@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Playfair+Display:wght@600;700&display=swap");

:root {
  --bg-gradient: linear-gradient(180deg, #0f1c2e 0%, #162941 40%, #1e3c58 100%);
  --bg-panel: rgba(15, 28, 46, 0.72);
  --bg-card: rgba(19, 33, 52, 0.88);
  --bg-card-soft: rgba(255, 255, 255, 0.08);
  --highlight: #f7a046;
  --highlight-soft: rgba(247, 160, 70, 0.16);
  --accent: #6ec6b8;
  --accent-soft: rgba(110, 198, 184, 0.18);
  --text-primary: #f5f7fa;
  --text-secondary: rgba(245, 247, 250, 0.78);
  --text-muted: rgba(245, 247, 250, 0.58);
  --border-soft: rgba(255, 255, 255, 0.12);
  --shadow-soft: 0 20px 40px rgba(13, 24, 40, 0.45);
  --shadow-card: 0 14px 28px rgba(8, 17, 30, 0.35);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --max-width: 1120px;
  --control-height: 52px;
  --transition: 180ms ease-in-out;
}

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

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

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--text-primary);
  background: var(--bg-gradient);
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: url("https://www.nps.gov/npgallery/GetAsset/f2ac7ba9-b980-40f6-afdd-796b2c69d76c/proxy/hires")
    center/cover;
  opacity: 0.12;
  z-index: -2;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 20% 20%, rgba(247, 160, 70, 0.35), transparent 55%),
    radial-gradient(circle at 80% 10%, rgba(110, 198, 184, 0.32), transparent 60%),
    radial-gradient(circle at 50% 90%, rgba(53, 103, 178, 0.28), transparent 60%);
  z-index: -1;
}

a {
  color: inherit;
  text-decoration: none;
}

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

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

header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(16px);
  background: rgba(12, 22, 36, 0.82);
  border-bottom: 1px solid var(--border-soft);
  z-index: 20;
}

.nav-wrapper {
  margin: 0 auto;
  max-width: var(--max-width);
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  font-family: "Playfair Display", Georgia, serif;
  font-size: 1.375rem;
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--highlight-soft);
  color: var(--highlight);
  font-size: 1.15rem;
  box-shadow: inset 0 0 0 1px rgba(247, 160, 70, 0.35);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  font-weight: 500;
  font-size: 0.98rem;
}

.nav-links a {
  padding: 8px 0;
  position: relative;
  color: var(--text-secondary);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transform: scaleX(0.6);
  transform-origin: center;
  transition: opacity var(--transition), transform var(--transition);
}

.nav-links a:hover,
.nav-links a:focus {
  color: var(--text-primary);
}

.nav-links a:hover::after,
.nav-links a:focus::after {
  opacity: 1;
  transform: scaleX(1);
}

main {
  margin: 0 auto;
  max-width: var(--max-width);
  padding: 64px 24px 120px;
}

.directory-header {
  margin-bottom: 36px;
  display: grid;
  gap: 12px;
}

.directory-header h1 {
  margin: 0;
  font-family: "Playfair Display", Georgia, serif;
  font-size: clamp(2.2rem, 5vw, 3.1rem);
}

.directory-header p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.6;
}

.hero {
  background: var(--bg-panel);
  border-radius: var(--radius-lg);
  padding: 64px 56px;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--border-soft);
  display: grid;
  gap: 24px;
}

.hero h1 {
  margin: 0;
  font-family: "Playfair Display", Georgia, serif;
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  letter-spacing: 0.02em;
  line-height: 1.1;
}

.hero p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 26px;
  height: var(--control-height);
  border-radius: var(--radius-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition), border var(--transition);
  cursor: pointer;
}

.btn-disabled {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 26px;
  height: var(--control-height);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
  cursor: not-allowed;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.btn-primary {
  background: linear-gradient(135deg, #f78733, #f7a046);
  color: #191e26;
  box-shadow: 0 18px 36px rgba(247, 135, 51, 0.28);
}

.btn-primary:hover,
.btn-primary:focus {
  transform: translateY(-2px);
  box-shadow: 0 24px 44px rgba(247, 135, 51, 0.32);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
  color: var(--text-primary);
}

.btn-secondary:hover,
.btn-secondary:focus {
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--highlight-soft);
  color: var(--highlight);
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  box-shadow: inset 0 0 0 1px rgba(247, 160, 70, 0.26);
}

section {
  margin-top: 72px;
}

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 32px;
}

.section-heading h2 {
  margin: 0;
  font-size: 1.85rem;
  font-family: "Playfair Display", Georgia, serif;
  letter-spacing: 0.02em;
}

.section-heading p {
  margin: 0;
  color: var(--text-muted);
  font-size: 1rem;
}

