/* ============================================
   Adams Time Chart — Victorian aesthetic CSS
   ============================================ */

/* ---- Font face declarations ---- */
@font-face {
  font-family: 'EB Garamond';
  src: url('fonts/ebgaramond-regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'EB Garamond';
  src: url('fonts/ebgaramond-italic.woff2') format('woff2');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: 'EB Garamond';
  src: url('fonts/ebgaramond-bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ---- CSS Variables ---- */
:root {
  --color-dark-green: #1a3a2e;
  --color-dark-green-soft: #2a4a3e;
  --color-cream: #f4f1e8;
  --color-cream-dark: #e8e3d3;
  --color-gold: #b8922c;
  --color-gold-bright: #d4a932;
  --color-text-dark: #2c2c2c;
  --color-text-muted: #6b6b6b;
  --color-text-light: #f4f1e8;

  --font-display: 'EB Garamond', Georgia, 'Times New Roman', serif;
  --font-body: 'EB Garamond', Georgia, 'Times New Roman', serif;

  --header-height: 64px;
  --nav-height: 56px;
  --footer-height: 44px;

  --shadow-soft: 0 2px 8px rgba(26, 58, 46, 0.15);
  --shadow-strong: 0 4px 24px rgba(26, 58, 46, 0.25);
}

/* ---- Reset ---- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-text-dark);
  background-color: var(--color-cream);
  -webkit-font-smoothing: antialiased;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

input {
  font-family: inherit;
}

a {
  color: var(--color-gold);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* ============================================
   INTRO OVERLAY
   ============================================ */
.intro-overlay {
  position: fixed;
  inset: 0;
  background: var(--color-cream);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  transition: opacity 0.5s ease, visibility 0.5s;
}

.intro-overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.intro-content {
  max-width: 540px;
  text-align: center;
  background: var(--color-cream);
  padding: 2.5rem 2rem;
  border: 1px solid var(--color-cream-dark);
  border-radius: 4px;
  box-shadow: var(--shadow-strong);
}

.intro-title {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 400;
  font-variant: small-caps;
  letter-spacing: 0.05em;
  color: var(--color-dark-green);
  margin-bottom: 0.3rem;
}

.intro-subtitle {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-style: italic;
  color: var(--color-gold);
  margin-bottom: 1rem;
}

.intro-divider {
  font-family: var(--font-display);
  color: var(--color-gold);
  margin: 1.5rem 0;
  letter-spacing: 0.5em;
}

.intro-text {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--color-text-dark);
  margin-bottom: 1.2rem;
  text-align: left;
}

.intro-button {
  display: inline-block;
  margin: 1.5rem 0;
  padding: 0.85rem 2.5rem;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-variant: small-caps;
  letter-spacing: 0.1em;
  color: var(--color-cream);
  background-color: var(--color-dark-green);
  border: 1px solid var(--color-dark-green);
  border-radius: 2px;
  transition: all 0.2s;
}

.intro-button:hover {
  background-color: var(--color-gold);
  border-color: var(--color-gold);
}

.intro-footer {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  font-style: italic;
  margin-top: 1rem;
}

/* ============================================
   APP HEADER
   ============================================ */
.app-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--color-dark-green);
  border-bottom: 2px solid var(--color-gold);
  z-index: 100;
  box-shadow: var(--shadow-soft);
}

.app-header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
  gap: 1.5rem;
  max-width: 1800px;
  margin: 0 auto;
}

.app-brand {
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.app-brand-name {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-variant: small-caps;
  letter-spacing: 0.05em;
  color: var(--color-cream);
  line-height: 1;
}

.app-brand-tagline {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-style: italic;
  color: var(--color-gold);
  line-height: 1.2;
  margin-top: 2px;
}

.app-search {
  flex: 1;
  max-width: 600px;
  position: relative;
}

#search-input {
  width: 100%;
  height: 38px;
  padding: 0 2.5rem 0 1rem;
  font-size: 0.95rem;
  color: var(--color-text-dark);
  background: var(--color-cream);
  border: 1px solid var(--color-gold);
  border-radius: 2px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

#search-input:focus {
  border-color: var(--color-gold-bright);
  box-shadow: 0 0 0 2px rgba(184, 146, 44, 0.3);
}

.search-clear {
  position: absolute;
  right: 0.5rem;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  font-size: 1.5rem;
  color: var(--color-text-muted);
  display: none;
}

.search-clear.visible {
  display: block;
}

.app-cta {
  display: inline-block;
  padding: 0.5rem 1.2rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-variant: small-caps;
  letter-spacing: 0.08em;
  color: var(--color-dark-green);
  background-color: var(--color-gold);
  border-radius: 2px;
  text-decoration: none;
  flex-shrink: 0;
  transition: all 0.2s;
}

.app-cta:hover {
  background-color: var(--color-gold-bright);
  color: var(--color-dark-green);
  text-decoration: none;
}

/* ============================================
   PANEL NAVIGATION
   ============================================ */
.panel-nav {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--color-cream-dark);
  border-bottom: 1px solid var(--color-gold);
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
  gap: 0.4rem;
  z-index: 90;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.panel-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 64px;
  height: 42px;
  padding: 0.3rem 0.6rem;
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--color-dark-green);
  background: var(--color-cream);
  border: 1px solid var(--color-gold);
  border-radius: 2px;
  white-space: nowrap;
  transition: all 0.15s;
  flex-shrink: 0;
}

.panel-btn:hover {
  background: var(--color-gold);
  color: var(--color-cream);
}

.panel-btn.active {
  background: var(--color-dark-green);
  color: var(--color-cream);
  border-color: var(--color-dark-green);
}

