:root {
  --brand-navy: #002d62;
  --brand-blue: #005aab;
  --brand-accent: #f26f21;
  --brand-cloud: #f2f6fb;
  --text-dark: #1f2a37;
  --text-muted: #5f6b7a;
  --border-color: #dfe7f3;
  --status-normal: #00a85a;
  --status-warning: #f56f6f;
  --status-earlylate: #d84315;
  --status-absent: #8b1a1a;
  --status-weekend: #e5ecf6;
  --status-weekend-presence: #a9c8ff;
  --status-nodata: #f2dede;
  --shadow-soft: 0 10px 25px rgba(0, 45, 98, 0.1);
  font-family: 'Source Sans Pro', 'Microsoft YaHei', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

body {
  margin: 0;
  background: var(--brand-cloud);
  color: var(--text-dark);
  line-height: 1.6;
  font-family: var(--font-family, 'Source Sans Pro', 'Microsoft YaHei', system-ui, sans-serif);
}

.hero {
  background: linear-gradient(120deg, var(--brand-navy), var(--brand-blue));
  color: #fff;
  padding: 3rem clamp(1.5rem, 5vw, 4rem);
  box-shadow: var(--shadow-soft);
}

.hero__content {
  max-width: 720px;
}

.hero h1 {
  margin: 0.4rem 0 0.2rem;
  font-size: clamp(2rem, 3vw, 2.9rem);
}

.hero .eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.75rem;
  opacity: 0.8;
}

.hero .subhead {
  margin: 0.5rem 0 0;
  font-size: 1.05rem;
  opacity: 0.95;
}

.hero__meta {
  margin-top: 1.5rem;
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  font-size: 0.95rem;
  opacity: 0.9;
}

.hero__meta .meta-label {
  display: block;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

main {
  padding: clamp(1.5rem, 4vw, 3rem);
  max-width: 1400px;
  margin: 0 auto;
}

.toolbar {
  margin-top: -3rem;
  margin-bottom: 1.5rem;
  background: #fff;
  padding: 1.5rem;
  border-radius: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: flex-start;
  box-shadow: var(--shadow-soft);
}

.control {
  display: flex;
  flex-direction: column;
  font-size: 0.9rem;
  color: var(--text-muted);
  flex: 1 1 220px;
}

.control span {
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 0.35rem;
}

.control select {
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 0.6rem 0.75rem;
  font-size: 1rem;
  font-family: inherit;
  color: var(--text-dark);
}

.toolbar .control select {
  width: 140px;
}

.toolbar .control {
  flex-direction: row;
  align-items: center;
  gap: 0.5rem;
}

.toolbar .control span {
  margin-bottom: 0;
}

.security-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 19, 51, 0.65);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  padding: 1.5rem;
}

.security-card {
  background: #fff;
  border-radius: 1rem;
  padding: 2rem;
  max-width: 360px;
  width: 100%;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.2);
  text-align: center;
  font-family: inherit;
}

.security-card h2 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  color: var(--brand-navy);
}

.security-card p {
  margin: 0 0 1rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.security-card input {
  width: 100%;
  padding: 0.65rem 0.9rem;
  border-radius: 0.6rem;
  border: 1px solid var(--border-color);
  font-size: 1rem;
  margin-bottom: 0.75rem;
}

.security-card button {
  width: 100%;
  padding: 0.65rem 0.9rem;
  border-radius: 0.6rem;
  border: none;
  background: var(--brand-blue);
  color: #fff;
  font-size: 1rem;
  cursor: pointer;
}

.security-card button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.security-error {
  min-height: 1.2rem;
  color: var(--status-warning);
  font-size: 0.85rem;
  margin-top: 0.75rem;
}

.security-lock {
  overflow: hidden;
}

.lang-toggle {
  border: 1px solid var(--border-color);
  background: var(--brand-cloud);
  color: var(--text-dark);
  padding: 0.45rem 0.9rem;
  border-radius: 0.75rem;
  font-size: 0.9rem;
  cursor: pointer;
}

.lang-toggle:hover {
  border-color: var(--brand-blue);
  color: var(--brand-blue);
}

.control--hint {
  background: var(--brand-cloud);
  border-radius: 0.75rem;
  padding: 0.8rem 1rem;
  flex: 2 1 320px;
}

.legend {
  margin: 2rem 0 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  font-size: 0.9rem;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
}

.swatch {
  width: 1.5rem;
  height: 0.8rem;
  border-radius: 999px;
  border: 1px solid rgba(0, 0, 0, 0.1);
}

.swatch--normal {
  background: var(--status-normal);
}

.swatch--warning {
  background: linear-gradient(135deg, var(--status-warning), var(--status-earlylate));
}

.swatch--absent {
  background: var(--status-absent);
}

.swatch--weekend {
  background: var(--status-weekend);
}

.swatch--weekend-presence {
  background: var(--status-weekend-presence);
}

.swatch--nodata {
  background: var(--status-nodata);
}

.summary-panel {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-bottom: 2rem;
}

.tab-nav {
  display: inline-flex;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.toolbar .tab-nav {
  margin-bottom: 0;
}

.tab-button {
  border: 1px solid var(--border-color);
  background: #fff;
  color: var(--text-dark);
  padding: 0.6rem 1.25rem;
  border-radius: 999px;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tab-button.is-active {
  background: var(--brand-blue);
  color: #fff;
  border-color: var(--brand-blue);
  box-shadow: 0 5px 15px rgba(0, 90, 171, 0.3);
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: block;
}

