:root {
  color-scheme: light;
  --bg: #eef3ef;
  --panel: #ffffff;
  --ink: #18201d;
  --muted: #61716b;
  --line: #d8e1dc;
  --green: #23745a;
  --green-dark: #155840;
  --blue: #2f6fa3;
  --amber: #bd7a23;
  --steel: #586978;
  --shadow: 0 18px 40px rgba(31, 43, 36, 0.1);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 8% 4%, rgba(47, 111, 163, 0.13), transparent 28rem),
    linear-gradient(135deg, rgba(35, 116, 90, 0.14), transparent 34rem),
    var(--bg);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
}

button { font: inherit; }

[hidden] { display: none !important; }

.login-view {
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: 24px;
}

.login-panel {
  display: grid;
  gap: 18px;
  width: min(100%, 420px);
  padding: 28px;
  border: 1px solid rgba(24, 32, 29, 0.08);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow);
}

.login-panel h1 {
  font-size: clamp(30px, 5vw, 42px);
}

.login-copy {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.45;
}

.login-field {
  display: grid;
  gap: 7px;
  color: #25322e;
  font-size: 13px;
  font-weight: 700;
}

.login-field input {
  width: 100%;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 12px;
  background: #fbfcfb;
  color: var(--ink);
  font: inherit;
}

.login-field input:focus {
  border-color: var(--green);
  outline: 3px solid rgba(35, 116, 90, 0.15);
}

.login-error {
  margin: -4px 0 0;
  color: #9b2f24;
  font-size: 13px;
  font-weight: 700;
}

.login-submit,
.logout-button {
  border: 0;
  border-radius: 6px;
  background: var(--green);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
}

.login-submit {
  height: 46px;
}

.login-submit:hover,
.logout-button:hover {
  background: var(--green-dark);
}

.shell {
  width: min(1380px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 42px;
}

.topbar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  min-height: 132px;
  margin-bottom: 20px;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.78);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.68)),
    linear-gradient(90deg, rgba(47, 111, 163, 0.12), rgba(35, 116, 90, 0.1));
  box-shadow: var(--shadow);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logout-button {
  height: 42px;
  padding: 0 16px;
}

.unit-toggle {
  width: 52px;
  height: 42px;
  border: 1px solid rgba(47, 111, 163, 0.28);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
}

.unit-toggle:hover {
  border-color: var(--blue);
  background: rgba(47, 111, 163, 0.12);
}

.unit-toggle[aria-pressed="true"] {
  background: var(--blue);
  color: #fff;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--green);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1, h2, h3 { margin: 0; letter-spacing: 0; }
h1 { font-size: clamp(28px, 4vw, 44px); line-height: 1.05; }
h2 { font-size: 22px; }
h3 { font-size: 15px; }

.period-picker {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 42px;
  padding: 0 12px;
  border: 1px solid rgba(35, 116, 90, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.calendar-trigger {
  min-width: 210px;
  height: 32px;
  border: 0;
  border-radius: 6px;
  outline: 0;
  background: rgba(35, 116, 90, 0.1);
  color: var(--ink);
  font-weight: 700;
  text-align: left;
  cursor: pointer;
}

.calendar-popover {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  z-index: 20;
  width: 306px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 45px rgba(31, 43, 36, 0.18);
}

.calendar-head {
  display: grid;
  grid-template-columns: 34px 1fr 34px;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.calendar-head strong { text-align: center; text-transform: capitalize; }

.calendar-nav {
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  cursor: pointer;
}

.calendar-weekdays, .calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 5px;
}

.calendar-weekdays {
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 11px;
  text-align: center;
}

.calendar-day {
  width: 34px;
  height: 34px;
  border: 1px solid rgba(35, 116, 90, 0.25);
  border-radius: 6px;
  background: rgba(35, 116, 90, 0.08);
  color: var(--ink);
  cursor: pointer;
}

.calendar-day:hover:not(:disabled) { border-color: var(--green); background: rgba(35, 116, 90, 0.15); }
.calendar-day.selected { border-color: var(--green); background: var(--green); color: #fff; }
.calendar-day.outside { color: #95a29d; }
.calendar-day:disabled { border-color: transparent; background: transparent; color: #c8d0cc; cursor: default; }

