:root {
  color-scheme: light;
  font-family: "Noto Sans JP", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background-color: #f6f7fb;
  color: #1f2933;
  --spot-card-bg-full: #d7ebff;
  --spot-card-bg-half: #fff3cd;
  --spot-card-bg-low: #ffe5d0;
  --spot-card-bg-zero: #ffd6d6;
  --spot-card-border: #cbd5e1;
  --spot-card-text: #1f2933;
  --map-legend-border: rgba(148, 163, 184, 0.4);
  --color-status-completed-fg: #047857;
  --color-status-completed-bg: rgba(16, 185, 129, 0.15);
  --color-status-completed-border: rgba(5, 150, 105, 0.2);
  --color-status-empty-fg: #64748b;
  --color-status-empty-bg: rgba(148, 163, 184, 0.15);
  --color-status-empty-border: rgba(148, 163, 184, 0.2);
  --btn-radius: 999px;
  --btn-transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  --btn-primary-gradient: linear-gradient(135deg, #2563eb, #1d4ed8);
  --btn-primary-gradient-hover: linear-gradient(135deg, #1d4ed8, #1e40af);
  --btn-primary-shadow: 0 6px 16px rgba(37, 99, 235, 0.25);
  --btn-primary-shadow-hover: 0 10px 22px rgba(37, 99, 235, 0.3);
  --btn-danger-gradient: linear-gradient(135deg, #dc2626, #b91c1c);
  --btn-danger-gradient-hover: linear-gradient(135deg, #b91c1c, #991b1b);
  --btn-danger-shadow: 0 6px 16px rgba(220, 38, 38, 0.22);
  --btn-danger-shadow-hover: 0 10px 24px rgba(220, 38, 38, 0.28);
  --btn-disabled-bg: #cbd5f5;
  --btn-disabled-color: #475569;
  --btn-outline-color: rgba(37, 99, 235, 0.35);
  --page-transition-duration: 0.3s;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

html[data-auth-state='checking'] body {
  visibility: hidden;
}

html[data-auth-state='authenticated'] body,
html[data-auth-state='unauthenticated'] body,
html[data-auth-state='error'] body {
  visibility: visible;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  border: 0;
  padding: 0;
  clip: rect(0 0 0 0);
  overflow: hidden;
}

form {
  display: grid;
  gap: 0.75rem;
}

label {
  display: grid;
  gap: 0.25rem;
  font-size: 0.9rem;
}

input,
textarea,
select,
button,
.btn {
  font: inherit;
}

input,
textarea,
select {
  padding: 0.5rem;
  border-radius: 0.5rem;
  border: 1px solid #cbd5f5;
  background: #ffffff;
  color: #0f172a;
}

input:focus,
textarea:focus,
select:focus {
  outline: 2px solid #2563eb;
  outline-offset: 1px;
}

button,
.btn {
  --btn-bg: var(--btn-primary-gradient);
  --btn-bg-hover: var(--btn-primary-gradient-hover);
  --btn-color: #ffffff;
  --btn-border: none;
  --btn-border-hover: var(--btn-border);
  --btn-shadow: var(--btn-primary-shadow);
  --btn-shadow-hover: var(--btn-primary-shadow-hover);
  --btn-transform: none;
  --btn-hover-transform: translateY(-1px);
  padding: 0.55rem 1.35rem;
  border-radius: var(--btn-radius);
  border: var(--btn-border);
  background: var(--btn-bg);
  color: var(--btn-color);
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  box-shadow: var(--btn-shadow);
  transition: var(--btn-transition);
  transform: var(--btn-transform);
}

button:hover,
button:focus-visible,
.btn:hover,
.btn:focus-visible {
  background: var(--btn-bg-hover);
  color: var(--btn-color);
  border: var(--btn-border-hover);
  box-shadow: var(--btn-shadow-hover);
  transform: var(--btn-hover-transform);
}

button:focus-visible,
.btn:focus-visible {
  outline: 3px solid var(--btn-outline-color);
  outline-offset: 2px;
}

button:disabled,
.btn[aria-disabled="true"],
.btn:disabled {
  background: var(--btn-disabled-bg);
  color: var(--btn-disabled-color);
  border: var(--btn-disabled-border, none);
  box-shadow: var(--btn-disabled-shadow, none);
  cursor: not-allowed;
  transform: none;
  opacity: 0.85;
}

a.btn {
  text-decoration: none;
}

a.btn[aria-disabled="true"] {
  pointer-events: none;
}

.home-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0;
  color: #1e3a8a;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  border-radius: 0.5rem;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
  white-space: nowrap;
}

.home-link::before {
  content: "←";
  font-size: 0.95em;
}

.home-link:hover,
.home-link:focus-visible {
  color: #1d4ed8;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-decoration-color: currentColor;
}

.app-header .home-link {
  align-self: center;
  padding: 0.35rem 0.85rem;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.app-header .home-link:hover,
.app-header .home-link:focus-visible {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.4);
  color: #ffffff;
  text-decoration: none;
}

.btn-primary,
.btn.btn-primary {
  --btn-bg: var(--btn-primary-gradient);
  --btn-bg-hover: var(--btn-primary-gradient-hover);
  --btn-shadow: var(--btn-primary-shadow);
  --btn-shadow-hover: var(--btn-primary-shadow-hover);
  --btn-border: none;
  --btn-border-hover: none;
  --btn-color: #ffffff;
}

