/* ===========================
   CSS Variables / Design Tokens
   =========================== */
:root {
  --color-bg: #f0f6ff;
  --color-surface: #ffffff;
  --color-surface-alt: #e8f1fd;
  --color-primary: #1a3a6b;
  --color-primary-dark: #12285a;
  --color-primary-light: #2756a8;
  --color-accent: #2a7be4;
  --color-accent-hover: #1d67cc;
  --color-text: #1a2a40;
  --color-text-muted: #4a5a72;
  --color-border: #c8d9f0;
  --color-success: #16a34a;
  --color-success-bg: #dcfce7;
  --color-danger: #dc2626;
  --color-danger-bg: #fee2e2;
  --color-warning-bg: #fff7ed;
  --color-good: #15803d;
  --color-good-bg: #bbf7d0;
  --color-good-hover: #14532d;
  --color-bad: #b91c1c;
  --color-bad-bg: #fecaca;
  --color-bad-hover: #7f1d1d;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --shadow-card: 0 2px 12px rgba(26, 58, 107, 0.10);
  --shadow-card-hover: 0 6px 24px rgba(26, 58, 107, 0.18);
  --shadow-btn: 0 2px 8px rgba(42, 123, 228, 0.25);

  --spacing-xs: 6px;
  --spacing-sm: 12px;
  --spacing-md: 20px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 680px;

  --transition-fast: 150ms ease;
  --transition-normal: 220ms ease;
}

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

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

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

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

/* ===========================
   Layout Utilities
   =========================== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ===========================
   Header / Nav
   =========================== */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-sm) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 6px rgba(26, 58, 107, 0.07);
}

.site-header .container {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.site-logo {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-logo span.logo-icon {
  font-size: 1.4rem;
  line-height: 1;
}

/* ===========================
   Hero Section
   =========================== */
.hero {
  background: linear-gradient(160deg, #e8f1fd 0%, #f0f6ff 60%, #ffffff 100%);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  text-align: center;
  border-bottom: 1px solid var(--color-border);
}

.hero__eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-accent);
  background: rgba(42, 123, 228, 0.10);
  border-radius: 999px;
  padding: 4px 14px;
  margin-bottom: var(--spacing-sm);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero__title {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.03em;
}

.hero__subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
  max-width: 420px;
  margin-left: auto;
  margin-right: auto;
}

.hero__actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
}

.hero__trust {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  justify-content: center;
}

.hero__trust::before {
  content: "🏛️";
  font-size: 0.9rem;
}

/* ===========================
   Status Banner
   =========================== */
.status-banner {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  font-weight: 500;
  display: none;
  align-items: flex-start;
  gap: 10px;
  margin-top: var(--spacing-md);
  text-align: left;
}

.status-banner.visible {
  display: flex;
}

.status-banner.loading {
  background: var(--color-surface-alt);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}

.status-banner.denied {
  background: #fff7ed;
  color: #7c3d05;
  border: 1px solid #fed7aa;
}

.status-banner.fallback {
  background: #eff6ff;
  color: #1d4ed8;
  border: 1px solid #bfdbfe;
}

.status-banner .status-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ===========================
   Buttons
   =========================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
  text-decoration: none;
  line-height: 1;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

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

.btn--primary {
  background: var(--color-accent);
  color: #ffffff;
  padding: 16px 28px;
  box-shadow: var(--shadow-btn);
  min-width: 260px;
  font-size: 1.05rem;
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 4px 16px rgba(42, 123, 228, 0.40);
}

.btn--primary:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

.btn--directions {
  background: var(--color-primary);
  color: #ffffff;
  padding: 14px 20px;
  box-shadow: 0 2px 8px rgba(26, 58, 107, 0.25);
  width: 100%;
  font-size: 0.97rem;
  border-radius: var(--radius-sm);
}

.btn--directions:hover {
  background: var(--color-primary-dark);
  box-shadow: 0 4px 16px rgba(26, 58, 107, 0.35);
}

.btn--good {
  background: var(--color-good-bg);
  color: var(--color-good);
  padding: 14px 28px;
  font-size: 1rem;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
}

