/* ============================================================
   VARIABLES
   ============================================================ */
:root {
  /* Backgrounds */
  --bg-base:    #010409;
  --bg-surface: #0d1117;
  --bg-raised:  #161b22;
  --bg-overlay: #21262d;

  /* Borders */
  --border:        #30363d;
  --border-subtle: #21262d;

  /* Text */
  --text-primary:   #e6edf3;
  --text-secondary: #8b949e;
  --text-muted:     #484f58;

  /* Accents */
  --green:     #3fb950;
  --green-dim: #091a0f;
  --blue:      #58a6ff;
  --blue-dim:  #0f2040;
  --red:       #f85149;

  /* Layout */
  --header-h:   56px;
  --detail-w:   280px;
  --comp-bar-h: 76px;

  /* Transitions */
  --t-fast:   0.15s;
  --t-normal: 0.2s;
  --ease:     ease;
}

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

html,
body {
  height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-base);
  color: var(--text-primary);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================================
   HEADER
   ============================================================ */
.app-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  background: linear-gradient(to bottom, #0d1117f0 0%, #0d111700 100%);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  width: 28px;
  height: 28px;
  background: #1f3a5f;
  border: 1px solid #2d4a6e;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
}

.logo-text {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--text-primary);
  line-height: 1.2;
}

.logo-sub {
  font-size: 10px;
  color: var(--text-secondary);
  margin-top: 1px;
  line-height: 1;
}

/* Known counter pill */
.known-counter {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 6px 14px;
  font-size: 11px;
}

.known-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 6px rgba(63, 185, 80, 0.4);
  flex-shrink: 0;
}

.known-label {
  color: var(--text-secondary);
}

.known-num {
  color: var(--green);
  font-weight: 700;
  font-size: 13px;
  display: inline-block;
  transition: transform var(--t-fast) var(--ease);
}

.known-num.bump {
  transform: scale(1.3);
}

/* Known reset button — inside the pill, visible only when count > 0 */
.known-reset {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  padding: 0 2px;
  font-family: inherit;
  flex-shrink: 0;
  transition: color var(--t-fast) var(--ease);
}

.known-reset:hover {
  color: var(--red);
}

/* ============================================================
   MAP AREA — full viewport hero
   ============================================================ */
.map-area {
  position: fixed;
  inset: 0;
  background: var(--bg-base);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.map-container {
  width: 100%;
  height: 100%;
  cursor: grab;
}

.map-container:active {
  cursor: grabbing;
}

/* SVG paths injected in Commit 2 */
.map-container svg {
  width: 100%;
  height: 100%;
  display: block;
}

.map-container path[data-code] {
  fill: #0d1117;
  stroke: #1a2332;
  stroke-width: 0.5;
  transition:
    fill var(--t-fast) var(--ease),
    stroke var(--t-fast) var(--ease);
  cursor: pointer;
}

.map-container path[data-code]:hover {
  fill: #111e35;
  stroke: #2d4a6e;
}

.map-container path[data-code].selected {
  fill: var(--blue-dim);
  stroke: var(--blue);
  stroke-width: 1.5;
}

.map-container path[data-code].known {
  fill: var(--green-dim);
  stroke: var(--green);
}

.map-container path[data-code].known.selected {
  fill: #102a14;
  stroke: var(--green);
  stroke-width: 1.5;
}

/* Map load error */
.map-load-error {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 13px;
  color: var(--text-muted);
}

/* ============================================================
   MAP CONTROLS — zoom/pan, floating bottom-left
   ============================================================ */
.map-controls {
  position: fixed;
  left: 20px;
  bottom: calc(var(--comp-bar-h) + 16px);
  z-index: 90;
  display: flex;
  flex-direction: column;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.map-ctrl-btn {
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 17px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    color var(--t-fast) var(--ease),
    background var(--t-fast) var(--ease);
  font-family: inherit;
  line-height: 1;
  user-select: none;
  flex-shrink: 0;
}

.map-ctrl-btn:last-child {
  border-bottom: none;
}

.map-ctrl-btn:hover {
  color: var(--text-primary);
  background: var(--bg-overlay);
}

/* Empty-state hint */
.map-hint {
  position: absolute;
  bottom: calc(var(--comp-bar-h) + 20px);
  left: 50%;
  transform: translateX(-50%);
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
  pointer-events: none;
  white-space: nowrap;
}

/* ============================================================
   DETAIL CARD — fixed floating, top-right
   ============================================================ */
.detail-card {
  position: fixed;
  top: calc(var(--header-h) + 14px);
  right: 24px;
  width: var(--detail-w);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  z-index: 90;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.55);
  animation: slideInRight var(--t-normal) var(--ease);
}

