/*
  Presidential Preference Sorter & Tier List
  Minimal, responsive, accessible dark-first theme
*/

:root {
  --bg: #0f1216;
  --bg-elev: #171b21;
  --text: #e6e9ee;
  --muted: #a9b2c3;
  --primary: #4ea1ff;
  --danger: #ff5d5d;
  --ok: #29c071;
  --border: #273142;
  --shadow: 0 8px 24px rgba(0,0,0,0.35);
  --radius: 12px;
}

@media (prefers-color-scheme: light) {
  :root { --bg:#f7f9fc; --bg-elev:#fff; --text:#0f1216; --muted:#555; --border:#e6eaf1; --shadow:0 6px 18px rgba(0,0,0,0.12); }
}

/* Manual theme toggle */
html.light { --bg:#f7f9fc; --bg-elev:#fff; --text:#0f1216; --muted:#555; --border:#e6eaf1; --shadow:0 6px 18px rgba(0,0,0,0.12); }

html, body { height: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  background: var(--bg);
  color: var(--text);
}

.container { max-width: 1100px; margin: 0 auto; padding: 1rem; }

.site-header { position: sticky; top: 0; z-index: 5; background: var(--bg-elev); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; gap: 1rem; align-items: center; justify-content: space-between; }
.app-title { font-size: 1.2rem; margin: .5rem 0; }
.header-actions { display:flex; gap:.5rem; }

.btn { background: var(--bg-elev); color: var(--text); border: 1px solid var(--border); padding: .55rem .8rem; border-radius: 10px; box-shadow: var(--shadow); cursor: pointer; }
.btn:hover { filter: brightness(1.05); }
.btn:focus { outline: 2px solid var(--primary); outline-offset: 2px; }
.btn.primary { background: var(--primary); color: #071422; border-color: transparent; }
.btn.danger { background: var(--danger); color: #fff; border-color: transparent; }
.btn.xl { font-size: 1.15rem; padding: .9rem 1.2rem; }

.input { background: var(--bg-elev); color: var(--text); border: 1px solid var(--border); padding: .5rem .75rem; border-radius: 10px; width: 100%; }
.file-input { position: relative; overflow: hidden; }
.file-input input[type="file"] { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.checkbox { display: inline-flex; align-items: center; gap: .4rem; }

.screen { padding: 1rem 0 2rem; }

.cards { display: grid; grid-template-columns: 1fr; gap: 1rem; align-items: stretch; }
@media (min-width: 900px) { .cards { grid-template-columns: 1fr 1fr; } }

/* Two-column layout for sorter: left = cards & controls, right = live ranking */
.sorter-main { display: block; }
.sorter-left { min-width: 0; }
.sorter-right { margin-top: 1rem; }
@media (min-width: 900px) {
  .sorter-main { display: grid; grid-template-columns: 1fr 320px; gap: 1rem; align-items: start; }
  .sorter-right { position: sticky; top: 96px; align-self: start; }
  /* make live ranking visually distinct */
  .sorter-right .live-panel { background: var(--bg-elev); border: 1px solid var(--border); padding: .6rem; border-radius: 10px; box-shadow: var(--shadow); }
}

.card { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: .75rem; display: grid; grid-template-rows: auto auto; gap: .5rem; }
.card .img-wrap { aspect-ratio: 4/5; background: #0a0d12; border-radius: 10px; overflow: hidden; display: grid; place-items: center; }
.card img { width: 100%; height: 100%; object-fit: cover; display: block; }
.card .placeholder { font-size: 2rem; color: var(--muted); display:grid; place-items:center; width:100%; height:100%; }
.card h3 { margin: .25rem 0 0; font-size: 1.15rem; }
.card .years { color: var(--muted); font-size: .95rem; }

/* brief flash when a pair changes (helps make skip visible) */
.pair-changed { box-shadow: 0 0 0 3px rgba(78,161,255,0.12); transition: box-shadow .25s ease; }

