*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #080c14;
  --bg2: #0d1521;
  --surface: #111a2a;
  --border: #1e2d3a;
  --text: #e2e8f0;
  --text-muted: #64748b;
  --accent: #3b82f6;
  --easy: #22d3a0;
  --moderate: #f59e0b;
  --hard: #f43f5e;
  --topbar-h: 64px;
  --bottombar-h: 44px;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

/* ── STEP 1: Country Selection ── */
#step1 {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 40px;
  z-index: 100;
  background: var(--bg);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

#step1.fade-out {
  opacity: 0;
  transform: translateY(-20px);
  pointer-events: none;
}

#step1 canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.step1-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
}

.logo {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text);
}

.logo span { color: var(--accent); }

.headline {
  text-align: center;
}

.headline h1 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.headline p {
  font-size: 16px;
  color: var(--text-muted);
}

.country-cards {
  display: flex;
  gap: 20px;
}

.country-card {
  width: 180px;
  padding: 28px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  cursor: pointer;
  text-align: center;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.country-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(59, 130, 246, 0.2);
}

.country-card .flag { font-size: 44px; }
.country-card .cname { font-size: 16px; font-weight: 600; color: var(--text); }
.country-card .rank { font-size: 12px; color: var(--text-muted); }

/* ── STEP 2: Map View ── */
#step2 {
  display: none;
  flex-direction: column;
  height: 100vh;
  opacity: 0;
  transition: opacity 0.4s ease;
}

#step2.visible {
  display: flex;
  opacity: 1;
}

/* TopBar */
#topbar {
  height: var(--topbar-h);
  background: rgba(8, 12, 20, 0.95);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 16px;
  flex-shrink: 0;
  backdrop-filter: blur(8px);
  z-index: 10;
}

.topbar-logo {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
}

.topbar-logo span { color: var(--accent); }

.topbar-sep {
  width: 1px;
  height: 28px;
  background: var(--border);
}

.from-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
  white-space: nowrap;
}

.from-badge strong { color: var(--text); }

.arrow-icon { color: var(--accent); font-size: 16px; }

.purpose-tabs {
  display: flex;
  gap: 6px;
  flex: 1;
}

.purpose-tab {
  padding: 6px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 13px;
  font-family: inherit;
  transition: all 0.15s;
  white-space: nowrap;
}

.purpose-tab:hover { border-color: var(--accent); color: var(--text); }

.purpose-tab.active {
  border-color: var(--accent);
  background: rgba(59, 130, 246, 0.15);
  color: var(--text);
}

.change-btn {
  padding: 6px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 12px;
  font-family: inherit;
  transition: all 0.15s;
  white-space: nowrap;
  margin-left: auto;
}

.change-btn:hover { border-color: var(--text-muted); color: var(--text); }

/* Map area = map + rank panel side by side */
#map-area {
  flex: 1;
  display: flex;
  overflow: hidden;
}

/* Map */
#map-container {
  flex: 1;
  position: relative;
  overflow: hidden;
  background: #060a10;
}

#map-container svg {
  width: 100%;
  height: 100%;
  display: block;
}

.country-path {
  transition: fill 0.3s ease, stroke 0.2s ease;
  cursor: default;
}

.country-supported {
  cursor: pointer;
  filter: drop-shadow(0 0 4px currentColor);
  transition: filter 0.2s, fill 0.2s, stroke 0.2s;
}

.country-supported:hover {
  filter: drop-shadow(0 0 10px currentColor) brightness(1.3);
}

/* BottomBar */
#bottombar {
  height: var(--bottombar-h);
  background: rgba(8, 12, 20, 0.92);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 20px;
  flex-shrink: 0;
  backdrop-filter: blur(8px);
}

.legend {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 1;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-muted);
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.legend-count {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ── Tooltip ── */
#tooltip {
  position: fixed;
  z-index: 1000;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.12s ease;
  min-width: 260px;
  max-width: 300px;
}

#tooltip.visible { opacity: 1; }
#tooltip.hiding { opacity: 0; transition: opacity 0.1s ease; }

.tooltip-inner {
  background: #0d1521;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}

.tooltip-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.tooltip-country {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.diff-badge {
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}

.diff-badge.easy     { background: #d1fae5; color: #065f46; }
.diff-badge.moderate { background: #fef3c7; color: #92400e; }
.diff-badge.hard     { background: #fee2e2; color: #991b1b; }

.tooltip-divider {
  height: 1px;
  background: var(--border);
  margin: 8px 0;
}

.tooltip-rows { display: flex; flex-direction: column; gap: 4px; }

.tooltip-row {
  display: flex;
  gap: 8px;
  font-size: 12px;
}

.tooltip-row .label { color: var(--text-muted); width: 90px; flex-shrink: 0; }
.tooltip-row .val   { color: var(--text); }

