/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #f4f1eb;
  --surface:     #ffffff;
  --border:      #d4cfc5;
  --text:        #1a1a1a;
  --text-muted:  #6b6660;
  --primary:     #3730a3;
  --primary-hover: #312e81;
  --success:     #16a34a;
  --success-bg:  #dcfce7;
  --fail:        #dc2626;
  --fail-bg:     #fee2e2;
  --free-bg:     #fef9c3;
  --free-border: #ca8a04;
  --bingo-bg:    #fef08a;
  --bingo-glow:  #eab308;
  --header-bg:   #1e1b4b;
  --header-text: #ffffff;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Header ── */
.site-header {
  background: var(--header-bg);
  padding: 0 2rem;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-title {
  color: var(--header-text);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.site-header nav { display: flex; gap: 1.5rem; }
.site-header nav a {
  color: rgba(255,255,255,0.75);
  font-size: 0.9rem;
  text-decoration: none;
}
.site-header nav a:hover { color: #fff; }

/* ── Main ── */
main { max-width: 960px; margin: 0 auto; padding: 2rem 1.5rem; }

/* ── Flashes ── */
.flash-container { margin-bottom: 1.5rem; }
.flash {
  background: #fef3c7;
  border: 1px solid #f59e0b;
  border-radius: 6px;
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

/* ── Buttons ── */
.btn {
  display: inline-block;
  padding: 0.55rem 1.25rem;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s;
}
.btn-primary   { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); color: #fff; }
.btn-secondary { background: var(--surface); color: var(--primary); border: 1.5px solid var(--primary); }
.btn-ghost     { background: transparent; color: var(--text-muted); border: 1.5px solid var(--border); }
.btn-ghost:hover { color: var(--text); border-color: #999; }
.btn-sm  { padding: 0.3rem 0.75rem; font-size: 0.8rem; }
.btn-large { padding: 0.75rem 2rem; font-size: 1rem; }

/* ── Hero (index) ── */
.hero {
  text-align: center;
  padding: 3rem 1rem 2rem;
}
.hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--header-bg);
  margin-bottom: 0.75rem;
}
.hero-sub {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 520px;
  margin: 0 auto 2.5rem;
}
.hero-actions { display: flex; flex-direction: column; align-items: center; gap: 1rem; }
.divider { color: var(--text-muted); font-size: 0.85rem; }
.find-form { display: flex; gap: 0.5rem; width: 100%; max-width: 360px; }
.find-form input {
  flex: 1;
  padding: 0.55rem 0.875rem;
  border: 1.5px solid var(--border);
  border-radius: 6px;
  font-size: 0.9rem;
  font-family: 'Courier New', monospace;
  background: var(--surface);
}
.find-form input:focus { outline: none; border-color: var(--primary); }

.how-it-works {
  max-width: 520px;
  margin: 3rem auto 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.75rem 2rem;
}
.how-it-works h2 { font-size: 1.1rem; margin-bottom: 1rem; color: var(--header-bg); }
.how-it-works ol { padding-left: 1.25rem; }
.how-it-works li { margin-bottom: 0.6rem; font-size: 0.92rem; color: var(--text-muted); }
.how-it-works li strong { color: var(--text); }

/* ── Create form ── */
.create-page h1 { font-size: 1.75rem; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 0.4rem; }
.page-sub { color: var(--text-muted); margin-bottom: 2rem; }

.identity-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 2rem;
}
@media (max-width: 600px) { .identity-fields { grid-template-columns: 1fr; } }

.field label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 0.35rem; color: var(--text-muted); }
.field input, .field textarea {
  width: 100%;
  padding: 0.55rem 0.75rem;
  border: 1.5px solid var(--border);
  border-radius: 6px;
  font-size: 0.9rem;
  font-family: inherit;
  background: var(--surface);
  transition: border-color 0.15s;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--primary); }

.board-preview-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

/* ── Bingo Grid ── */
.board-grid {
  background: var(--surface);
  border: 2px solid #1e1b4b;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  width: 100%;
  max-width: 700px;
  margin: 0 auto;
}

.bingo-header {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  background: var(--header-bg);
}
.bingo-header div {
  text-align: center;
  color: var(--header-text);
  font-size: 1.6rem;
  font-weight: 900;
  letter-spacing: 0.05em;
  padding: 0.6rem 0;
  border-right: 1px solid rgba(255,255,255,0.15);
}
.bingo-header div:last-child { border-right: none; }

.cell {
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  min-height: 100px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0.5rem;
  position: relative;
  transition: background 0.2s;
}
.cell:nth-child(5n+1) { border-right: 1px solid var(--border); } /* keep consistent */
/* Remove right border from last column */
.board-grid .cell:nth-child(5n) { border-right: none; }
/* Remove bottom border from last row cells */
.board-grid .cell:nth-last-child(-n+5) { border-bottom: none; }

