* {
  box-sizing: border-box;
}

:root {
  --red: #b91c1c;
  --red-dark: #7f1111;
  --red-soft: #fef2f2;
  --red-border: #dc2626;
  --green: #15803d;
  --green-dark: #0f5f2d;
  --green-light: #dcfce7;
  --white: #ffffff;
  --off-white: #f8fafc;
  --gray-border: #e5e7eb;
  --gray-text: #4b5563;
  --dark: #111827;
  --shadow: 0 8px 22px rgba(0, 0, 0, 0.09);
  --red-shadow: 0 10px 30px rgba(185, 28, 28, 0.18);
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background:
    radial-gradient(circle at top, rgba(185, 28, 28, 0.14), transparent 34%),
    linear-gradient(180deg, #fff7f7 0%, #f3f4f6 100%);
  color: var(--dark);
}

.app {
  max-width: 520px;
  margin: 0 auto;
  min-height: 100vh;
  background: var(--white);
  border-left: 4px solid var(--red);
  border-right: 4px solid var(--red);
  box-shadow: 0 0 34px rgba(185, 28, 28, 0.16);
  position: relative;
}

.app::before {
  content: "";
  display: block;
  height: 10px;
  width: 100%;
  background: linear-gradient(90deg, var(--red-dark), var(--red), var(--red-dark));
}

.screen {
  padding: 28px 20px 110px;
}

.hidden {
  display: none;
}

h1 {
  font-size: 34px;
  margin: 0 0 12px;
  letter-spacing: -0.03em;
  color: var(--red-dark);
}

h2 {
  font-size: 22px;
  margin: 0 0 10px;
  letter-spacing: -0.02em;
  color: var(--dark);
}

.subtext {
  color: var(--gray-text);
  font-size: 15px;
  line-height: 1.4;
}

label {
  display: block;
  margin: 24px 0 8px;
  font-weight: 700;
  color: var(--red-dark);
}

input,
select {
  width: 100%;
  min-height: 52px;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  padding: 0 14px;
  font-size: 18px;
  background: var(--white);
}

select {
  margin-top: 12px;
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--red);
  box-shadow: 0 0 0 3px rgba(185, 28, 28, 0.14);
}

button {
  width: 100%;
  min-height: 54px;
  border: none;
  border-radius: 10px;
  margin-top: 18px;
  background: var(--red);
  color: white;
  font-size: 18px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
}

button:hover {
  background: var(--red-dark);
  box-shadow: 0 6px 16px rgba(185, 28, 28, 0.22);
  transform: translateY(-1px);
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.secondary-button {
  width: auto;
  min-height: 44px;
  padding: 0 16px;
  margin: 0;
  background: var(--red);
  color: white;
  border: 2px solid var(--red);
}

.secondary-button:hover {
  background: var(--red-dark);
  color: white;
}

.outline-button {
  background: var(--white);
  color: var(--red);
  border: 2px solid var(--red);
}

.outline-button:hover {
  background: var(--red-soft);
  color: var(--red-dark);
}

#available-button {
  background: var(--green);
  color: white;
}

#available-button:hover {
  background: var(--green-dark);
  box-shadow: 0 6px 16px rgba(21, 128, 61, 0.18);
}

#not-available-button {
  background: var(--white);
  color: var(--red);
  border: 2px solid var(--red);
}

#not-available-button:hover {
  background: var(--red-soft);
}

.link-button {
  width: auto;
  min-height: auto;
  padding: 0;
  margin: 0 0 24px;
  background: transparent;
  color: var(--red);
  font-size: 16px;
  text-align: left;
  box-shadow: none;
}

.link-button:hover {
  background: transparent;
  color: var(--red-dark);
  box-shadow: none;
  transform: none;
}

.top-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--red-soft);
  margin-bottom: 14px;
}

.event-card {
  margin-top: 18px;
  padding: 18px;
  border-radius: 16px;
  border: 2px solid rgba(185, 28, 28, 0.24);
  border-left: 10px solid var(--red);
  background: linear-gradient(180deg, #ffffff 0%, #fffafa 100%);
  box-shadow: var(--red-shadow);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  position: relative;
  overflow: hidden;
}

