*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-holiday: #e74c3c;
  --color-no-school: #e67e22;
  --color-early-dismissal: #f39c12;
  --color-break: #9b59b6;
  --color-first-day: #27ae60;
  --color-last-day: #2980b9;
  --color-school: #7f8c8d;

  --bg: #f5f7fa;
  --card-bg: #ffffff;
  --text: #2c3e50;
  --text-muted: #7f8c8d;
  --border: #e1e8ed;
  --header-bg: #1a3a5c;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
header {
  background: var(--header-bg);
  color: white;
  padding: 0.75rem 1rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}

.header-inner {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
}

.header-subscribe-label {
  font-size: 0.75rem;
  opacity: 0.7;
  white-space: nowrap;
}

.logo {
  font-size: 1.75rem;
}

header h1 {
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.2;
}

.subtitle {
  opacity: 0.75;
  font-size: 0.8rem;
  margin-top: 0.1rem;
}

/* Main */
main {
  flex: 1;
  max-width: 860px;
  margin: 0 auto;
  padding: 2rem 1rem;
  width: 100%;
}

/* Subscribe Section */
.subscribe-section {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.75rem;
  margin-bottom: 2rem;
}

.subscribe-section h2 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.subscribe-section > p {
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  font-size: 0.95rem;
}

.button-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.subscribe-note {
  font-size: 0.82rem;
  color: var(--text-muted);
  background: #f0f4f8;
  border-radius: 6px;
  padding: 0.6rem 0.9rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.75rem;
  border: none;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover {
  opacity: 0.88;
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn-google  { background: #4285f4; color: white; }
.btn-apple   { background: #1c1c1e; color: white; }
.btn-outlook { background: #0078d4; color: white; }
.btn-download { background: #27ae60; color: white; }

/* Events Section */
.events-section h2 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.events-header {
  margin-bottom: 1.25rem;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  margin-top: 0.6rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot.holiday         { background: var(--color-holiday); }
.dot.no-school       { background: var(--color-no-school); }
.dot.early-dismissal { background: var(--color-early-dismissal); }
.dot.break           { background: var(--color-break); }
.dot.first-day       { background: var(--color-first-day); }
.dot.last-day        { background: var(--color-last-day); }
.dot.school          { background: var(--color-school); }

/* Month Group */
.month-group {
  margin-bottom: 1.75rem;
}

.month-label {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.8rem;
  padding: 0 0 0.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0.75rem;
}

/* Event Card */
.event-card {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.8rem 1rem;
  margin-bottom: 0.5rem;
  border-left: 4px solid var(--border);
}

.event-card.holiday         { border-left-color: var(--color-holiday); }
.event-card.no-school       { border-left-color: var(--color-no-school); }
.event-card.early-dismissal { border-left-color: var(--color-early-dismissal); }
.event-card.break           { border-left-color: var(--color-break); }
.event-card.first-day       { border-left-color: var(--color-first-day); }
.event-card.last-day        { border-left-color: var(--color-last-day); }
.event-card.school          { border-left-color: var(--color-school); }

.event-card.today-anchor {
  outline: 2px solid #3498db;
  outline-offset: -2px;
  scroll-margin-top: 80px;
}

.event-date {
  min-width: 90px;
  font-size: 0.82rem;
  color: var(--text-muted);
  padding-top: 0.1rem;
  white-space: nowrap;
}

.event-title {
  font-weight: 500;
  font-size: 0.95rem;
}

.event-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

/* Share Button */
.share-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  padding: 0.3rem;
  border-radius: 4px;
  margin-left: auto;
  flex-shrink: 0;
  transition: color 0.15s, background 0.15s;
  align-self: center;
}

.share-btn:hover {
  color: var(--text);
  background: var(--bg);
}

/* Toast */
#share-toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(1rem);
  background: var(--header-bg);
  color: white;
  padding: 0.5rem 1.25rem;
  border-radius: 8px;
  font-size: 0.85rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 200;
}

#share-toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Loading / empty */
.loading {
  color: var(--text-muted);
  text-align: center;
  padding: 2rem;
}

.error-msg {
  color: var(--text);
  background: #f8f9fa;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  font-size: 0.9rem;
  text-align: center;
  line-height: 1.6;
}

.error-msg strong {
  display: block;
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

/* Footer */
footer {
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  padding: 1.25rem 1rem;
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-muted);
}

footer a {
  color: var(--header-bg);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

footer code {
  background: #f0f4f8;
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  font-size: 0.78rem;
  word-break: break-all;
}

.footer-note {
  margin-top: 0.4rem;
  font-style: italic;
}

@media (max-width: 600px) {
  header h1 {
    font-size: 1rem;
  }
  .subtitle {
    display: none;
  }
  .header-actions {
    width: 100%;
  }
  .header-actions .btn-label {
    display: none;
  }
  .event-card {
    flex-direction: column;
    gap: 0.25rem;
    position: relative;
  }
  .share-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
  }
  .event-date {
    min-width: auto;
  }
}