/* === Theme Custom Properties === */
/* Primary palette (light mode) is the no-JS default. */
/* JavaScript overrides these at runtime based on season + time/system prefs. */
:root {
  --bg: #F7FFF3;
  --bg-surface: #E5FFDE;
  --text: #352208;
  --text-muted: #5A4A33;
  --navbar-bg: #13674B;
  --navbar-text: #E5FFDE;
  --accent: #13674B;
  --accent-hover: #0E4F39;
  --border: #9CBFA7;
  --card-bg: #FFFFFF;
  --card-border: #9CBFA7;
  --badge-available-bg: #C8E6C9;
  --badge-available-text: #13674B;
  --badge-upcoming-bg: #FFF9C4;
  --badge-upcoming-text: #F57F17;
  --badge-unavailable-bg: #FFCDD2;
  --badge-unavailable-text: #C62828;
}

/* === Reset & Base === */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  transition: background-color 0.3s, color 0.3s;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

img {
  max-width: 100%;
  height: auto;
}

/* === Top Navigation Bar === */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--navbar-bg);
  padding: 0.75rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 4px rgb(0 0 0 / 15%);
  transition: background-color 0.3s;
}

.navbar-brand {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--navbar-text);
  text-decoration: none;
}

.navbar-brand:hover {
  color: var(--navbar-text);
  text-decoration: none;
  opacity: 0.9;
}

.navbar-links {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

.navbar-links a {
  color: var(--navbar-text);
  font-weight: 500;
  opacity: 0.85;
  transition: opacity 0.2s;
}

.navbar-links a:hover,
.navbar-links a.active {
  color: var(--navbar-text);
  opacity: 1;
  text-decoration: underline;
}

/* === Palette Control === */
.palette-control {
  display: flex;
  align-items: center;
  gap: 6px;
}

.palette-swatch {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid rgb(255 255 255 / 30%);
  cursor: pointer;
  padding: 0;
  transition: border-color 0.2s, transform 0.15s, opacity 0.2s;
}

.palette-swatch:hover {
  transform: scale(1.2);
  border-color: rgb(255 255 255 / 70%);
}

.palette-swatch.active {
  border-color: #fff;
  box-shadow: 0 0 0 2px rgb(255 255 255 / 40%);
}

.palette-swatch:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none;
}

.palette-lock {
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid rgb(255 255 255 / 30%);
  border-radius: 4px;
  color: var(--navbar-text);
  cursor: pointer;
  padding: 3px 5px;
  margin-left: 4px;
  transition: background-color 0.2s, border-color 0.2s;
}

.palette-lock:hover {
  background-color: rgb(255 255 255 / 12%);
  border-color: rgb(255 255 255 / 60%);
}

.palette-lock[aria-pressed="true"] {
  background-color: rgb(255 255 255 / 20%);
  border-color: rgb(255 255 255 / 70%);
}

.palette-lock .lock-icon.locked {
  display: none;
}

.palette-lock .lock-icon.unlocked {
  display: block;
}

.palette-lock[aria-pressed="true"] .lock-icon.locked {
  display: block;
}

.palette-lock[aria-pressed="true"] .lock-icon.unlocked {
  display: none;
}

/* Hamburger menu (mobile) */
.navbar-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 4px;
}

.navbar-toggle span {
  display: block;
  width: 24px;
  height: 3px;
  background-color: var(--navbar-text);
  border-radius: 2px;
}

/* === Layout === */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* === About Page === */
.about-hero {
  text-align: center;
  margin-bottom: 2rem;
}

.about-hero h1 {
  font-size: 2.2rem;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.about-hero p {
  font-size: 1.1rem;
  color: var(--text-muted);
}

.about-section {
  margin-bottom: 2rem;
}

.about-section h2 {
  font-size: 1.5rem;
  color: var(--accent);
  border-bottom: 2px solid var(--border);
  padding-bottom: 0.25rem;
  margin-bottom: 0.75rem;
}

.about-section p,
.about-section ul {
  margin-bottom: 0.75rem;
}

.about-section ul {
  padding-left: 1.5rem;
}

/* === Schedule Page === */
.schedule-header {
  text-align: center;
  margin-bottom: 2rem;
}

