/* ============================================================
   Map of Calcutta — Vintage Stylesheet
   Red Dead Redemption–inspired hand-drawn map aesthetic
   ============================================================ */

/* --- Custom Font --- */
@font-face {
  font-family: 'Antiquarian Scribe';
  src: url('../fonts/antiquarian-scribe.otf') format('opentype');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

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

:root {
  --parchment:      #f0deb4;
  --parchment-dark: #d4c088;
  --parchment-edge: #c4a86a;
  --ink-dark:       #2c1810;
  --ink-brown:      #5c3a21;
  --ink-medium:     #7a5a3a;
  --ink-light:      #8B6914;
  --ink-gold:       #a07828;
  --red-accent:     #8b2500;
  --water-blue:     #7a9ab0;
  --green-muted:    #5a6a3a;
  --marker-glow:    rgba(139, 105, 20, 0.25);
}

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

body {
  font-family: 'IM Fell English', 'Georgia', serif;
  color: var(--ink-dark);
  min-height: 100vh;
  overflow-x: hidden;

  /* Multi-layered parchment background */
  background-color: var(--parchment);
  background-image:
    /* Subtle grain */
    url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.06'/%3E%3C/svg%3E"),
    /* Aged paper gradient */
    radial-gradient(ellipse at 25% 20%, #f5e6c8 0%, transparent 60%),
    radial-gradient(ellipse at 75% 80%, #e8d5a3 0%, transparent 60%),
    radial-gradient(ellipse at 50% 50%, var(--parchment) 0%, var(--parchment-dark) 100%);
}

/* --- Accessibility: Focus styles --- */
:focus-visible {
  outline: 2px solid var(--ink-brown);
  outline-offset: 2px;
}

/* --- Decorative Page Border --- */
.page-border {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  pointer-events: none;
  z-index: 100;
  border: 8px solid transparent;
  border-image: repeating-linear-gradient(
    45deg,
    var(--ink-brown) 0px,
    var(--ink-brown) 2px,
    transparent 2px,
    transparent 6px
  ) 8;
  opacity: 0.25;
}

.page-border::before {
  content: '';
  position: absolute;
  top: 6px; left: 6px; right: 6px; bottom: 6px;
  border: 1.5px solid var(--ink-brown);
  opacity: 0.3;
}

/* --- Header / Cartouche --- */
.cartouche {
  text-align: center;
  padding: 2.5rem 1rem 1rem;
  position: relative;
}

.main-title {
  font-family: 'Antiquarian Scribe', 'Playfair Display', cursive, serif;
  font-size: 4.5rem;
  font-weight: 400;
  color: var(--ink-dark);
  letter-spacing: 4px;
  line-height: 1.1;
  text-shadow: 2px 2px 0 rgba(244, 230, 200, 0.8);
}

.era-year {
  font-family: 'Cinzel', serif;
  font-size: 0.95rem;
  color: var(--ink-medium);
  letter-spacing: 4px;
  margin-top: 0.5rem;
}

/* --- Timeline Navigation --- */
.timeline {
  padding: 1.5rem 2rem;
  display: flex;
  justify-content: center;
}

.timeline-track {
  display: flex;
  align-items: center;
  gap: 0;
  position: relative;
  padding: 0 1rem;
}

.timeline-line {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--ink-brown) 5%,
    var(--ink-brown) 95%,
    transparent 100%
  );
  opacity: 0.3;
  transform: translateY(-50%);
}

.timeline-btn {
  position: relative;
  z-index: 1;
  background: var(--parchment);
  border: 2px solid var(--ink-brown);
  color: var(--ink-brown);
  font-family: 'Cinzel', serif;
  font-size: 0.8rem;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
  transition: all 0.3s ease;
  letter-spacing: 1px;
  margin: 0 2px;
  white-space: nowrap;
}

.timeline-btn:hover {
  background: var(--ink-brown);
  color: var(--parchment);
  transform: translateY(-2px);
  box-shadow: 0 3px 8px rgba(44, 24, 16, 0.2);
}

.timeline-btn.active {
  background: var(--ink-dark);
  color: var(--parchment);
  border-color: var(--ink-dark);
  box-shadow: 0 2px 10px rgba(44, 24, 16, 0.3);
}

/* --- Era Description --- */
.era-description {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 2rem 1.5rem;
  text-align: center;
}