.btn-secondary,
.btn.btn-secondary {
  --btn-bg: rgba(15, 23, 42, 0.08);
  --btn-bg-hover: rgba(37, 99, 235, 0.16);
  --btn-color: #1d4ed8;
  --btn-border: 1px solid rgba(37, 99, 235, 0.3);
  --btn-border-hover: 1px solid rgba(37, 99, 235, 0.45);
  --btn-shadow: none;
  --btn-shadow-hover: none;
  --btn-hover-transform: none;
}

.date-navigation-buttons {
  display: inline-flex;
  gap: 0.25rem;
  align-items: center;
  margin-left: 0.5rem;
}

.btn-date-nav {
  --btn-bg: rgba(37, 99, 235, 0.12);
  --btn-bg-hover: rgba(37, 99, 235, 0.20);
  --btn-color: #1d4ed8;
  --btn-border: 1px solid rgba(37, 99, 235, 0.24);
  --btn-border-hover: 1px solid rgba(37, 99, 235, 0.40);
  --btn-shadow: none;
  --btn-shadow-hover: none;
  --btn-hover-transform: none;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  font-size: 1rem;
  font-weight: bold;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.375rem;
}

.btn-date-nav:disabled {
  --btn-bg: rgba(148, 163, 184, 0.12);
  --btn-color: #94a3b8;
  --btn-border: 1px solid rgba(148, 163, 184, 0.24);
  cursor: not-allowed;
  opacity: 0.6;
}

.btn-danger,
.btn.btn-danger {
  --btn-bg: var(--btn-danger-gradient);
  --btn-bg-hover: var(--btn-danger-gradient-hover);
  --btn-color: #ffffff;
  --btn-border: none;
  --btn-border-hover: none;
  --btn-shadow: var(--btn-danger-shadow);
  --btn-shadow-hover: var(--btn-danger-shadow-hover);
}

.btn-secondary:disabled {
  --btn-disabled-bg: rgba(226, 232, 240, 0.85);
  --btn-disabled-color: #94a3b8;
  --btn-disabled-border: 1px solid rgba(148, 163, 184, 0.45);
}

.result {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  color: #0f172a;
}

.result-error {
  color: #ef4444;
}

.card {
  background: #ffffff;
  border-radius: 0.75rem;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
  padding: 1rem;
}

.card h1,
.card h2,
.card h3 {
  margin-top: 0;
}

.list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin: 0;
  padding: 0;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.form-hint {
  margin: 0;
  font-size: 0.85rem;
  color: #475569;
}

.stack-form {
  display: grid;
  gap: 0.75rem;
}

.grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 640px) {
  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.checkbox-inline,
.radio-inline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
}

.map {
  width: 100%;
  min-height: 320px;
}

.map-disabled {
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: #f1f5f9;
  color: #475569;
  border-radius: 0.75rem;
  padding: 1.5rem;

}

/* ===== Page Transition Animations ===== */

/* Fade-in on page load */
@keyframes page-fade-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Fade-out before navigation */
@keyframes page-fade-out {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(-6px);
  }
}

body.page-enter {
  animation: page-fade-in var(--page-transition-duration) cubic-bezier(0.22, 1, 0.36, 1) both;
}

body.page-exit {
  animation: page-fade-out 0.2s cubic-bezier(0.55, 0, 1, 0.45) both;
  pointer-events: none;
}

/* Loading progress bar at top of page */
.page-loading-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, #2563eb, #06b6d4, #2563eb);
  background-size: 200% 100%;
  z-index: 99999;
  transition: width 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  animation: loading-bar-shimmer 1.5s ease-in-out infinite;
  border-radius: 0 2px 2px 0;
  box-shadow: 0 0 8px rgba(37, 99, 235, 0.4);
}

.page-loading-bar.is-loading {
  width: 85%;
}

.page-loading-bar.is-done {
  width: 100%;
  opacity: 0;
  transition: width 0.2s ease, opacity 0.3s ease 0.2s;
}

@keyframes loading-bar-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Staggered entry for child elements */
@keyframes stagger-fade-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

body.page-enter .card,
body.page-enter .menu-card,
body.page-enter .mypage-section,
body.page-enter .filter-panel,
body.page-enter .spot-list-card,
body.page-enter .reservation-detail-card {
  animation: stagger-fade-in 0.4s cubic-bezier(0.22, 1, 0.36, 1) both;
}

body.page-enter .card:nth-child(1),
body.page-enter .menu-card:nth-child(1),
body.page-enter .mypage-section:nth-child(1) { animation-delay: 0.05s; }

body.page-enter .card:nth-child(2),
body.page-enter .menu-card:nth-child(2),
body.page-enter .mypage-section:nth-child(2) { animation-delay: 0.1s; }

body.page-enter .card:nth-child(3),
body.page-enter .menu-card:nth-child(3),
body.page-enter .mypage-section:nth-child(3) { animation-delay: 0.15s; }

body.page-enter .card:nth-child(4),
body.page-enter .menu-card:nth-child(4),
body.page-enter .mypage-section:nth-child(4) { animation-delay: 0.2s; }

body.page-enter .card:nth-child(5),
body.page-enter .menu-card:nth-child(5) { animation-delay: 0.25s; }

body.page-enter .card:nth-child(6),
body.page-enter .menu-card:nth-child(6) { animation-delay: 0.3s; }

/* Improved focus transitions for inputs */
input:focus,
textarea:focus,
select:focus {
  transition: outline-color 0.15s ease, box-shadow 0.15s ease;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* Accessibility: respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .page-loading-bar {
    animation: none;
  }
}