:root {
  color-scheme: dark;
  --tg-bg: #0f172a;
  --tg-text: #e5eefc;
  --tg-hint: #94a3b8;
  --tg-card: #172036;
  --tg-accent: #4f46e5;
  --tg-accent-text: #ffffff;
  --danger: #ef4444;
  --border: rgba(148, 163, 184, 0.18);
  --shadow: 0 18px 40px rgba(15, 23, 42, 0.35);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top right, rgba(79, 70, 229, 0.22), transparent 28%),
    radial-gradient(circle at bottom left, rgba(16, 185, 129, 0.15), transparent 22%),
    var(--tg-bg);
  color: var(--tg-text);
}

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

button,
input,
textarea,
select {
  border: 1px solid var(--border);
  border-radius: 14px;
}

button {
  cursor: pointer;
  background: rgba(148, 163, 184, 0.1);
  color: var(--tg-text);
  padding: 0.75rem 1rem;
}

button.primary {
  background: var(--tg-accent);
  color: var(--tg-accent-text);
  border-color: transparent;
}

input,
textarea,
select {
  width: 100%;
  background: rgba(15, 23, 42, 0.35);
  color: var(--tg-text);
  padding: 0.8rem 0.95rem;
}

label {
  display: grid;
  gap: 0.5rem;
  color: var(--tg-hint);
}

.app-shell {
  width: min(1180px, calc(100vw - 24px));
  margin: 0 auto;
  padding: 16px 0 40px;
}

.card {
  background: color-mix(in srgb, var(--tg-card) 88%, transparent);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.hero,
.calendar,
.details-grid {
  margin-top: 16px;
}

.hero {
  padding: 22px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: start;
}

.hero__badges {
  display: grid;
  gap: 10px;
  justify-items: end;
}

.hero h1,
.calendar h2,
.form-card h3,
.details-card h3 {
  margin: 0;
}

.hero__text,
.calendar__header p,
.empty-state,
.event-card p {
  color: var(--tg-hint);
}

.badge,
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.75rem;
}

.badge {
  background: rgba(79, 70, 229, 0.14);
  border: 1px solid rgba(79, 70, 229, 0.25);
  border-radius: 999px;
  padding: 0.5rem 0.85rem;
}

.calendar {
  padding: 18px;
}

.calendar__header,
.form-card__header,
.details-card__header,
.event-card__header,
.event-card__actions,
.form-actions,
.form-row,
.calendar__tools {
  display: flex;
  gap: 12px;
}

.calendar__header,
.form-card__header,
.details-card__header {
  justify-content: space-between;
  align-items: center;
}

.weekday-row,
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 10px;
}

.weekday-row {
  margin: 18px 0 10px;
  color: var(--tg-hint);
  text-align: center;
}

.calendar-cell {
  min-height: 92px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  text-align: left;
  background: rgba(15, 23, 42, 0.35);
}

.calendar-cell--muted {
  opacity: 0.45;
}

.calendar-cell--selected {
  outline: 2px solid var(--tg-accent);
  background: rgba(79, 70, 229, 0.18);
}

.calendar-cell--today {
  border-color: rgba(16, 185, 129, 0.55);
}

.calendar-cell__day {
  font-weight: 700;
  font-size: 1rem;
}

.calendar-cell__count {
  font-size: 0.78rem;
  color: var(--tg-hint);
}

.details-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 16px;
}

.details-card,
.form-card {
  padding: 18px;
}

.event-list {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.event-card {
  display: grid;
  grid-template-columns: 10px 1fr;
  background: rgba(15, 23, 42, 0.34);
  border: 1px solid var(--border);
  border-radius: 18px;
  overflow: hidden;
}

.event-card__body {
  padding: 14px;
}

.event-card__header,
.event-card__actions,
.form-actions {
  justify-content: space-between;
  align-items: center;
}

.event-card__actions button:last-child {
  color: #fecaca;
  border-color: rgba(239, 68, 68, 0.3);
}

.event-form {
  display: grid;
  gap: 14px;
  margin-top: 14px;
}

.recurrence-box {
  display: grid;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(15, 23, 42, 0.28);
}

.recurrence-box__text {
  margin: 6px 0 0;
  color: var(--tg-hint);
}

.recurrence-row {
  align-items: end;
}

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

.import-export label {
  cursor: pointer;
  color: var(--tg-text);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0.75rem 1rem;
  background: rgba(148, 163, 184, 0.1);
}

.empty-state {
  margin: 18px 0 0;
}

@media (max-width: 900px) {
  .details-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .app-shell {
    width: min(100vw - 16px, 100%);
  }

  .hero,
  .calendar,
  .details-card,
  .form-card {
    padding: 16px;
    border-radius: 20px;
  }

  .hero,
  .calendar__header,
  .form-card__header,
  .details-card__header,
  .form-row,
  .form-actions,
  .calendar__tools {
    flex-direction: column;
    align-items: stretch;
  }

  .weekday-row,
  .calendar-grid {
    gap: 6px;
  }

  .calendar-cell {
    min-height: 82px;
    padding: 10px;
  }
}