.event-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 5px;
  width: 100%;
  background: var(--red);
}

.event-card:hover {
  transform: translateY(-2px);
  border-color: rgba(185, 28, 28, 0.45);
  box-shadow: 0 14px 32px rgba(185, 28, 28, 0.22);
}

.event-card h2 {
  margin-bottom: 14px;
  color: var(--red-dark);
}

.event-meta {
  margin: 8px 0;
  color: #374151;
  font-size: 16px;
}

.event-meta strong,
.detail-row strong {
  color: var(--red-dark);
}

.badge {
  display: inline-block;
  padding: 8px 12px;
  margin-bottom: 12px;
  border-radius: 999px;
  background: var(--red-soft);
  color: var(--red-dark);
  border: 1px solid rgba(185, 28, 28, 0.28);
  font-weight: 700;
  font-size: 14px;
}

.detail-block {
  margin-top: 18px;
  padding: 18px;
  border: 1px solid rgba(185, 28, 28, 0.16);
  border-radius: 14px;
  background: #fffafa;
}

.detail-row {
  margin: 12px 0;
  font-size: 17px;
  line-height: 1.4;
}

.sticky-actions {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  max-width: 520px;
  margin: 0 auto;
  padding: 14px 20px 22px;
  background: rgba(255, 255, 255, 0.98);
  border-top: 3px solid var(--red);
  box-shadow: 0 -8px 24px rgba(185, 28, 28, 0.12);
}

.error {
  color: var(--red-dark);
  font-weight: 700;
  min-height: 22px;
}

.success {
  color: var(--green-dark);
  font-weight: 700;
}

.compact { margin: 2px 0 0; }
.main-tabs, .view-toggle { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 18px 0; }
.tab-button, .toggle-button {
  min-height: 46px; margin: 0; padding: 8px; border: 2px solid var(--red);
  background: var(--white); color: var(--red); font-size: 15px;
}
.tab-button.active, .toggle-button.active { background: var(--red); color: var(--white); }
.section-title { margin-top: 24px; color: var(--red-dark); }
.confirmed-card { border-left-color: var(--green); }
.confirmed-card::before { background: var(--green); }
.confirmed-badge {
  color: var(--green-dark); background: var(--green-light);
  border-color: rgba(21, 128, 61, 0.3);
}
.past-toggle {
  margin-top: 28px; min-height: 48px; background: var(--white);
  color: var(--red); border: 2px solid var(--red);
}
.calendar-header { display: grid; grid-template-columns: 44px 1fr 44px; align-items: center; gap: 8px; margin-top: 20px; }
.calendar-header h2 { text-align: center; margin: 0; color: var(--red-dark); }
.calendar-nav { width: 44px; min-height: 44px; margin: 0; padding: 0; font-size: 30px; }
.calendar-weekdays, .calendar-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 5px; }
.calendar-weekdays { margin: 18px 0 8px; text-align: center; color: var(--gray-text); font-size: 12px; font-weight: 700; }
.calendar-day {
  min-width: 0; min-height: 46px; margin: 0; padding: 5px 2px;
  background: #f8fafc; color: var(--dark); border: 1px solid var(--gray-border);
  font-size: 15px; display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.calendar-day:disabled { opacity: 1; cursor: default; }
.calendar-day.blank { border: 0; background: transparent; }
.calendar-day.has-event { background: var(--green-light); color: var(--green-dark); border: 2px solid var(--green); }
.calendar-day.has-event:hover { background: #bbf7d0; color: var(--green-dark); }
.calendar-day i { display: block; width: 6px; height: 6px; margin-top: 4px; border-radius: 50%; background: var(--green); }
.calendar-selection-title { margin-top: 26px; }
#calendar-day-events .event-card { margin-top: 12px; }
@media (max-width: 380px) {
  .screen { padding-left: 14px; padding-right: 14px; }
  .tab-button { font-size: 14px; }
  .calendar-weekdays { font-size: 10px; }
  .calendar-day { min-height: 42px; }
}