.grid {
  display: grid;
  gap: 24px;
}

.card {
  position: relative;
  border-radius: var(--radius-md);
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-card);
  display: grid;
  gap: 14px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.card::after {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  border: 1px solid transparent;
  background: linear-gradient(135deg, rgba(247, 160, 70, 0.48), rgba(110, 198, 184, 0.45)) border-box;
  mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

.card:hover,
.card:focus-within {
  transform: translateY(-6px);
  box-shadow: 0 28px 48px rgba(10, 18, 32, 0.5);
}

.card:hover::after,
.card:focus-within::after {
  opacity: 1;
}

.card h3 {
  margin: 0;
  font-size: 1.35rem;
  letter-spacing: 0.01em;
}

.card p {
  margin: 0;
  color: var(--text-secondary);
  line-height: 1.6;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.pill {
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.pill strong {
  color: var(--highlight);
  font-weight: 600;
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.card-actions a {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text-primary);
  font-weight: 500;
  transition: transform var(--transition), border var(--transition), background var(--transition);
}

.card-actions a:hover,
.card-actions a:focus {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.06);
}

.muted {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.feature-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.feature-details {
  background: rgba(15, 28, 46, 0.82);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  padding: 0 0 12px;
  box-shadow: var(--shadow-soft);
}

.feature-details summary {
  list-style: none;
  cursor: pointer;
  padding: 32px 32px 24px;
  display: grid;
  gap: 6px;
  position: relative;
}

.feature-details summary::-webkit-details-marker {
  display: none;
}

.feature-details summary h2 {
  margin: 0;
  font-family: "Playfair Display", Georgia, serif;
  font-size: 1.85rem;
  letter-spacing: 0.02em;
}

.feature-details summary p {
  margin: 0;
  color: var(--text-muted);
  font-size: 1rem;
}

.summary-indicator {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  font-size: 0.95rem;
  color: var(--accent);
}

.summary-indicator::after {
  content: "▾";
  font-size: 1.1rem;
}

.feature-details[open] .summary-indicator::after {
  content: "▴";
}

.feature-details[open] .summary-indicator::before {
  content: "Hide details";
}

.feature-details:not([open]) .summary-indicator::before {
  content: "Show details";
}

.feature-details[open] .feature-grid {
  padding: 0 32px 32px;
}

.feature-details:not([open]) .feature-grid {
  display: none;
}

.feature-card {
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 26px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: grid;
  gap: 12px;
}

.feature-card span {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.09);
  color: var(--accent);
  font-size: 1.4rem;
}

.feature-card h3 {
  margin: 0;
  font-size: 1.2rem;
}

.feature-card p {
  margin: 0;
  color: var(--text-secondary);
  line-height: 1.6;
}

.callout {
  margin-top: 88px;
  padding: 48px;
  border-radius: var(--radius-lg);
  background: rgba(15, 28, 46, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.14);
  display: grid;
  gap: 18px;
  text-align: center;
  box-shadow: var(--shadow-soft);
}

.callout h2 {
  margin: 0;
  font-size: 2rem;
  font-family: "Playfair Display", Georgia, serif;
}

.callout p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  background: rgba(9, 18, 32, 0.76);
  padding: 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-card);
}

.search-field {
  position: relative;
  flex: 1 1 280px;
}

.search-field input {
  width: 100%;
  height: var(--control-height);
  padding: 0 48px 0 52px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(13, 24, 40, 0.82);
  color: var(--text-primary);
  font-size: 1rem;
}

.search-field input::placeholder {
  color: var(--text-muted);
}

.search-field svg {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  pointer-events: none;
}

.select {
  min-width: 180px;
  position: relative;
}

.select select {
  width: 100%;
  height: var(--control-height);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(13, 24, 40, 0.82);
  color: var(--text-primary);
  font-size: 1rem;
  padding: 0 18px;
  appearance: none;
}

.select::after {
  content: "⌄";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.view-toggle {
  display: inline-flex;
  padding: 6px;
  background: rgba(10, 20, 32, 0.78);
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  gap: 6px;
}

.view-toggle button {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-weight: 500;
  padding: 12px 20px;
  border-radius: 999px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.view-toggle button[aria-pressed="true"] {
  background: rgba(247, 160, 70, 0.14);
  color: var(--highlight);
}

.toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  border-radius: 999px;
  background: rgba(10, 20, 32, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.1);
  cursor: pointer;
}

.toggle input {
  position: absolute;
  opacity: 0;
  inset: 0;
  margin: 0;
  cursor: pointer;
}

.toggle-slider {
  width: 44px;
  height: 24px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
  position: relative;
  transition: background var(--transition);
}

.toggle-slider::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  transition: transform var(--transition);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.toggle input:checked + .toggle-slider {
  background: rgba(247, 160, 70, 0.45);
}