.schedule-header h1 {
  font-size: 2rem;
  color: var(--accent);
}

.schedule-header p {
  color: var(--text-muted);
}

.schedule-table-wrapper {
  overflow-x: auto;
}

.schedule-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card-bg);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgb(0 0 0 / 10%);
  transition: background-color 0.3s;
}

.schedule-table thead {
  background-color: var(--navbar-bg);
  color: var(--navbar-text);
}

.schedule-table th,
.schedule-table td {
  padding: 0.75rem 1rem;
  text-align: left;
}

.schedule-table tbody tr:nth-child(even) {
  background-color: var(--bg-surface);
}

.schedule-table tbody tr:hover {
  background-color: var(--border);
}

.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  font-size: 0.85rem;
  font-weight: 600;
}

.badge-available {
  background-color: var(--badge-available-bg);
  color: var(--badge-available-text);
}

.badge-upcoming {
  background-color: var(--badge-upcoming-bg);
  color: var(--badge-upcoming-text);
}

.badge-unavailable {
  background-color: var(--badge-unavailable-bg);
  color: var(--badge-unavailable-text);
}

.schedule-note {
  display: block;
  font-size: 0.8rem;
  color: var(--text-color);
  opacity: 0.7;
  margin-top: 0.25rem;
}

/* === Care Sheet Page === */
.care-header {
  text-align: center;
  margin-bottom: 2rem;
}

.care-header h1 {
  font-size: 2rem;
  color: var(--accent);
}

.care-header p {
  color: var(--text-muted);
  font-style: italic;
}

.care-image {
  text-align: center;
  margin-bottom: 1.5rem;
}

.care-image img {
  max-height: 300px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgb(0 0 0 / 15%);
}

.care-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.care-detail-card {
  background: var(--card-bg);
  padding: 1rem;
  border-radius: 8px;
  border-left: 4px solid var(--accent);
  box-shadow: 0 1px 3px rgb(0 0 0 / 8%);
  transition: background-color 0.3s;
}

.care-detail-card h3 {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
  text-transform: uppercase;
}

.care-detail-card p {
  font-size: 1.05rem;
  color: var(--text);
}

.care-body h2 {
  font-size: 1.4rem;
  color: var(--accent);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.care-body p {
  margin-bottom: 0.75rem;
}

.care-back-link {
  display: inline-block;
  margin-top: 2rem;
  padding: 0.5rem 1rem;
  background-color: var(--bg-surface);
  border-radius: 4px;
  color: var(--accent);
  font-weight: 500;
  transition: background-color 0.3s;
}

.care-back-link:hover {
  background-color: var(--border);
  color: var(--accent-hover);
  text-decoration: none;
}

/* === Care Index Page === */
.care-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.care-list-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 1rem;
  text-decoration: none;
  color: var(--text);
  transition: box-shadow 0.2s, transform 0.15s, background-color 0.3s;
}

.care-list-card:hover {
  box-shadow: 0 4px 12px rgb(0 0 0 / 12%);
  transform: translateY(-2px);
  text-decoration: none;
  color: var(--text);
}

.care-list-image {
  flex-shrink: 0;
  width: 72px;
  height: 72px;
  border-radius: 8px;
  overflow: hidden;
}

.care-list-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.care-list-info h2 {
  font-size: 1.15rem;
  color: var(--accent);
  margin-bottom: 0.15rem;
}

.care-list-variety {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 0.15rem;
}

.care-list-difficulty {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* === Virtual Pet === */
.vpet-container {
  max-width: 480px;
  margin: 0 auto;
}

.vpet-display {
  text-align: center;
  padding: 2rem 1rem;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  margin-bottom: 1.5rem;
}

.vpet-sprite {
  font-size: 4rem;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.vpet-name {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.25rem;
}

.vpet-status {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-style: italic;
}

.vpet-speech {
  font-size: 0.95rem;
  color: var(--accent);
  font-style: italic;
  min-height: 1.4em;
  margin-top: 0.5rem;
}

.vpet-stats {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.vpet-stat {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.vpet-stat label {
  width: 60px;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text);
}

.vpet-bar {
  flex: 1;
  height: 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.vpet-bar-fill {
  height: 100%;
  border-radius: 8px;
  transition: width 0.3s;
}