.era-description p {
  font-family: 'IM Fell DW Pica', 'IM Fell English', serif;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--ink-brown);
  font-style: italic;
  transition: opacity 0.5s ease;
}

/* --- Map Container --- */
.map-container {
  max-width: 900px;
  margin: 0 auto 2rem;
  padding: 0 1rem;
  position: relative;
}

#main-map {
  width: 100%;
  height: auto;
  border: 2px solid var(--ink-brown);
  border-radius: 2px;
  background: var(--parchment);
  box-shadow:
    0 4px 20px rgba(44, 24, 16, 0.15),
    inset 0 0 60px rgba(139, 105, 20, 0.08);
  cursor: grab;
  user-select: none;
  touch-action: none;
}

#main-map.grabbing {
  cursor: grabbing;
}

/* --- Zoom Controls --- */
.zoom-controls {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 20;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.zoom-btn {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, rgba(240, 222, 180, 0.95), rgba(212, 192, 136, 0.95));
  border: 1.5px solid var(--ink-brown);
  color: var(--ink-dark);
  font-family: 'Cinzel', serif;
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  box-shadow: 0 1px 4px rgba(44, 24, 16, 0.15);
}

.zoom-btn:hover {
  background: var(--ink-brown);
  color: var(--parchment);
}

.zoom-btn-reset {
  font-size: 1rem;
  margin-top: 2px;
}

/* --- Export Button --- */
.export-btn {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, rgba(240, 222, 180, 0.95), rgba(212, 192, 136, 0.95));
  border: 1.5px solid var(--ink-brown);
  color: var(--ink-dark);
  font-size: 0.85rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  box-shadow: 0 1px 4px rgba(44, 24, 16, 0.15);
  margin-top: 8px;
}

.export-btn:hover {
  background: var(--ink-brown);
  color: var(--parchment);
}

.export-btn.exporting {
  pointer-events: none;
  opacity: 0.6;
}

.export-btn .export-icon {
  font-size: 1rem;
}

/* --- SVG Map Styling --- */

/* Street Grid & Settlement Blocks */
.street-line {
  fill: none;
  stroke: var(--ink-medium);
  stroke-width: 0.6;
  opacity: 0.22;
  stroke-linecap: round;
}

.settlement-block {
  fill: var(--ink-medium);
  stroke: var(--ink-brown);
  stroke-width: 0.3;
  opacity: 0.1;
  rx: 0.5;
  ry: 0.5;
}

.street-zone {
  transition: opacity 0.5s ease;
}

/* Roads */
.road-path {
  fill: none;
  stroke: var(--ink-medium);
  stroke-width: 1.2;
  stroke-dasharray: 8, 4;
  opacity: 0.35;
}

.road-label {
  font-family: 'IM Fell English', serif;
  font-size: 8px;
  fill: var(--ink-medium);
  opacity: 0.5;
  font-style: italic;
}

/* Area Labels */
.area-label-large {
  font-family: 'Cinzel', serif;
  font-size: 18px;
  fill: var(--ink-medium);
  letter-spacing: 8px;
  opacity: 0.2;
  text-transform: uppercase;
}

.area-label-medium {
  font-family: 'Playfair Display', serif;
  font-size: 13px;
  fill: var(--green-muted);
  letter-spacing: 4px;
  opacity: 0.25;
  font-style: italic;
}

.area-label-river {
  font-family: 'IM Fell English', serif;
  font-size: 14px;
  fill: var(--water-blue);
  letter-spacing: 6px;
  opacity: 0.4;
  font-style: italic;
}

/* Place Markers */
.place-marker {
  cursor: pointer;
  transition: transform 0.2s ease, opacity 0.3s ease;
  opacity: 0;
  animation: markerAppear 0.6s ease forwards;
}

.place-marker:hover {
  transform: scale(1.15);
}

.place-marker:hover .marker-label {
  opacity: 1;
}

.place-marker:hover .marker-icon {
  filter: drop-shadow(0 0 4px var(--marker-glow));
}

@keyframes markerAppear {
  0% { opacity: 0; transform: scale(0.5); }
  60% { opacity: 1; transform: scale(1.05); }
  100% { opacity: 1; transform: scale(1); }
}