.detail-card[hidden] {
  display: none;
}

.card-flag-area {
  height: 80px;
  background: linear-gradient(135deg, #1f3a5f, var(--bg-surface));
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  position: relative;
}

.card-flag {
  font-size: 36px;
  line-height: 1;
  flex-shrink: 0;
}

.card-names {
  flex: 1;
  min-width: 0;
}

.card-common {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-official {
  font-size: 10px;
  color: var(--text-secondary);
  margin-top: 2px;
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-close {
  position: absolute;
  top: 10px;
  right: 10px;
  background: var(--bg-overlay);
  border: 1px solid var(--border);
  border-radius: 5px;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: var(--text-secondary);
  cursor: pointer;
  transition:
    color var(--t-fast) var(--ease),
    background var(--t-fast) var(--ease);
  line-height: 1;
  font-family: inherit;
}

.card-close:hover {
  color: var(--text-primary);
  background: var(--border);
}

.card-body {
  padding: 14px;
}

/* Stats grid */
.card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 12px;
}

.stat-label {
  font-size: 9px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 2px;
}

.stat-value {
  font-size: 12px;
  color: var(--text-primary);
  font-weight: 500;
}

.card-divider {
  height: 1px;
  background: var(--bg-overlay);
  margin-bottom: 12px;
}

/* Border chips */
.chip-label {
  font-size: 9px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin-bottom: 4px;
  display: block;
}

.card-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 12px;
}

.chip {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 3px 8px;
  font-size: 10px;
  color: var(--text-secondary);
  cursor: pointer;
  transition:
    border-color var(--t-fast) var(--ease),
    color var(--t-fast) var(--ease);
}

.chip:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.chip-none {
  font-size: 10px;
  color: var(--text-muted);
  font-style: italic;
}

/* Card action buttons */
.card-actions {
  display: flex;
  gap: 8px;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  flex: 1;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  border: 1px solid;
  cursor: pointer;
  transition: all var(--t-fast) var(--ease);
  text-align: center;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.btn-known {
  background: var(--green-dim);
  border-color: var(--green);
  color: var(--green);
}

.btn-known:hover {
  background: var(--green);
  color: var(--bg-base);
}

.btn-known.is-known {
  background: var(--green);
  color: var(--bg-base);
}

.btn-compare {
  background: var(--bg-raised);
  border-color: var(--border);
  color: var(--text-secondary);
}

.btn-compare:hover {
  border-color: var(--blue);
  color: var(--blue);
}

/* ============================================================
   COMPARATOR BAR — fixed at the bottom
   ============================================================ */
.comparator-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--comp-bar-h);
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.comp-label {
  font-size: 10px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  white-space: nowrap;
}

.comp-slots {
  display: flex;
  gap: 12px;
  flex: 1;
  align-items: center;
}

.comp-slot {
  flex: 1;
  max-width: 240px;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 52px;
}

.comp-slot--empty {
  border-style: dashed;
  justify-content: center;
}

.comp-slot-flag {
  font-size: 20px;
  flex-shrink: 0;
}

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

.comp-slot-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.comp-slot-sub {
  font-size: 10px;
  color: var(--text-secondary);
}

.comp-slot-remove {
  font-size: 11px;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 2px 5px;
  border-radius: 3px;
  background: none;
  border: none;
  font-family: inherit;
  flex-shrink: 0;
  transition:
    color var(--t-fast) var(--ease),
    background var(--t-fast) var(--ease);
}

.comp-slot-remove:hover {
  color: var(--red);
  background: rgba(248, 81, 73, 0.1);
}

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

.comp-vs {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 700;
  flex-shrink: 0;
}

/* Clear comparison button — in the comparator bar, visible only when slots have countries */
.comp-clear-bar {
  font-size: 10px;
  color: var(--text-muted);
  background: none;
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  padding: 5px 10px;
  cursor: pointer;
  font-family: inherit;
  white-space: nowrap;
  flex-shrink: 0;
  transition:
    color var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease);
}

.comp-clear-bar:hover {
  color: var(--red);
  border-color: var(--red);
}

/* ============================================================
   COMPARISON PANEL — slides up from above the comparator bar
   ============================================================ */
.comparison-panel {
  position: fixed;
  bottom: var(--comp-bar-h);
  left: 0;
  right: 0;
  z-index: 85;
  background: rgba(13, 17, 23, 0.98);
  border-top: 1px solid var(--border);
  padding: 16px 24px 20px;
  max-height: calc(100vh - var(--header-h) - var(--comp-bar-h));
  overflow-y: auto;
  animation: slideUpPanel var(--t-normal) var(--ease);
}