.btn--good:hover {
  background: #86efac;
  border-color: var(--color-good);
}

.btn--bad {
  background: var(--color-bad-bg);
  color: var(--color-bad);
  padding: 14px 28px;
  font-size: 1rem;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
}

.btn--bad:hover {
  background: #fca5a5;
  border-color: var(--color-bad);
}

.btn-text {
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  padding: 8px 4px;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}

.btn-text:hover {
  color: var(--color-accent);
}

/* Spinner for loading state */
.btn-spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ===========================
   Tips Section
   =========================== */
.section {
  padding: var(--spacing-xl) 0;
}

.section + .section {
  border-top: 1px solid var(--color-border);
}

.section__header {
  margin-bottom: var(--spacing-md);
}

.section__title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-xs);
}

.tips-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  box-shadow: var(--shadow-card);
}

.tips-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.tips-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.97rem;
  color: var(--color-text);
  line-height: 1.5;
}

.tips-list .tip-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ===========================
   Restroom List Section
   =========================== */
.restroom-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.restroom-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

.restroom-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.restroom-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
}

.restroom-card__name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.3;
}

.restroom-card__distance {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-accent);
  background: rgba(42, 123, 228, 0.10);
  border-radius: 999px;
  padding: 3px 10px;
  flex-shrink: 0;
  white-space: nowrap;
}

.restroom-card__meta {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.restroom-card__row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.45;
}

.restroom-card__row .row-icon {
  font-size: 0.95rem;
  flex-shrink: 0;
  margin-top: 1px;
}

.accessible-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-success);
  background: var(--color-success-bg);
  border-radius: 999px;
  padding: 3px 10px;
  margin-top: var(--spacing-xs);
}

.restroom-card__actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  align-items: flex-start;
}

/* ===========================
   Empty / Loading States
   =========================== */
.empty-state {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md);
  color: var(--color-text-muted);
}

.empty-state__icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
  display: block;
}

.empty-state__title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.empty-state__text {
  font-size: 0.9rem;
  max-width: 320px;
  margin: 0 auto;
}

/* ===========================
   Feedback Section
   =========================== */
.feedback-section {
  background: linear-gradient(160deg, #f0f6ff 0%, #ffffff 100%);
}

.feedback-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.feedback-card__inner {
  padding: var(--spacing-md) var(--spacing-lg);
}

.feedback-helper {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
  line-height: 1.5;
}

.feedback-quick-btns {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
}

.feedback-form-area {
  border-top: 1px solid var(--color-border);
}

.feedback-form-area iframe {
  display: block;
  width: 100%;
  min-height: 520px;
  border: none;
}

.feedback-placeholder {
  padding: var(--spacing-lg) var(--spacing-md);
  text-align: center;
  color: var(--color-text-muted);
  background: var(--color-surface-alt);
  border-top: 1px solid var(--color-border);
}

.feedback-placeholder__icon {
  font-size: 2.5rem;
  display: block;
  margin-bottom: var(--spacing-sm);
}

.feedback-placeholder__title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.feedback-placeholder__text {
  font-size: 0.85rem;
  max-width: 300px;
  margin: 0 auto;
}

/* ===========================
   Footer
   =========================== */
.site-footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.80);
  padding: var(--spacing-lg) 0;
  text-align: center;
}

.site-footer .container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.site-footer p {
  font-size: 0.82rem;
  line-height: 1.6;
}

.site-footer strong {
  color: #ffffff;
  font-weight: 600;
}

/* ===========================
   Responsive (Desktop)
   =========================== */
@media (min-width: 600px) {
  .hero__title {
    font-size: 2.4rem;
  }

  .hero__subtitle {
    font-size: 1.1rem;
  }

  .hero__actions {
    flex-direction: row;
    justify-content: center;
  }

  .btn--primary {
    min-width: unset;
  }

  .restroom-card__actions {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .btn--directions {
    width: auto;
    flex: 1;
  }

  .tips-card {
    padding: var(--spacing-lg) var(--spacing-xl);
  }
}

@media (min-width: 768px) {
  .hero {
    padding: 64px 0 48px;
  }

  .section {
    padding: 56px 0;
  }
}