.marker-icon {
  color: var(--ink-dark);
  transition: filter 0.2s ease;
}

.marker-dot {
  fill: var(--red-accent);
  stroke: var(--ink-dark);
  stroke-width: 1;
  opacity: 0.8;
}

.marker-label {
  font-family: 'IM Fell English', serif;
  font-size: 9px;
  fill: var(--ink-dark);
  opacity: 0.85;
  transition: opacity 0.2s ease;
  pointer-events: none;
  text-shadow: 1px 1px 0 var(--parchment), -1px -1px 0 var(--parchment),
               1px -1px 0 var(--parchment), -1px 1px 0 var(--parchment);
}

/* Marker pulse on hover */
.marker-pulse {
  fill: none;
  stroke: var(--red-accent);
  stroke-width: 1;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.place-marker:hover .marker-pulse {
  opacity: 0.4;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0% { r: 8; opacity: 0.4; }
  100% { r: 18; opacity: 0; }
}

/* --- Popup / Modal --- */
.popup-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(44, 24, 16, 0.6);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  animation: fadeIn 0.3s ease;
}

.popup-overlay.visible {
  display: flex;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.popup {
  background: var(--parchment);
  border: 3px solid var(--ink-brown);
  max-width: 560px;
  width: 100%;
  max-height: 85vh;
  position: relative;
  box-shadow:
    0 8px 40px rgba(44, 24, 16, 0.4),
    inset 0 0 30px rgba(139, 105, 20, 0.06);
  animation: popupSlide 0.4s ease;
  display: flex;
  flex-direction: column;
}

@keyframes popupSlide {
  from { opacity: 0; transform: translateY(20px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.popup::before {
  content: '';
  position: absolute;
  top: 4px; left: 4px; right: 4px; bottom: 4px;
  border: 1px solid var(--ink-brown);
  opacity: 0.3;
  pointer-events: none;
}

.popup-close {
  position: absolute;
  top: 8px;
  right: 12px;
  background: none;
  border: none;
  font-size: 2rem;
  color: var(--ink-brown);
  cursor: pointer;
  z-index: 10;
  line-height: 1;
  transition: color 0.2s;
  font-family: serif;
}

.popup-close:hover {
  color: var(--red-accent);
}

.popup-scroll {
  overflow-y: auto;
  padding: 1.5rem 2rem 1rem;
}

.popup-image-container {
  text-align: center;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(92, 58, 33, 0.2);
}

.popup-image-container.hidden {
  display: none;
}

#popup-image {
  max-width: 100%;
  max-height: 280px;
  object-fit: contain;
  border: 2px solid var(--ink-brown);
  box-shadow: 0 2px 8px rgba(44, 24, 16, 0.2);
}

.popup-image-caption {
  font-family: 'IM Fell English', serif;
  font-size: 0.8rem;
  font-style: italic;
  color: var(--ink-medium);
  margin-top: 0.5rem;
}

.popup-title {
  font-family: 'Cinzel', serif;
  font-size: 1.4rem;
  color: var(--ink-dark);
  margin-bottom: 0.75rem;
  letter-spacing: 1px;
  padding-right: 1.5rem;
}

.popup-description {
  font-family: 'IM Fell DW Pica', 'IM Fell English', serif;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--ink-brown);
  margin-bottom: 1rem;
}

.popup-attribution {
  padding-top: 0.75rem;
  border-top: 1px solid rgba(92, 58, 33, 0.2);
  font-size: 0.8rem;
}

.attribution-label {
  font-family: 'Cinzel', serif;
  font-size: 0.7rem;
  color: var(--ink-medium);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.popup-attribution a {
  color: var(--red-accent);
  text-decoration: none;
  font-family: 'IM Fell English', serif;
  transition: color 0.2s;
}

.popup-attribution a:hover {
  color: var(--ink-dark);
  text-decoration: underline;
}

.popup-image-source-container.hidden {
  display: none;
}

.popup-ornament {
  height: 3px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--ink-brown) 15%,
    var(--ink-brown) 85%,
    transparent 100%
  );
  opacity: 0.4;
  flex-shrink: 0;
}