.panel-btn-full {
  font-variant: small-caps;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.panel-num {
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1;
}

.panel-label {
  font-size: 0.7rem;
  font-style: italic;
  margin-top: 1px;
  line-height: 1;
}

/* ============================================
   VIEWER CONTAINER
   ============================================ */
.viewer-container {
  position: fixed;
  top: calc(var(--header-height) + var(--nav-height));
  left: 0;
  right: 0;
  bottom: var(--footer-height);
  background: var(--color-cream);
  overflow: hidden;
}

#osd-viewer {
  width: 100%;
  height: 100%;
  background: #2a2a2a;
}

.openseadragon-canvas {
  outline: none;
}

/* ---- Loading indicator ---- */
.loading-indicator {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--color-cream);
  z-index: 50;
  transition: opacity 0.5s;
}

.loading-indicator.hidden {
  opacity: 0;
  pointer-events: none;
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--color-cream-dark);
  border-top-color: var(--color-gold);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 1rem;
}

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

.loading-indicator p {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--color-text-muted);
}

/* ============================================
   SEARCH RESULTS PANEL
   ============================================ */
.search-results {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 380px;
  max-width: 90vw;
  background: var(--color-cream);
  border-left: 1px solid var(--color-gold);
  box-shadow: -4px 0 16px rgba(0, 0, 0, 0.15);
  z-index: 60;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.3s ease-out;
}

.search-results.visible {
  transform: translateX(0);
}

.search-results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.2rem;
  background: var(--color-dark-green);
  color: var(--color-cream);
  border-bottom: 1px solid var(--color-gold);
}

#search-count {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-style: italic;
}

#search-close {
  font-size: 1.6rem;
  color: var(--color-cream);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.search-results-list {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.result-item {
  padding: 0.85rem 1.2rem;
  border-bottom: 1px solid var(--color-cream-dark);
  cursor: pointer;
  transition: background 0.15s;
}

.result-item:hover {
  background: var(--color-cream-dark);
}

.result-item-text {
  font-size: 1rem;
  color: var(--color-text-dark);
  margin-bottom: 0.25rem;
  line-height: 1.4;
}

.result-item-meta {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-style: italic;
}

.result-item-meta .result-type {
  display: inline-block;
  padding: 1px 6px;
  margin-right: 0.5rem;
  background: var(--color-gold);
  color: var(--color-dark-green);
  border-radius: 2px;
  font-style: normal;
  font-size: 0.7rem;
  font-variant: small-caps;
  letter-spacing: 0.05em;
}

.result-empty {
  padding: 2rem 1.2rem;
  text-align: center;
  color: var(--color-text-muted);
  font-style: italic;
}

/* ============================================
   ENTRY TOOLTIP
   ============================================ */
.entry-tooltip {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  max-width: 90%;
  background: var(--color-dark-green);
  color: var(--color-cream);
  padding: 0.85rem 1.2rem;
  border: 1px solid var(--color-gold);
  border-radius: 2px;
  box-shadow: var(--shadow-strong);
  z-index: 70;
}

.tooltip-type {
  display: inline-block;
  padding: 1px 6px;
  background: var(--color-gold);
  color: var(--color-dark-green);
  font-size: 0.7rem;
  font-variant: small-caps;
  letter-spacing: 0.05em;
  margin-bottom: 0.4rem;
}

.tooltip-text {
  font-size: 1.1rem;
  font-weight: 400;
  line-height: 1.3;
  margin-bottom: 0.3rem;
}

.tooltip-meta {
  font-size: 0.85rem;
  color: var(--color-gold);
  font-style: italic;
}

/* ============================================
   FOOTER
   ============================================ */
.app-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--footer-height);
  background: var(--color-dark-green);
  border-top: 2px solid var(--color-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 1.5rem;
  z-index: 80;
}

.footer-inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  max-width: 1800px;
  width: 100%;
  justify-content: space-between;
}

.footer-credit {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--color-cream);
  font-style: italic;
}

.footer-credit a {
  color: var(--color-gold);
  font-style: normal;
}

.footer-source {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-style: italic;
}

/* ============================================
   RESPONSIVE — TABLET
   ============================================ */
@media (max-width: 1024px) {
  .app-brand-tagline {
    display: none;
  }

  .panel-btn {
    min-width: 50px;
    padding: 0.3rem 0.4rem;
  }

  .panel-label {
    display: none;
  }
}

/* ============================================
   RESPONSIVE — MOBILE
   ============================================ */
@media (max-width: 640px) {
  :root {
    --header-height: 56px;
    --nav-height: 48px;
    --footer-height: 36px;
  }

  .app-header-inner {
    padding: 0 0.75rem;
    gap: 0.75rem;
  }

  .app-brand-name {
    font-size: 1.1rem;
  }

  #search-input {
    height: 34px;
    font-size: 0.85rem;
    padding: 0 2rem 0 0.75rem;
  }

  #search-input::placeholder {
    font-size: 0.75rem;
  }

  .app-cta {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
  }

  .panel-nav {
    padding: 0 0.75rem;
    gap: 0.3rem;
  }

  .panel-btn {
    min-width: 42px;
    height: 36px;
    font-size: 0.75rem;
  }

  .panel-num {
    font-size: 0.85rem;
  }

  .footer-source {
    display: none;
  }

  .footer-credit {
    font-size: 0.75rem;
    text-align: center;
    width: 100%;
  }

  .intro-content {
    padding: 1.5rem 1rem;
  }

  .intro-title {
    font-size: 1.8rem;
  }

  .intro-text {
    font-size: 0.95rem;
  }

  .search-results {
    width: 100%;
  }
}