.pres-number { background: rgba(255,255,255,0.06); color: var(--text); padding: .15rem .45rem; border-radius: 999px; font-weight:700; margin-right: .5rem; font-size: .85rem; }
.pres-number.small { margin-left: .5rem; margin-right: 0; font-size: .8rem; padding: .15rem .35rem; }

.controls, .secondary-controls { display:flex; gap:.75rem; justify-content:center; margin-top: 1rem; flex-wrap: wrap; }

.sticky-actions { position: sticky; top: calc(56px + 4px); background: var(--bg); padding: .5rem 0; z-index: 4; display:flex; align-items:center; justify-content: space-between; gap: .75rem; flex-wrap: wrap; }
.progress { flex: 1; height: 10px; background: var(--bg-elev); border: 1px solid var(--border); border-radius: 999px; overflow: hidden; }
.progress-bar { height: 100%; background: linear-gradient(90deg, var(--ok), var(--primary)); width: 0%; transition: width .25s ease; }
.progress-text { color: var(--muted); font-size: .9rem; min-width: 7ch; text-align: right; }
.shortcuts { color: var(--muted); font-size: .9rem; }

.results-list { list-style: none; padding-left: 0; display: grid; gap: .35rem; }
.results-list .rankno { width: 2.5ch; display: inline-block; text-align: right; font-variant-numeric: tabular-nums; margin-right: .25rem; }
.results-list .tie { color: var(--muted); margin-left: .5rem; font-size: .9rem; }
.results-list .elo-final { margin-left: auto; color: var(--muted); font-size: .95rem; }

/* Live ranking panel */
.live-panel { margin-top: 1rem; }
.live-list { list-style: none; padding-left: 0; display: grid; gap: .2rem; }
.live-item { display: flex; align-items: baseline; gap: .25rem; color: var(--muted); }
.live-item .rankno { width: 2.5ch; text-align: right; font-variant-numeric: tabular-nums; color: var(--text); }
.live-item.comparing { color: var(--text); font-weight: 600; }
.elo-rating { margin-left: auto; color: var(--muted); font-size: .95rem; font-variant-numeric: tabular-nums; }
.welcome-elo-settings .input { display: inline-block; vertical-align: middle; }
.rating-delta { margin-left: .5rem; font-size: .8rem; color: var(--muted); }
.rating-delta {
  margin-left: 6px;
  font-size: 0.8em;
  color: #2b8a3e;
  background: rgba(43,138,62,0.08);
  padding: 2px 6px;
  border-radius: 8px;
}
.rating-delta[title] { cursor: help; }
.elo-tooltip { font-size: .85rem; color: var(--muted); }

.tier-actions { display:flex; flex-wrap: wrap; gap: .5rem; align-items: center; margin-bottom: .75rem; }

.tier-board { display: grid; gap: .75rem; grid-template-columns: 1fr; }
@media (min-width: 950px) { .tier-board { grid-template-columns: repeat(8, minmax(120px, 1fr)); } }

.tier-col { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; display:grid; grid-template-rows: auto 1fr; min-height: 220px; }
.tier-col header { padding: .5rem .75rem; font-weight: 700; background: #0c1016; border-bottom: 1px solid var(--border); display:flex; align-items:center; justify-content: space-between; }
.tier-col .list { padding: .25rem; display: grid; gap: .25rem; align-content: start; }

.tier-item { display:flex; flex-direction: column; align-items:center; justify-content:flex-start; gap: .25rem; padding: 6px 4px; background: transparent; border: none; border-radius: 6px; cursor: grab; position: relative; }
.tier-item:active { cursor: grabbing; }
.tier-img-wrap { width: 72px; height: 90px; display: grid; place-items: center; background: #0c1118; border: 1px solid var(--border); border-radius: 8px; box-shadow: var(--shadow); overflow: visible; }
.tier-img-wrap img { width: 100%; height: 100%; object-fit: cover; display:block; }
.tier-item .name { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.tier-item .pres-number.small { display: none; }

