/* Galaxy kNN Browser — light, clean, soft-rounded */

:root {
  --bg:        #f5f7fa;
  --fg:        #2d3748;
  --hint:      #5b6b80;
  --accent:    #1f4e79;
  --primary:   #4f7be0;
  --primary-h: #3d68d0;
  --primary-a: #2c54b0;
  --soft:      #e2e8f0;
  --soft-h:    #cbd5e1;
  --link:      #1f6feb;
  --query-rd:  #c8102e;
  --status-bg: #1f2937;
  --status-fg: #e2e8f0;
  --border:    #cbd5e1;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--fg);
             font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
             font-size: 14px; }
h2, h3 { color: var(--accent); margin: 4px 0; }
hr { border: 0; border-top: 1px solid var(--border); margin: 10px 0; }

#root { display: flex; flex-direction: column; min-height: 100vh; }

.row { display: flex; align-items: center; gap: 8px; padding: 10px 14px;
       flex-wrap: wrap; }
.row-query { padding-top: 14px; }
.hdr { font-weight: 600; color: var(--accent); }
.hint { color: var(--accent); font-size: 13px; }
.sep { display: inline-block; width: 1px; height: 24px; background: var(--border);
       margin: 0 12px; }
.grow { flex: 1; }
.setup { color: var(--accent); font-size: 13px; font-weight: 600;
         margin-left: 16px; opacity: 0.85; }

input, select {
  font: inherit; padding: 6px 8px; border: 1px solid var(--border);
  border-radius: 6px; background: white; color: var(--fg);
}
#id-input  { flex: 0 1 240px; min-width: 200px; }
#id-select { flex: 1 1 360px; min-width: 260px; max-width: 520px; }
#filter-count { white-space: nowrap; }

.btn { font: inherit; font-weight: 600; border: 0; cursor: pointer;
       border-radius: 8px; padding: 8px 14px; transition: background 0.12s; }
.btn-round  { background: var(--primary); color: white; }
.btn-round:hover  { background: var(--primary-h); }
.btn-round:active { background: var(--primary-a); }
.btn-soft   { background: var(--soft); color: var(--fg); }
.btn-soft:hover  { background: var(--soft-h); }
.btn-soft:active { background: #a8b3c4; }

/* Filters */
.filters { border: 1px solid var(--border); border-radius: 10px;
           margin: 6px 14px; padding: 12px 14px 8px; background: white; }
.filters legend { font-weight: 700; color: var(--accent); padding: 0 6px; }
.filt-row { display: flex; flex-wrap: wrap; align-items: center;
            gap: 6px 10px; margin-bottom: 8px; }
.filt-row label { font-size: 13px; color: var(--fg); }
.filt-row input[type="number"] { width: 80px; }
.filt-row #f-res-min, .filt-row #f-res-max { width: 80px; }
.filt-hint { color: var(--hint); font-style: italic; font-size: 12.5px;
             margin: 6px 0 0; }

/* Image bar */
.imgbar { padding-top: 4px; padding-bottom: 0; }
.setup-hint {
  margin: 0 14px 4px;
  color: var(--hint);
  font-size: 12px;
  font-style: italic;
  line-height: 1.4;
}
.setup-hint a { color: var(--link); text-decoration: underline; }

/* Two image panels — fixed widths so the gap never shifts */
.panels { display: flex; gap: 16px; padding: 10px 14px; flex: 1;
          align-items: flex-start; }
.panel { flex: 1; display: flex; flex-direction: column; align-items: center;
         min-width: 0; }
.panel .title { font-size: 13px; line-height: 1.35; text-align: center;
                min-height: 56px; margin-bottom: 6px; white-space: pre-line; }
.panel-q .title { font-weight: 700; }
.panel .frame { position: relative; width: 100%;
                aspect-ratio: 1 / 1; max-width: 480px;
                background: white;
                border: 4px solid var(--border); border-radius: 6px;
                overflow: hidden; }
.panel-q .frame { border-color: var(--query-rd); border-width: 5px; }
.panel-n .frame { border-color: var(--accent); border-width: 3px; }

.panel .frame img { position: absolute; inset: 0; width: 100%; height: 100%;
                    object-fit: contain; image-rendering: pixelated; }
.panel .frame .circle { position: absolute; inset: 0; width: 100%; height: 100%;
                        pointer-events: none; }
.panel .frame .circle circle { fill: none; stroke: #1f77ff;
                               stroke-width: 1.4; vector-effect: non-scaling-stroke; }
body.no-circle .panel .frame .circle { display: none; }

/* 100-cell grid (used both for "Show all 100 NN" and the random tab) */
.grid-section {
  padding: 14px;
  border-top: 1px solid var(--border);
  background: white;
}
.grid-section.hidden { display: none; }
.grid-section h3 {
  margin: 0 0 10px;
  color: var(--accent);
}
.grid-100 {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}
.grid-cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--bg);
  border-radius: 6px;
  padding: 6px;
  border: 1px solid var(--border);
  min-width: 0;
  text-align: center;
}
.grid-cell img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  background: white;
  border: 2px solid var(--accent);
  border-radius: 4px;
  image-rendering: pixelated;
  cursor: pointer;
}
.grid-cell img:hover { filter: brightness(1.05); border-color: var(--primary); }
.grid-cell .meta {
  font-size: 12px;
  margin-top: 6px;
  line-height: 1.4;
  color: var(--fg);
  word-break: break-all;
}
.grid-cell .rank {
  font-weight: bold;
  color: var(--accent);
  font-size: 13px;
}

/* Footer */
.footer { padding: 6px 14px 4px; }
.footer hr { margin: 0 0 6px; }
.footer-line { display: flex; justify-content: space-between; align-items: center;
               flex-wrap: wrap; gap: 8px; }
.footer-line .school { font-weight: 700; color: var(--fg); }
.footer-line a { color: var(--link); text-decoration: underline; }
.footer-line .dot { color: var(--hint); }

/* Status bar */
#status { background: var(--status-bg); color: var(--status-fg);
          padding: 6px 14px; font-size: 13px; }

/* About modal */
.overlay { position: fixed; inset: 0; background: rgba(20, 28, 45, 0.55);
           display: flex; align-items: center; justify-content: center; z-index: 50; }
.overlay.hidden { display: none; }
.modal { background: var(--bg); border-radius: 12px; padding: 22px 24px;
         width: min(640px, 92vw); max-height: 90vh; overflow: auto;
         box-shadow: 0 14px 50px rgba(0,0,0,0.25); }
.modal h2 { font-size: 20px; }
.modal p  { line-height: 1.5; margin: 8px 0; }
.modal a { color: var(--link); text-decoration: underline; }
.modal-actions { display: flex; justify-content: flex-end; margin-top: 12px; }
.modal .school { font-weight: 700; }