-filter-row .filter-label:not(:first-child) {
  margin-left: 8px;
}

.library-list {
  margin-top: 12px;
}

.library-list .card:last-child {
  border-radius: var(--radius-card);
  margin-bottom: 0;
}

.library-card .card-title {
  min-height: 0;
  padding: 8px 18px 14px;
}

.library-card[data-collapsed="false"] .card-title {
  padding: 14px 18px;
}

.library-status {
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.55);
  color: var(--muted);
  padding: 2px 8px;
  font-size: 11px;
  white-space: nowrap;
}

.library-detail-row {
  margin-bottom: 6px;
  font-size: 13px;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.library-detail-row .k {
  color: var(--muted);
  font-size: 12px;
  margin-right: 4px;
}

.hint {
  margin-top: 24px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  color: var(--muted);
  padding: 12px 14px;
  font-size: 12px;
  line-height: 1.7;
}

.hint strong {
  color: var(--text);
}

.page-empty {
  border: 1px dashed var(--line);
  border-radius: 16px;
  background: #fff;
  padding: 36px 18px;
}

.answer-reveal {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.answer-hint {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

button.btn-reveal-answer {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
  padding: 11px 18px;
  font-size: 15px;
  font-weight: 700;
  box-shadow: 0 0 0 3px var(--accent-soft);
}

button.btn-reveal-answer:hover {
  background: var(--accent-strong);
}

.day-divider {
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

.past-day {
  display: grid;
  gap: 10px;
}

.past-day h2 {
  margin: 0;
  font-size: 16px;
}

.past-record {
  display: grid;
  gap: 8px;
  border-top: 1px solid var(--line);
  padding-top: 10px;
}

.sync-footer {
  display: flex;
  justify-content: flex-end;
  margin-top: 12px;
}

.wizard-steps {
  display: flex;
  gap: 8px;
  margin: 14px 0 18px;
}

.wizard-step {
  flex: 1;
  height: 5px;
  border-radius: 999px;
  background: var(--line);
}

.wizard-step.is-active {
  background: var(--accent);
}

.wizard-form {
  display: grid;
  gap: 12px;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(17, 24, 39, 0.42);
  z-index: 20;
}

.modal-box {
  width: min(460px, 100%);
  padding: 18px;
}

.modal-box h2 {
  margin: 0 0 8px;
  font-size: 20px;
}

.modal-box p {
  margin: 0 0 14px;
  color: var(--muted);
}

.toast-stack {
  position: fixed;
  right: 16px;
  bottom: 16px;
  display: grid;
  gap: 8px;
  z-index: 30;
}

.toast {
  max-width: 360px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 8px 24px rgba(16, 24, 40, 0.16);
  padding: 10px 12px;
  color: var(--text);
}

.toast.is-error {
  border-color: var(--danger-soft);
  color: var(--danger);
}

.empty-state {
  padding: 18px;
  text-align: center;
  color: var(--muted);
}

.noscript {
  margin: 20px;
}

@media (prefers-reduced-motion: reduce) {
  .drawer,
  .drawer-backdrop,
  .card,
  .card-body,
  .card-title,
  .star {
    transition: none !important;
    animation: none !important;
  }
}

@media (max-width: 760px) {
  .app-shell {
    width: min(100% - 20px, 980px);
    padding-top: 14px;
  }

  .app-header,
  .meta-grid,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .header-actions,
  .sync-footer {
    justify-content: stretch;
  }

  .header-actions button,
  .sync-footer button {
    flex: 1 1 auto;
  }
}