/* Overlay with name shown on hover/focus */
.tier-caption {
  position: absolute;
  left: 50%;
  top: calc(100% + 2px);
  transform: translateX(-50%) translateY(8px) scaleY(0.96);
  white-space: nowrap;
  padding: 6px 8px;
  background: rgba(0,0,0,0.88);
  color: #fff;
  font-weight: 600;
  font-size: .82rem;
  text-align: center;
  border-radius: 6px;
  opacity: 0;
  transition: opacity .14s ease, transform .16s cubic-bezier(.2,.8,.2,1);
  pointer-events: none;
  box-shadow: 0 6px 18px rgba(0,0,0,0.45);
  z-index: 6;
}
/* Show caption only when the tile is hovered or focused. It pops out beneath the image without resizing the tile. */
.tier-item:hover .tier-caption,
.tier-item:focus .tier-caption,
.tier-item:focus-within .tier-caption { opacity: 1; transform: translateX(-50%) translateY(0) scaleY(1); pointer-events: auto; }

.tier-search { margin-top: 1rem; }

.site-footer { border-top: 1px solid var(--border); color: var(--muted); background: var(--bg-elev); }
.site-footer .container { padding-bottom: 2rem; }

.toast { position: fixed; bottom: 1rem; right: 1rem; background: #111922; color: var(--text); border: 1px solid var(--border); padding: .6rem .8rem; border-radius: 10px; box-shadow: var(--shadow); opacity: 0; transform: translateY(8px); transition: all .2s ease; pointer-events: none; max-width: 60ch; }
.toast.show { opacity: 1; transform: translateY(0); }

/* Print-friendly tier board */
@media print {
  body { background: #fff; color: #000; }
  .site-header, .site-footer, .tier-actions, .tier-search, .sticky-actions { display:none; }
  .tier-board { grid-template-columns: repeat(8, 1fr); }
  .tier-col { break-inside: avoid; }
}

/* ============================================================
   PICKER MODE STYLES
   Approval-voting style sorter inspired by dragonflycave.com
   ============================================================ */

.picker-layout {
  display: grid;
  gap: 1.5rem;
}
@media (min-width: 900px) {
  .picker-layout {
    grid-template-columns: 1fr 280px;
    align-items: start;
  }
}

.picker-main { min-width: 0; }

/* Evaluating grid */
.picker-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  max-width: 600px;
  margin: 0 auto 1rem;
  gap: 0.75rem;
}

.picker-item {
  position: relative;
  background: var(--bg-elev);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 0.5rem;
  cursor: pointer;
  transition: border-color 0.15s ease, transform 0.1s ease, box-shadow 0.15s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  width: 100%;
}

.picker-item:hover {
  border-color: var(--muted);
  transform: translateY(-2px);
}

.picker-item.selected {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(78, 161, 255, 0.25), var(--shadow);
  background: linear-gradient(180deg, rgba(78,161,255,0.08) 0%, transparent 100%);
}

.picker-item.selected::after {
  content: '✓';
  position: absolute;
  top: 6px;
  right: 6px;
  width: 24px;
  height: 24px;
  background: var(--primary);
  color: #071422;
  font-weight: bold;
  font-size: 14px;
  border-radius: 50%;
  display: grid;
  place-items: center;
}

.picker-img-wrap {
  width: 100%;
  aspect-ratio: 4/5;
  background: #0a0d12;
  border-radius: 8px;
  overflow: hidden;
  display: grid;
  place-items: center;
}

.picker-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.picker-placeholder {
  font-size: 2rem;
  font-weight: 700;
  color: var(--muted);
}

.picker-name {
  margin-top: 0.4rem;
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 1.2;
  color: var(--text);
}

.picker-number {
  position: absolute;
  top: 6px;
  left: 6px;
  background: rgba(0,0,0,0.7);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
}

/* Picker controls */
.picker-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-bottom: 0.75rem;
}

.picker-secondary-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}

.picker-status {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.picker-hint {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  min-height: 1.5em;
  margin-top: 0.25rem;
}

