h-school/src/HSchool.Client/src/style.css

:root {
  color-scheme: dark;

  --surface: #10141c;
  --surface-raised: #171d28;
  --border: #2a3242;
  --text: #d7e0ef;
  --text-muted: #8b98ad;
  --accent: #4cc9f0;
  --danger: #f2536d;

  font-family: system-ui, "Segoe UI", sans-serif;
  color: var(--text);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--surface);
}

#app {
  max-width: 900px;
  margin: 0 auto;
  padding: 32px 20px 72px;
}

#status {
  position: fixed;
  right: 16px;
  bottom: 12px;
  display: flex;
  gap: 14px;
  font-size: 12px;
  color: var(--text-muted);
}

/* Screens */

.screen__header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.screen__title {
  margin: 0;
  font-size: 24px;
  font-weight: 600;
}

.screen__actions {
  margin-left: auto;
}

.hint {
  margin: 0 0 16px;
  color: var(--text-muted);
  font-size: 14px;
}

.hint--error {
  color: var(--danger);
}

/* School cards */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-raised);
  cursor: pointer;
  transition: border-color 120ms ease, transform 120ms ease;
}

.card:hover,
.card:focus-visible {
  border-color: var(--accent);
  transform: translateY(-2px);
  outline: none;
}

.card__title {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
}

.card__meta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.card__time {
  margin: 0;
  color: var(--text-muted);
  font-size: 14px;
  font-variant-numeric: tabular-nums;
}

.card__badge {
  padding: 2px 8px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-muted);
  font-size: 12px;
}

.card__actions {
  margin-top: 8px;
}

/* Clock */

.clock {
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface-raised);
  text-align: center;
}

.clock__time {
  margin: 0;
  font-size: 56px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.clock__date {
  margin: 4px 0 0;
  font-size: 18px;
}

.clock__weekday {
  margin: 2px 0 0;
  color: var(--text-muted);
  text-transform: capitalize;
}

.clock__controls {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

/* Controls */

.button {
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: 14px;
  cursor: pointer;
  transition: border-color 120ms ease, background 120ms ease;
}

.button:hover:not([disabled]) {
  border-color: var(--accent);
}

.button[disabled] {
  opacity: 0.45;
  cursor: not-allowed;
}

.button--primary {
  border-color: var(--accent);
  color: var(--accent);
}

.button--danger {
  border-color: var(--danger);
  color: var(--danger);
}

.button--small {
  padding: 6px 10px;
  font-size: 13px;
}

.button--icon {
  min-width: 44px;
  font-size: 16px;
}

.button--active {
  border-color: var(--accent);
  background: rgba(76, 201, 240, 0.16);
  color: var(--accent);
}

.input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 14px;
}

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

/* Dialogs */

.dialog {
  min-width: 340px;
  max-width: 440px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface-raised);
  color: var(--text);
}

.dialog::backdrop {
  background: rgba(6, 9, 14, 0.7);
}

.dialog__title {
  margin: 0 0 12px;
  font-size: 19px;
}

.dialog__message {
  margin: 0 0 20px;
  color: var(--text-muted);
}

.dialog__error {
  margin: 0;
  color: var(--danger);
  font-size: 14px;
}

.dialog__actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 20px;
}

.form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field__label {
  font-size: 13px;
  color: var(--text-muted);
}

.field__row {
  display: flex;
  gap: 8px;
}