:root {
  --color-primary: #43a047;
  --color-primary-dark: #2e7d32;
  --color-accent: #66bb6a;
  --color-light: #c8e6c9;
  --color-bg: #f1f8e9;
  --color-surface: rgba(255, 255, 255, 0.94);
  --color-text: #1b3a1f;
  --color-muted: #558b2f;
  --radius: 12px;
  --shadow: 0 2px 12px rgba(46, 125, 50, 0.12);
  --header-h: 64px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  min-height: 100%;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background-color: var(--color-bg);
  background-image: url("/static/img/site-bg.png");
  background-position: center center;
  background-size: cover;
  background-repeat: no-repeat;
  background-attachment: fixed;
  color: var(--color-text);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

@media (max-width: 768px) {
  body {
    background-attachment: scroll;
    background-position: center top;
  }
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid rgba(200, 230, 201, 0.8);
  position: sticky;
  top: 0;
  z-index: 100;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand h1 {
  margin: 0;
  font-size: 1.1rem;
  color: var(--color-primary-dark);
  line-height: 1.2;
}

.subtitle {
  margin: 0;
  font-size: 0.75rem;
  color: var(--color-muted);
}

.logo {
  flex-shrink: 0;
}

.view-tabs {
  display: flex;
  gap: 4px;
  padding: 8px 12px;
  background: var(--color-surface);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.view-tabs::-webkit-scrollbar {
  display: none;
}

.tab {
  flex: 1 0 auto;
  min-width: 72px;
  padding: 8px 14px;
  border: 1px solid var(--color-light);
  border-radius: 999px;
  background: transparent;
  color: var(--color-primary);
  font-size: 0.875rem;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.tab.active,
.tab:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.main-content {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 12px;
  padding: 12px;
  min-height: 0;
}

.calendar-wrap {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 8px;
  min-height: 420px;
  overflow: hidden;
}

.sidebar {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  overflow-y: auto;
  max-height: calc(100dvh - 220px);
}

.sidebar h2 {
  margin: 0 0 4px;
  font-size: 1rem;
  color: var(--color-primary-dark);
}

.sidebar-period {
  margin: 0 0 12px;
  font-size: 0.8rem;
  color: var(--color-muted);
}

.event-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.event-list li {
  padding: 10px 12px;
  margin-bottom: 8px;
  border-left: 3px solid var(--color-primary);
  background: var(--color-bg);
  border-radius: 0 var(--radius) var(--radius) 0;
  cursor: pointer;
  transition: transform 0.1s;
}

.event-list li:active {
  transform: scale(0.98);
}

.event-list .ev-title {
  font-weight: 600;
  font-size: 0.9rem;
}

.event-list .ev-meta {
  font-size: 0.75rem;
  color: var(--color-muted);
  margin-top: 2px;
}

.event-list .ev-desc {
  font-size: 0.8rem;
  margin-top: 6px;
  color: var(--color-text);
  line-height: 1.4;
}

.empty-hint {
  color: var(--color-muted);
  font-size: 0.875rem;
}

.hidden {
  display: none !important;
}

.app-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px 16px;
  padding: 12px 16px;
  background: var(--color-surface);
  border-top: 1px solid var(--color-light);
  font-size: 0.75rem;
  color: var(--color-muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
}

.btn-danger {
  background: #c44;
  color: #fff;
}

.btn-sm {
  padding: 8px 14px;
  font-size: 0.8rem;
}

.spacer {
  flex: 1;
}

.modal {
  border: none;
  border-radius: var(--radius);
  padding: 0;
  max-width: 420px;
  width: calc(100% - 32px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.modal::backdrop {
  background: rgba(45, 69, 86, 0.45);
}

.modal form {
  padding: 0;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-light);
}

.modal-header h3 {
  margin: 0;
  font-size: 1.1rem;
}

.btn-icon {
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  color: var(--color-muted);
  padding: 4px 8px;
}

.modal label {
  display: block;
  padding: 8px 20px;
  font-size: 0.8rem;
  color: var(--color-muted);
}

.modal input,
.modal textarea {
  display: block;
  width: 100%;
  margin-top: 4px;
  padding: 10px 12px;
  border: 1px solid var(--color-light);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
}

.modal-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 16px 20px;
  border-top: 1px solid var(--color-light);
}

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary-dark);
  color: #fff;
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 0.9rem;
  z-index: 200;
  max-width: min(520px, 92vw);
  text-align: left;
  line-height: 1.45;
  box-shadow: var(--shadow);
}

.toast.error {
  background: #8b3a3a;
}

/* FullCalendar theme */
.fc {
  --fc-border-color: var(--color-light);
  --fc-button-bg-color: var(--color-primary);
  --fc-button-border-color: var(--color-primary);
  --fc-button-hover-bg-color: var(--color-primary-dark);
  --fc-button-hover-border-color: var(--color-primary-dark);
  --fc-today-bg-color: rgba(67, 160, 71, 0.15);
  --fc-event-bg-color: var(--color-primary);
  --fc-event-border-color: var(--color-primary-dark);
  font-size: 0.85rem;
}

.fc .fc-toolbar-title {
  font-size: 1rem !important;
}

.fc .fc-button {
  padding: 6px 10px;
  font-size: 0.8rem;
}

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

  .sidebar {
    max-height: none;
    order: 2;
  }

  .calendar-wrap {
    min-height: 360px;
    order: 1;
  }
}

@media (max-width: 480px) {
  .app-header {
    flex-wrap: wrap;
  }

  .app-header .btn-primary {
    width: 100%;
  }

  .top-nav {
    width: 100%;
    justify-content: flex-start;
    margin-top: 6px;
  }

  .top-nav a {
    font-size: 0.85rem;
    padding: 8px 10px;
  }

  .brand h1 {
    font-size: 1rem;
  }

  .fc .fc-toolbar {
    flex-direction: column;
    gap: 8px;
  }

  .footer-note {
    text-align: center;
    width: 100%;
  }

  /* Homepage readability */
  .container {
    padding: 12px 10px;
  }

  .hero {
    padding: 14px 12px;
  }

  .hero h2 {
    font-size: 1.1rem;
  }
}

/* --- Site homepage blocks --- */
.top-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  align-items: center;
  justify-content: flex-end;
}

.top-nav a {
  color: var(--color-primary-dark);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
}

.top-nav a:hover {
  border-color: var(--color-light);
  background: var(--color-bg);
}

.container {
  width: min(1100px, 100%);
  margin: 0 auto;
  padding: 16px;
}

.hero {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 18px;
}

.hero h2 {
  margin: 0 0 8px;
  font-size: 1.3rem;
  color: var(--color-primary-dark);
}

.hero p {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.55;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 12px;
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
  color: var(--color-primary-dark);
}

.list {
  margin: 0;
  padding-left: 18px;
  color: var(--color-text);
}

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

.pill {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--color-bg);
  border: 1px solid var(--color-light);
  color: var(--color-primary-dark);
  font-size: 0.9rem;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.links a {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--color-light);
  background: var(--color-surface);
  text-decoration: none;
  color: var(--color-primary-dark);
}

.links a:hover {
  background: var(--color-bg);
}

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