.status {
  margin-bottom: 16px;
  padding: 12px 14px;
  border: 1px solid rgba(189, 122, 35, 0.35);
  border-radius: 8px;
  background: rgba(189, 122, 35, 0.08);
  color: #69430f;
}

.section { margin-top: 18px; }

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 42px;
  margin-bottom: 12px;
  padding: 10px 14px;
  border: 1px solid rgba(24, 32, 29, 0.08);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 10px 24px rgba(31, 43, 36, 0.05);
}

.section-head span, .chart-card span, .metric small {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 16px;
  align-items: stretch;
}

.dashboard-grid > .metric:not(.tall) {
  grid-column: span 2;
}

.front-grid {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(220px, 0.9fr);
  gap: 16px;
}

.front-grid > .metric {
  justify-content: center;
}

.front-grid > .metric strong {
  margin-top: 0;
}

.metric, .chart-card {
  min-width: 0;
  border: 1px solid rgba(24, 32, 29, 0.08);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow);
}

.metric {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 128px;
  padding: 16px;
}

.metric::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 5px;
  background: var(--steel);
}

.metric-primary::before { background: var(--blue); }
.metric-success::before { background: var(--green); }
.metric-neutral::before { background: var(--amber); }

.metric.tall { min-height: 220px; }
.dashboard-grid > .metric.tall {
  grid-column: span 3;
  min-height: 190px;
}
.metric-label {
  color: #25322e;
  font-size: 14px;
  font-weight: 700;
}

.metric strong {
  margin-top: auto;
  color: var(--ink);
  font-size: clamp(23px, 2.3vw, 36px);
  line-height: 1;
}

.metric small { min-height: 32px; }

.chart-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px;
}

.chart-card > div {
  display: grid;
  gap: 4px;
}

.chart-card.wide {
  grid-column: span 8;
  grid-row: span 2;
}

canvas {
  display: block;
  width: 100%;
  height: 260px;
  border: 1px solid rgba(24, 32, 29, 0.06);
  border-radius: 8px;
  background: #fbfcfb;
}

#flightsChart { height: 210px; }

.chart-tooltip {
  position: fixed;
  z-index: 50;
  display: grid;
  gap: 4px;
  max-width: 230px;
  padding: 10px 12px;
  border: 1px solid rgba(24, 32, 29, 0.12);
  border-radius: 8px;
  background: rgba(24, 32, 29, 0.94);
  color: #fff;
  box-shadow: 0 14px 32px rgba(24, 32, 29, 0.22);
  font-size: 12px;
  pointer-events: none;
}

.chart-tooltip[hidden] {
  display: none;
}

.chart-tooltip strong { font-size: 12px; }
.chart-tooltip span { color: rgba(255, 255, 255, 0.82); }

@media (max-width: 1120px) {
  .dashboard-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .dashboard-grid > .metric:not(.tall),
  .dashboard-grid > .metric.tall {
    grid-column: span 3;
  }
  .chart-card.wide { grid-column: span 6; }
}

@media (max-width: 820px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    min-height: 0;
    padding: 18px;
  }
  .topbar-actions {
    align-items: stretch;
    flex-direction: column;
    width: 100%;
  }
  .unit-toggle,
  .period-picker, .summary-grid, .dashboard-grid, .front-grid { width: 100%; grid-template-columns: 1fr; }
  .dashboard-grid > .metric:not(.tall),
  .dashboard-grid > .metric.tall,
  .chart-card.wide { grid-column: auto; }
}

@media (max-width: 560px) {
  .shell { width: min(100% - 20px, 1380px); padding-top: 18px; }
  .login-view { padding: 16px; }
  .login-panel { padding: 22px; }
  .section-head { align-items: flex-start; flex-direction: column; }
  .calendar-trigger { min-width: 0; width: 100%; }
  .calendar-popover { left: 0; right: auto; width: min(306px, 100%); }
}