.vpet-bar-fill.good {
  background-color: var(--accent);
}

.vpet-bar-fill.warn {
  background-color: var(--badge-upcoming-text);
}

.vpet-bar-fill.danger {
  background-color: var(--badge-unavailable-text);
}

.vpet-stat-val {
  width: 30px;
  text-align: right;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.vpet-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.vpet-btn {
  padding: 0.6rem 1.5rem;
  background: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s;
}

.vpet-btn:hover {
  background: var(--accent-hover);
}

.vpet-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.vpet-log {
  font-size: 0.85rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  padding-top: 0.75rem;
}

.vpet-log div {
  padding: 0.2rem 0;
}

/* === 404 Page === */
.not-found {
  text-align: center;
  padding: 4rem 1rem;
}

.not-found-emoji {
  font-size: 5rem;
  line-height: 1;
  margin-bottom: 1rem;
}

.not-found h1 {
  font-size: 4rem;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.not-found-message {
  font-size: 1.4rem;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.not-found-sub {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.not-found-link {
  display: inline-block;
  padding: 0.6rem 1.5rem;
  background-color: var(--accent);
  color: var(--bg);
  border-radius: 6px;
  font-weight: 600;
  transition: background-color 0.2s;
}

.not-found-link:hover {
  background-color: var(--accent-hover);
  color: var(--bg);
  text-decoration: none;
}

/* === Footer === */
.footer {
  text-align: center;
  padding: 1.5rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
  margin-top: 3rem;
}

/* === Retro Easter Egg Theme === */
body.retro-theme {
  font-family: "Times New Roman", Times, serif;
  transition: none;
}

body.retro-theme * {
  transition: none !important;
  border-radius: 0 !important;
  box-shadow: none !important;
}

body.retro-theme .navbar {
  position: static;
  border-bottom: 2px solid #0000FF;
}

body.retro-theme .schedule-table {
  border: 1px solid #000000;
}

body.retro-theme .schedule-table th,
body.retro-theme .schedule-table td {
  border: 1px solid #000000;
}

body.retro-theme .badge {
  border: 1px solid currentColor;
  font-weight: normal;
}

body.retro-theme .care-detail-card {
  border: 1px solid #000000;
  border-left: 1px solid #000000;
}

body.retro-theme .care-list-card {
  border: 1px solid #000000;
}

body.retro-theme a {
  text-decoration: underline;
}

body.retro-theme .palette-swatch {
  border: 2px solid #0000FF;
}

body.retro-theme .palette-swatch.active {
  border-color: #000000;
}

body.retro-theme .footer {
  border-top: 2px solid #0000FF;
}

/* === Cherry Blossom Easter Egg Theme === */
body.cherry-blossom-theme {
  font-family: "Georgia", "Garamond", serif;
}

body.cherry-blossom-theme .navbar {
  border-bottom: 2px solid var(--border);
}

body.cherry-blossom-theme .about-hero h1,
body.cherry-blossom-theme .schedule-header h1,
body.cherry-blossom-theme .care-header h1 {
  font-style: italic;
}

body.cherry-blossom-theme .care-detail-card {
  border-left-color: var(--accent);
}

body.cherry-blossom-theme .footer {
  font-style: italic;
}

/* === Responsive === */
@media (max-width: 768px) {
  .navbar {
    flex-wrap: wrap;
  }

  .navbar-toggle {
    display: flex;
  }

  .navbar-links {
    display: none;
    flex-direction: column;
    width: 100%;
    gap: 0;
    margin-top: 0.5rem;
  }

  .navbar-links.open {
    display: flex;
  }

  .navbar-links li {
    padding: 0.5rem 0;
    border-top: 1px solid rgb(255 255 255 / 15%);
  }

  .palette-control {
    order: 3;
    width: 100%;
    justify-content: center;
    padding-top: 0.5rem;
    border-top: 1px solid rgb(255 255 255 / 15%);
    margin-top: 0.5rem;
  }

  .about-hero h1 {
    font-size: 1.6rem;
  }

  .schedule-table th,
  .schedule-table td {
    padding: 0.5rem 0.6rem;
    font-size: 0.9rem;
  }

  .care-details {
    grid-template-columns: 1fr;
  }
}