.tooltip-cta {
  display: block;
  width: 100%;
  margin-top: 12px;
  padding: 8px;
  background: rgba(59, 130, 246, 0.15);
  border: 1px solid rgba(59, 130, 246, 0.4);
  border-radius: 8px;
  color: var(--accent);
  text-align: center;
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  pointer-events: auto;
  transition: background 0.15s;
}

.tooltip-cta:hover { background: rgba(59, 130, 246, 0.25); }

/* ── Loading spinner ── */
#map-loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--text-muted);
  font-size: 13px;
}

.spinner {
  width: 28px;
  height: 28px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ── Ranking Panel ── */
#rank-panel {
  width: 256px;
  flex-shrink: 0;
  background: rgba(8, 12, 20, 0.97);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: width 0.25s ease;
}

#rank-panel.collapsed {
  width: 36px;
}

#rank-panel.collapsed .rank-sort-row,
#rank-panel.collapsed #rank-list,
#rank-panel.collapsed .rank-panel-title {
  display: none;
}

.rank-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.rank-panel-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
}

.rank-toggle {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  cursor: pointer;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  padding: 0;
  transition: color 0.15s, border-color 0.15s;
  flex-shrink: 0;
}

.rank-toggle:hover { color: var(--text); border-color: var(--text-muted); }

#rank-panel.collapsed .rank-toggle { transform: rotate(180deg); }

.rank-sort-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.rank-sort-label { font-size: 11px; color: var(--text-muted); white-space: nowrap; }

#rank-sort-select {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 12px;
  font-family: inherit;
  padding: 3px 6px;
  outline: none;
  cursor: pointer;
}

#rank-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0;
}

#rank-list::-webkit-scrollbar { width: 4px; }
#rank-list::-webkit-scrollbar-track { background: transparent; }
#rank-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.rank-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  cursor: pointer;
  transition: background 0.15s;
  border-bottom: 1px solid rgba(30, 45, 58, 0.5);
}

.rank-item:hover { background: rgba(59, 130, 246, 0.07); }

.rank-medal {
  font-size: 16px;
  width: 24px;
  text-align: center;
  flex-shrink: 0;
  color: var(--text-muted);
  font-weight: 700;
}

.rank-info { flex: 1; min-width: 0; }

.rank-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.rank-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 3px;
  flex-wrap: wrap;
}

.rank-diff {
  font-size: 10px;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 10px;
}

.rank-diff-easy     { background: #d1fae5; color: #065f46; }
.rank-diff-moderate { background: #fef3c7; color: #92400e; }
.rank-diff-hard     { background: #fee2e2; color: #991b1b; }

.rank-cost {
  font-size: 11px;
  color: var(--text-muted);
}

/* ── Responsive ── */
/* ── Language Switcher ── */
.lang-sw { position: relative; }

.lang-trigger {
  display: flex;
  align-items: center;
  gap: 4px;
  background: rgba(13, 21, 33, 0.85);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
  padding: 5px 10px;
  border-radius: 20px;
  cursor: pointer;
  white-space: nowrap;
  transition: border-color 0.2s;
}
.lang-trigger:hover { border-color: var(--accent); }

.lang-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  background: #0d1521;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  display: none;
  min-width: 110px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  z-index: 9999;
}
.lang-menu.open { display: block; }

.lang-opt {
  display: block;
  width: 100%;
  padding: 9px 16px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 13px;
  text-align: left;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.lang-opt:hover { background: #111a2a; color: var(--text); }
.lang-opt.active { color: var(--accent); font-weight: 600; }

/* Article nav lang switcher */
.art-nav .lang-sw { margin-left: auto; }
.art-nav .lang-menu { right: 0; }

/* step1: absolute bottom-right of the fixed step1 overlay */
#lang-sw-s1 {
  position: absolute;
  bottom: 20px;
  right: 20px;
  z-index: 2;
}

/* step1 menu opens upward */
.lang-menu-up {
  top: auto;
  bottom: calc(100% + 6px);
}

/* topbar: push to far right */
#lang-sw-s2 { margin-left: auto; }

@media (max-width: 768px) {
  #rank-panel { width: 200px; }
  /* on mobile step2, float lang switcher to bottom-right like step1 */
  #lang-sw-s2 {
    margin-left: 0;
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
  }
  #lang-sw-s2 .lang-menu { bottom: calc(100% + 6px); top: auto; }
}

@media (max-width: 600px) {
  #topbar { padding: 0 12px; gap: 8px; }
  .topbar-logo { font-size: 14px; }
  .purpose-tab { padding: 5px 10px; font-size: 12px; }
  .country-cards { flex-direction: column; }
  .headline h1 { font-size: 24px; }
  .legend { gap: 10px; }
  #rank-panel { display: none; }
}