.picker-notice {
  text-align: center;
  padding: 2rem;
  color: var(--muted);
}

.picker-notice p {
  margin-bottom: 1rem;
}

/* Picker notice toast */
#picker-notice {
  position: fixed;
  bottom: 5rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-elev);
  color: var(--danger);
  border: 1px solid var(--danger);
  padding: 0.6rem 1rem;
  border-radius: 10px;
  box-shadow: var(--shadow);
  z-index: 100;
  font-weight: 500;
}

/* Favorites sidebar */
.picker-sidebar {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem;
  box-shadow: var(--shadow);
}

.picker-sidebar h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.picker-sidebar .drag-hint {
  font-size: 0.75rem;
  color: var(--muted);
  font-weight: 400;
}

.picker-favorites {
  min-height: 120px;
  overflow-y: auto;
}

.picker-fav-empty {
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
  padding: 2rem 0.5rem;
}

.picker-copy-btn {
  width: 100%;
  margin-top: 0.5rem;
  font-size: 0.9rem;
  opacity: 0.8;
}

.picker-copy-btn:hover {
  opacity: 1;
}

.picker-copy-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.picker-fav-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.4rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 0.35rem;
  cursor: grab;
  transition: background 0.1s ease;
}

.picker-fav-item:hover {
  background: var(--bg-elev);
}

.picker-fav-item:active {
  cursor: grabbing;
}

.picker-fav-rank {
  min-width: 1.8ch;
  text-align: right;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--primary);
}

.picker-fav-img {
  width: 32px;
  height: 40px;
  border-radius: 4px;
  overflow: hidden;
  background: #0a0d12;
  flex-shrink: 0;
}

.picker-fav-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.picker-fav-name {
  font-size: 0.85rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.picker-fav-number {
  font-size: 0.7rem;
  color: var(--text-muted);
  white-space: nowrap;
  margin-left: 0.25rem;
  opacity: 0.8;
}

/* Sortable drag states */
.sortable-ghost {
  opacity: 0.4;
}

.sortable-chosen {
  background: rgba(78, 161, 255, 0.1) !important;
}

/* Picker progress */
.picker-progress-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.picker-progress-wrap .progress {
  flex: 1;
}

/* Credit link */
.picker-credit {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.picker-credit a {
  color: var(--primary);
  text-decoration: none;
}

.picker-credit a:hover {
  text-decoration: underline;
}

.picker-find-link {
  display: inline-block;
  margin-top: 0.5rem;
  font-style: italic;
  cursor: pointer;
}

/* Responsive picker grid adjustments */
@media (max-width: 600px) {
  .picker-grid {
    grid-template-columns: repeat(2, 1fr);
    max-width: 100%;
  }
  
  .picker-item {
    padding: 0.4rem;
  }
  
  .picker-name {
    font-size: 0.8rem;
  }
  
  .picker-controls .btn.xl {
    padding: 0.7rem 1rem;
    font-size: 1rem;
  }
  
  .picker-sidebar {
    margin-top: 1rem;
  }
}

/* Print styles for picker results */
@media print {
  .picker-controls,
  .picker-secondary-controls,
  .picker-credit,
  .picker-progress-wrap,
  .picker-status,
  .picker-hint,
  #picker-notice { display: none; }
}

/* Tier Management Interface */
.tier-management-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 600px;
  margin: 0 auto;
}

.tier-management-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
}

.tier-name {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--primary);
  min-width: 80px;
}

.tier-actions {
  display: flex;
  gap: 0.5rem;
}

.btn-small {
  padding: 0.4rem 0.6rem;
  font-size: 0.875rem;
  border-radius: 6px;
  min-width: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-small:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.add-tier-section {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  margin-top: 1rem;
}

.add-tier-section input {
  flex: 1;
  margin: 0;
}

.tier-presets {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  margin-top: 1rem;
}

.tier-presets h4 {
  margin: 0 0 0.5rem 0;
  color: var(--muted);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tier-presets button {
  align-self: flex-start;
}

.tier-management-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 2rem;
}

@media (max-width: 768px) {
  .tier-management-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  
  .tier-actions {
    align-self: stretch;
    justify-content: space-between;
  }
  
  .add-tier-section {
    flex-direction: column;
    align-items: stretch;
  }
}