.chart-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.chart-card {
  background: #fff;
  border-radius: 1rem;
  padding: 1.25rem;
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.chart-card header h3 {
  margin: 0;
  font-size: 1.1rem;
  color: var(--brand-navy);
}

.chart-card header p {
  margin: 0.15rem 0 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.bar-chart {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.bar-chart__item {
  display: grid;
  grid-template-columns: 90px 1fr 140px;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.85rem;
}

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

.bar-chart__track {
  background: var(--brand-cloud);
  border-radius: 999px;
  height: 8px;
  position: relative;
  overflow: hidden;
}

.bar-chart__fill {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  border-radius: 999px;
}

.bar-chart__fill--normal {
  background: var(--status-normal);
}

.bar-chart__fill--anomaly {
  background: var(--status-warning);
}

.bar-chart__value {
  font-weight: 600;
  color: var(--brand-navy);
  text-align: right;
}

.bar-chart__meta {
  grid-column: 2 / 4;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.bar-chart__item.is-focused .bar-chart__label,
.bar-chart__item.is-focused .bar-chart__value {
  color: var(--brand-accent);
}

.bar-chart__item.is-focused .bar-chart__track {
  box-shadow: 0 0 0 2px rgba(0, 90, 171, 0.2);
}

.metric-card {
  background: #fff;
  border-radius: 1rem;
  padding: 1.25rem;
  box-shadow: var(--shadow-soft);
  border-top: 4px solid var(--brand-accent);
}

.metric-value {
  font-size: 2rem;
  font-weight: 700;
  margin: 0.25rem 0;
  color: var(--brand-navy);
}

.metric-label {
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}

.metric-note {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0;
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.month-row {
  background: #fff;
  border-radius: 1.25rem;
  padding: 1rem;
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.month-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
}

.month-header h2 {
  margin: 0;
  font-size: 1.2rem;
  color: var(--brand-navy);
}

.month-header p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.month-calendar {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.weekday-row {
  display: grid;
  grid-template-columns: repeat(7, minmax(80px, 1fr));
  gap: 0.15rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.month-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(80px, 1fr));
  gap: 0.2rem;
}

.day-cell {
  border-radius: 0.9rem;
  padding: 0.45rem;
  min-height: 82px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid rgba(0, 0, 0, 0.06);
}

.day-cell .date-label {
  font-weight: 600;
  font-size: 0.85rem;
}

.day-cell .time-span {
  font-size: 0.78rem;
}

.day-cell .tag {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
}

.day-cell .note {
  font-size: 0.8rem;
  color: #a03434;
}

.status-normal {
  background: rgba(0, 168, 90, 0.12);
  border-color: rgba(0, 168, 90, 0.4);
}

.status-late,
.status-early,
.status-late_early {
  background: rgba(245, 111, 111, 0.18);
  border-color: var(--status-warning);
}

.status-absent {
  background: rgba(139, 26, 26, 0.15);
  border-color: var(--status-absent);
  color: #621313;
}

.status-weekend {
  background: var(--status-weekend);
  border-style: dashed;
}

.status-weekend_presence {
  background: rgba(169, 200, 255, 0.45);
  border-color: #5f8fe0;
}

.status-no_data {
  background: var(--status-nodata);
  border-style: dotted;
}

.compact-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.compact-row {
  background: #fff;
  border-radius: 1rem;
  padding: 0.85rem 1rem;
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.compact-row__header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.compact-row__title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--brand-navy);
}

.compact-row__meta {
  display: flex;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.compact-day-strip {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(26px, 1fr));
  gap: 0.25rem;
}

.compact-dot {
  height: 26px;
  border-radius: 0.45rem;
  border: 1px solid rgba(0, 0, 0, 0.08);
  font-size: 0.65rem;
  font-weight: 600;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.compact-dot[data-tooltip] {
  position: relative;
}

.compact-dot[data-tooltip]:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  top: 140%;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.8);
  color: #fff;
  padding: 0.25rem 0.4rem;
  border-radius: 0.25rem;
  font-size: 0.7rem;
  white-space: nowrap;
  z-index: 2;
}

.compact-legend {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.compact-legend span {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.compact-legend .swatch {
  width: 1rem;
  height: 0.6rem;
}

.compact-dot.status-normal {
  background: var(--status-normal);
  border-color: transparent;
}

.compact-dot.status-late,
.compact-dot.status-early,
.compact-dot.status-late_early {
  background: var(--status-warning);
  border-color: transparent;
}

.compact-dot.status-absent {
  background: var(--status-absent);
  border-color: transparent;
}

.compact-dot.status-weekend {
  background: var(--status-weekend);
  color: var(--text-muted);
}

.compact-dot.status-weekend_presence {
  background: var(--status-weekend-presence);
  border-color: transparent;
  color: var(--brand-navy);
}

.compact-dot.status-no_data {
  background: var(--status-nodata);
  color: var(--text-muted);
}

.placeholder {
  background: transparent;
  border: none;
}

@media (max-width: 1100px) {
  .weekday-row,
  .month-grid {
    grid-template-columns: repeat(7, minmax(70px, 1fr));
  }
  .day-cell {
    min-height: 75px;
  }
}

@media (max-width: 768px) {
  .weekday-row,
  .month-grid {
    grid-template-columns: repeat(7, minmax(58px, 1fr));
  }
  .day-cell {
    min-height: 70px;
    padding: 0.35rem;
  }
}

@media (max-width: 640px) {
  .weekday-row,
  .month-grid {
    grid-template-columns: repeat(7, minmax(48px, 1fr));
  }
  .day-cell .time-span {
    font-size: 0.7rem;
  }
  .day-cell {
    min-height: 65px;
  }
}