/* ==========================================================================
   Two Meridian — "Field Atlas" Layout Styles
   Top Navigation, 25/75 Sidebar/Map Split, Hairline Dividers
   ========================================================================== */

/* ---- App Container ---- */
.app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
  background-color: var(--ink-950);
}

/* ---- Top Navigation ---- */
.top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
  padding: 0 var(--space-lg);
  background: var(--ink-900);
  border-bottom: 1px solid var(--hairline);
  z-index: var(--z-nav);
  flex-shrink: 0;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  user-select: none;
}

.brand-icon {
  color: var(--brass-500);
  display: flex;
  align-items: center;
}

.brand-name {
  color: var(--paper);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  transition: left 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

/* On World map page, center nav-links relative to the map area beside the 320px sidebar */
#app[data-page="world"] .nav-links,
#app:not([data-page]) .nav-links {
  left: calc(50% + 160px);
}

@media (max-width: 900px) {
  .nav-links,
  #app[data-page="world"] .nav-links,
  #app:not([data-page]) .nav-links {
    position: static;
    transform: none;
  }
}

.nav-link {
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--paper-muted);
  transition: color var(--transition-fast), background var(--transition-fast);
  position: relative;
  cursor: pointer;
}

.nav-link:hover {
  color: var(--paper);
  background: var(--ink-800);
}

.nav-link.active {
  color: var(--paper);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--brass-500);
  border-radius: var(--radius-full);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav-icon-btn {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--paper-faint);
  transition: color var(--transition-fast), background var(--transition-fast);
  cursor: pointer;
}

.nav-icon-btn:hover {
  color: var(--paper);
  background: var(--ink-800);
}

.nav-donate {
  color: var(--brass-500);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
}

.nav-donate:hover {
  background: rgba(197, 155, 39, 0.1);
  color: var(--brass-500);
}

.auth-btn {
  color: var(--paper);
  background: var(--ink-800);
  border: 1px solid var(--hairline-light);
}

.auth-btn:hover {
  background: var(--ink-700);
}

.auth-user-menu {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.auth-alias {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--brass-500);
  padding: 4px 10px;
  background: rgba(197, 155, 39, 0.1);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(197, 155, 39, 0.2);
}

/* ---- Page Container ---- */
.page {
  display: none;
  flex: 1;
  overflow: hidden;
}

.page.active {
  display: flex;
}

/* ---- Game Layout (Sidebar + Map) ---- */
.game-layout {
  display: flex;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

/* ---- Sidebar ---- */
.sidebar {
  width: 320px;
  min-width: 320px;
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--ink-900);
  border-right: 1px solid var(--hairline);
  z-index: var(--z-sidebar);
  overflow-y: auto;
  flex-shrink: 0;
}

/* ---- Map Container & Viewport ---- */
.map-container,
.map-view {
  flex: 1;
  height: calc(100% - 20px);
  margin: 10px 14px 10px 10px;
  position: relative;
  overflow: hidden;
  background-color: var(--ink-950);
  border: 2px solid var(--brass-500);
  border-radius: 4px;
  box-shadow: var(--map-frame-shadow);
  display: flex;
  align-items: center;
  justify-content: center;
}

.map-wrapper {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  touch-action: none;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px;
}

.map-wrapper svg {
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  display: block;
}