:root {
  --bg: #0f141b;
  --panel: #171d27;
  --line: #2a3342;
  --text: #e8edf5;
  --muted: #9aa6b8;
  --accent: #5b8def;
  --accent-2: #3ecf8e;
  --danger: #ef6b6b;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(1200px 500px at 10% -10%, #1c2a44 0%, transparent 55%),
    radial-gradient(900px 400px at 100% 0%, #1a2f2a 0%, transparent 50%),
    var(--bg);
  color: var(--text);
  font: 15px/1.5 "Segoe UI", "Microsoft YaHei", sans-serif;
}

.hidden {
  display: none !important;
}

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

.auth-card,
.panel,
.card {
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  border: 1px solid var(--line);
  border-radius: 16px;
  backdrop-filter: blur(8px);
}

.auth-card {
  width: min(420px, 100%);
  padding: 28px;
  display: grid;
  gap: 14px;
}

h1,
h2 {
  margin: 0;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.sub,
.muted {
  color: var(--muted);
}

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

input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #0d1218;
  color: var(--text);
  padding: 11px 12px;
  font: inherit;
}

input:focus {
  outline: none;
  border-color: var(--accent);
}

.auth-actions,
.topbar-actions,
.panel-head {
  display: flex;
  gap: 10px;
  align-items: center;
}

button {
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  background: var(--accent);
  color: white;
  font: inherit;
  cursor: pointer;
}

button.ghost {
  background: #243041;
  color: var(--text);
}

.error {
  color: var(--danger);
  margin: 0;
  font-size: 13px;
}

.app-view {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 48px;
  display: grid;
  gap: 18px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
}

.cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.card {
  padding: 16px;
}

.card .label {
  color: var(--muted);
  font-size: 13px;
}

.card .value {
  margin-top: 8px;
  font-size: 28px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.panel {
  padding: 18px;
}

.panel-head {
  justify-content: space-between;
  margin-bottom: 12px;
}

.bar-list {
  display: grid;
  gap: 8px;
}

.bar-row {
  display: grid;
  grid-template-columns: 88px 1fr 64px;
  gap: 10px;
  align-items: center;
}

.bar-row .name,
.bar-row .num {
  color: var(--muted);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.bar-track {
  height: 10px;
  border-radius: 999px;
  background: #10161f;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: inherit;
}

.hour-grid .bar-row {
  grid-template-columns: 40px 1fr 56px;
}

.session-list {
  display: grid;
  gap: 8px;
}

.session {
  display: grid;
  grid-template-columns: 120px 90px 1fr;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #121821;
}

.session .meta,
.session .mins {
  color: var(--muted);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.session .note {
  font-weight: 600;
  overflow-wrap: anywhere;
}

@media (max-width: 900px) {
  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .session {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .topbar {
    flex-direction: column;
  }

  .cards {
    grid-template-columns: 1fr;
  }
}