.comparison-panel[hidden] {
  display: none;
}

.comparison-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.comparison-panel-title {
  font-size: 10px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  font-weight: 600;
}

.comparison-clear {
  font-size: 10px;
  color: var(--text-muted);
  background: none;
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  padding: 3px 8px;
  cursor: pointer;
  font-family: inherit;
  transition:
    color var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease);
}

.comparison-clear:hover {
  color: var(--red);
  border-color: var(--red);
}

.comparison-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  max-width: 900px;
  margin: 0 auto;
}

/* Individual comparison card */
.comp-card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.comp-card--empty {
  border-style: dashed;
  border-color: var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
}

.comp-card-empty-text {
  font-size: 11px;
  color: var(--text-muted);
}

.comp-card-header {
  background: linear-gradient(135deg, #1f3a5f, var(--bg-raised));
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.comp-card-flag {
  font-size: 30px;
  line-height: 1;
  flex-shrink: 0;
}

.comp-card-names {
  flex: 1;
  min-width: 0;
}

.comp-card-common {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.comp-card-official {
  font-size: 10px;
  color: var(--text-secondary);
  margin-top: 2px;
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.comp-card-stats {
  padding: 12px 14px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

/* ============================================================
   BUTTON — active compare state
   ============================================================ */
.btn-compare.is-comparing {
  background: var(--blue-dim);
  border-color: var(--blue);
  color: var(--blue);
}

/* Card error message */
.card-error-msg {
  grid-column: 1 / -1;
  font-size: 11px;
  color: var(--red);
  line-height: 1.5;
}

/* ============================================================
   SKELETON LOADING
   ============================================================ */
.skeleton {
  background: linear-gradient(90deg, var(--bg-raised) 25%, var(--bg-overlay) 50%, var(--bg-raised) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 4px;
}

@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes slideInRight {
  from { opacity: 0; transform: translateX(16px); }
  to   { opacity: 1; transform: translateX(0); }
}

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

@keyframes slideUpPanel {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   RESPONSIVE — tablet (≤ 900px)
   ============================================================ */
@media (max-width: 900px) {
  :root {
    --detail-w: 260px;
  }
}

/* ============================================================
   RESPONSIVE — mobile (≤ 680px)
   The detail card becomes a bottom sheet above the comp bar.
   ============================================================ */
@media (max-width: 680px) {
  :root {
    --comp-bar-h: 64px;
  }

  /* Compact header */
  .app-header {
    padding: 10px 16px;
  }

  .logo-sub {
    display: none;
  }

  /* Detail card → bottom sheet */
  .detail-card {
    top: auto;
    right: 0;
    left: 0;
    bottom: var(--comp-bar-h);
    width: 100%;
    border-radius: 12px 12px 0 0;
    max-height: 58vh;
    overflow-x: hidden;
    overflow-y: auto;
    animation: slideUpPanel var(--t-normal) var(--ease);
  }

  /* Comparison panel fills available height on mobile */
  .comparison-panel {
    padding: 14px 16px 16px;
  }

  /* Comp bar: hide decorative label to free width for slots */
  .comp-label {
    display: none;
  }

  .comp-slot {
    max-width: none;
    padding: 8px 10px;
    min-height: 48px;
  }

  .comp-empty-text {
    font-size: 10px;
  }

  .comp-vs {
    font-size: 10px;
  }

  /* Map hint: slightly smaller on mobile */
  .map-hint {
    font-size: 10px;
    bottom: calc(var(--comp-bar-h) + 14px);
  }

  /* Map controls: hidden on touch devices — pinch-to-zoom and pan gestures cover this */
  .map-controls {
    display: none;
  }
}

/* ============================================================
   RESPONSIVE — small mobile (≤ 400px)
   ============================================================ */
@media (max-width: 400px) {
  .known-label {
    display: none;
  }

  .known-counter {
    padding: 6px 10px;
    gap: 6px;
  }

  .card-actions {
    flex-direction: column;
  }
}

/* Comparison cards stack on narrow screens */
@media (max-width: 600px) {
  .comparison-cards {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   ACCESSIBILITY
   ============================================================ */
*:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: 3px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================================
   SCROLLBAR
   ============================================================ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

/* ============================================================
   SELECTION
   ============================================================ */
::selection {
  background: rgba(88, 166, 255, 0.28);
  color: var(--text-primary);
}