.toggle input:checked + .toggle-slider::after {
  transform: translateX(18px);
}

.toggle-label {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
}

.list-view,
.calendar-view {
  margin-top: 36px;
}

.empty-state {
  padding: 48px;
  text-align: center;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
  border: 1px dashed rgba(255, 255, 255, 0.14);
}

.calendar-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 12px;
}

.calendar-day {
  position: relative;
  min-height: 120px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(5, 15, 25, 0.8);
  padding: 12px;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 8px;
  transition: border var(--transition), transform var(--transition);
  cursor: default;
}

.calendar-day button {
  all: unset;
  cursor: pointer;
  display: contents;
}

.calendar-day span {
  font-weight: 600;
  color: var(--text-secondary);
}

.calendar-day[data-has-events="true"] {
  border-color: rgba(247, 160, 70, 0.22);
  background: rgba(247, 160, 70, 0.08);
}

.calendar-day[data-has-events="true"]:hover {
  transform: translateY(-3px);
  border-color: rgba(247, 160, 70, 0.38);
}

.day-events {
  display: grid;
  gap: 6px;
}

.day-event-pill {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(110, 198, 184, 0.12);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 600;
  max-width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.day-detail {
  margin-top: 28px;
  padding: 28px;
  border-radius: var(--radius-md);
  background: rgba(8, 18, 30, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-card);
  display: grid;
  gap: 18px;
}

.day-detail h3 {
  margin: 0;
}

.day-detail ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.day-detail li {
  display: grid;
  gap: 8px;
  padding: 16px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.day-detail li strong {
  font-size: 1.05rem;
}

.footer {
  margin-top: 120px;
  padding: 36px 24px 54px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 32px;
}

.detail-hero {
  background: var(--bg-panel);
  border-radius: var(--radius-lg);
  padding: 54px;
  box-shadow: var(--shadow-soft);
  display: grid;
  gap: 20px;
}

.detail-hero h1 {
  margin: 0;
  font-family: "Playfair Display", Georgia, serif;
  font-size: clamp(2.4rem, 6vw, 3.4rem);
}

.meta-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.meta-item {
  background: rgba(255, 255, 255, 0.07);
  padding: 18px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.meta-item span {
  display: block;
  color: var(--text-muted);
  margin-bottom: 6px;
  font-size: 0.92rem;
  letter-spacing: 0.04em;
}

.instance-switcher {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  margin-top: 12px;
}

.instance-switcher select {
  height: var(--control-height);
  padding: 0 18px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(13, 24, 40, 0.82);
  color: var(--text-primary);
}

.detail-content {
  margin-top: 36px;
  display: grid;
  gap: 24px;
}

.detail-card {
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 26px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: grid;
  gap: 12px;
}

.detail-card h2 {
  margin: 0;
  font-size: 1.6rem;
  font-family: "Playfair Display", Georgia, serif;
}

.detail-card p {
  margin: 0;
  color: var(--text-secondary);
  line-height: 1.7;
}

.detail-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 10px;
}

.detail-links a {
  display: inline-flex;
  align-items: center;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  font-weight: 500;
  transition: transform var(--transition), border var(--transition), background var(--transition);
}

.detail-links a:hover,
.detail-links a:focus {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.08);
}

.detail-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.detail-grid-item {
  background: rgba(8, 18, 30, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 20px;
}

.detail-grid-item span {
  color: var(--text-muted);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  display: block;
  margin-bottom: 6px;
}

.detail-grid-item strong {
  font-size: 1.05rem;
}

.notice {
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  border: 1px dashed rgba(255, 255, 255, 0.16);
  background: rgba(247, 160, 70, 0.12);
  color: var(--highlight);
  font-size: 0.95rem;
}

noscript {
  display: block;
  padding: 18px;
  margin-top: 20px;
  border-radius: var(--radius-sm);
  background: rgba(255, 194, 68, 0.25);
  color: #1c1204;
  font-weight: 600;
  text-align: center;
}

@media (max-width: 900px) {
  .hero {
    padding: 48px 32px;
  }

  .nav-wrapper {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-links {
    width: 100%;
    justify-content: space-between;
    gap: 16px;
  }

  main {
    padding: 52px 20px 96px;
  }

  .detail-hero {
    padding: 42px;
  }
}

@media (max-width: 640px) {
  :root {
    --control-height: 46px;
  }

  header {
    position: static;
  }

  .hero {
    padding: 40px 24px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .filters {
    padding: 20px;
  }

  .calendar-grid {
    gap: 8px;
  }

  .calendar-day {
    min-height: 104px;
  }

  .detail-hero {
    padding: 32px 24px;
  }

  .instance-switcher {
    flex-direction: column;
    align-items: stretch;
  }

  .detail-links {
    flex-direction: column;
    align-items: stretch;
  }
}