/* --- Toast Notifications (vintage-styled) --- */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.toast {
  font-family: 'IM Fell English', serif;
  font-size: 0.9rem;
  color: var(--ink-dark);
  background: linear-gradient(135deg, rgba(240, 222, 180, 0.98), rgba(212, 192, 136, 0.98));
  border: 1.5px solid var(--ink-brown);
  padding: 0.75rem 1.25rem;
  box-shadow: 0 4px 16px rgba(44, 24, 16, 0.25);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.4s ease, transform 0.4s ease;
  pointer-events: auto;
  max-width: 340px;
}

.toast.visible {
  opacity: 1;
  transform: translateY(0);
}

.toast.toast-error {
  border-color: var(--red-accent);
}

/* --- Legend --- */
.legend {
  position: fixed;
  bottom: 1.5rem;
  left: 1.5rem;
  background: linear-gradient(135deg, rgba(240, 222, 180, 0.95), rgba(212, 192, 136, 0.95));
  border: 1.5px solid var(--ink-brown);
  padding: 0.6rem 0.8rem;
  z-index: 50;
  box-shadow: 0 2px 10px rgba(44, 24, 16, 0.15);
  max-width: 320px;
  max-height: calc(100vh - 3rem);
  overflow-y: auto;
}

.legend-title {
  font-family: 'Cinzel', serif;
  font-size: 0.7rem;
  color: var(--ink-dark);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid rgba(92, 58, 33, 0.3);
}

.legend-items {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.25rem 0.5rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.legend-item svg {
  color: var(--ink-dark);
  flex-shrink: 0;
}

.legend-item .legend-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.legend-item span {
  font-family: 'IM Fell English', serif;
  font-size: 0.65rem;
  color: var(--ink-brown);
  white-space: nowrap;
}

/* --- Footer --- */
.site-footer {
  text-align: center;
  padding: 2rem 1rem 2.5rem;
  margin-top: 1rem;
}

.footer-ornament {
  width: 200px;
  height: 1px;
  margin: 0 auto 1rem;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--ink-brown) 30%,
    var(--ink-brown) 70%,
    transparent 100%
  );
  opacity: 0.3;
}

.footer-credit {
  font-family: 'IM Fell English', serif;
  font-size: 0.85rem;
  color: var(--ink-medium);
  margin-bottom: 0.3rem;
}

.footer-credit strong {
  color: var(--ink-brown);
  font-family: 'Cinzel', serif;
  font-size: 0.8rem;
  letter-spacing: 1px;
}

.footer-links {
  font-family: 'IM Fell English', serif;
  font-size: 0.8rem;
}

.footer-links a {
  color: var(--red-accent);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--ink-dark);
  text-decoration: underline;
}

.footer-separator {
  color: var(--ink-medium);
  margin: 0 0.5rem;
}

/* --- Loading state --- */
.map-loading {
  text-align: center;
  padding: 4rem;
  font-family: 'IM Fell English', serif;
  font-style: italic;
  color: var(--ink-medium);
  font-size: 1.1rem;
}

.map-loading.error {
  color: var(--red-accent);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .main-title {
    font-size: 2.8rem;
    letter-spacing: 2px;
  }

  .timeline {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    justify-content: flex-start;
    padding: 1.5rem 1rem;
  }

  .timeline-track {
    flex-wrap: nowrap;
    justify-content: flex-start;
    gap: 4px;
    min-width: max-content;
  }

  .timeline-btn {
    font-size: 0.7rem;
    padding: 0.3rem 0.5rem;
  }

  .timeline-line {
    display: none;
  }

  .legend {
    position: relative;
    bottom: auto;
    left: auto;
    max-width: 100%;
    max-height: none;
    margin: 1rem;
  }

  .legend-items {
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
  }

  .popup {
    max-height: 90vh;
  }

  .popup-scroll {
    padding: 1rem 1.25rem;
  }

  .popup-title {
    font-size: 1.2rem;
  }

  .era-description p {
    font-size: 0.9rem;
  }

  .toast-container {
    right: 1rem;
    bottom: 1rem;
    left: 1rem;
  }

  .toast {
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  .main-title {
    font-size: 2rem;
    letter-spacing: 1px;
  }

  .timeline-btn {
    font-size: 0.65rem;
    padding: 0.25rem 0.4rem;
  }

  .popup-overlay {
    padding: 1rem;
  }
}

/* --- Print --- */
@media print {
  .page-border,
  .timeline,
  .legend,
  .popup-overlay,
  .toast-container,
  .zoom-controls {
    display: none;
  }

  body {
    background: white;
  }
}