.cell-pending { background: var(--surface); }
.cell-success { background: var(--success-bg); }
.cell-fail    { background: var(--fail-bg); }
.cell-free    { background: var(--free-bg); border-color: #e5e0c0; }
.cell-bingo   { background: var(--bingo-bg); box-shadow: inset 0 0 0 2px var(--bingo-glow); }

.cell-text {
  font-size: 0.75rem;
  text-align: center;
  line-height: 1.35;
  word-break: break-word;
}
.cell-success .cell-text { color: #14532d; }
.cell-fail    .cell-text { color: #7f1d1d; text-decoration: line-through; opacity: 0.75; }

.status-icon {
  font-size: 1.1rem;
  margin-top: 0.25rem;
  font-weight: 700;
}
.cell-success .status-icon { color: var(--success); }
.cell-fail    .status-icon { color: var(--fail); }

.free-star  { font-size: 1.75rem; }
.free-label { font-size: 0.65rem; font-weight: 700; letter-spacing: 0.08em; color: #92400e; margin-top: 0.1rem; }

/* Create grid textarea cells */
.cell-input { padding: 0.35rem; }
.cell-input textarea {
  width: 100%;
  height: 100%;
  min-height: 80px;
  border: none;
  resize: none;
  font-size: 0.72rem;
  font-family: inherit;
  text-align: center;
  background: transparent;
  outline: none;
  line-height: 1.35;
  color: var(--text);
}
.cell-input textarea:focus { background: #f0f4ff; border-radius: 4px; }
.cell-input textarea::placeholder { color: #bbb; }

.create-footer { text-align: center; margin-top: 2rem; }

/* ── Board page ── */
.board-page { max-width: 720px; margin: 0 auto; }
.board-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.5rem;
}
.board-header h1 { font-size: 1.75rem; font-weight: 800; letter-spacing: -0.02em; }
.bingo-badge {
  background: #fef08a;
  border: 2px solid #ca8a04;
  border-radius: 20px;
  padding: 0.25rem 0.875rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: #78350f;
}
.phrase-hint { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 1.5rem; font-family: 'Courier New', monospace; }

.legend {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  margin-top: 1.25rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}
.legend-item { display: flex; align-items: center; gap: 0.4rem; }
.swatch { width: 14px; height: 14px; border-radius: 3px; border: 1px solid rgba(0,0,0,0.1); }
.swatch-pending { background: var(--surface); border-color: var(--border); }
.swatch-success { background: var(--success-bg); }
.swatch-fail    { background: var(--fail-bg); }
.swatch-free    { background: var(--free-bg); }

/* ── New board banner ── */
.new-board-banner {
  background: #eff6ff;
  border: 2px solid #3b82f6;
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
  text-align: center;
}
.phrase-display {
  font-family: 'Courier New', monospace;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary);
  margin: 0.6rem 0 0.4rem;
  letter-spacing: 0.04em;
}
.phrase-url { font-size: 0.8rem; color: var(--text-muted); }
.phrase-url code { font-family: 'Courier New', monospace; }

/* ── Admin pages ── */
.admin-page { max-width: 900px; margin: 0 auto; }
.admin-page h1 { font-size: 1.75rem; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 1.5rem; }

.admin-board-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
  gap: 1rem;
  flex-wrap: wrap;
}
.admin-board-header > div { display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; }

.boards-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.boards-table th, .boards-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.boards-table th { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; color: var(--text-muted); }
.boards-table tr:hover td { background: #f9f7f3; }
.boards-table td:last-child { display: flex; gap: 0.4rem; }

.empty-state { color: var(--text-muted); text-align: center; padding: 3rem; }

/* Admin grid — extra height for controls */
.admin-cell { min-height: 120px; }
.admin-controls {
  display: flex;
  gap: 0.25rem;
  margin-top: 0.4rem;
}
.status-btn {
  width: 26px;
  height: 26px;
  border-radius: 5px;
  border: 1.5px solid var(--border);
  background: var(--surface);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 700;
  line-height: 1;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}
.status-btn:hover { border-color: #999; }
.status-btn.status-success.active { background: var(--success-bg); border-color: var(--success); color: var(--success); }
.status-btn.status-fail.active    { background: var(--fail-bg);    border-color: var(--fail);    color: var(--fail); }
.status-btn.status-pending.active { background: #f3f4f6; border-color: #6b7280; color: #6b7280; }

/* ── Auth ── */
.auth-page { max-width: 380px; margin: 4rem auto; }
.auth-page h1 { font-size: 1.5rem; font-weight: 800; margin-bottom: 1.5rem; }
.auth-form { display: flex; flex-direction: column; gap: 1rem; }

/* ── Duplicate cells ── */
.cell-duplicate { outline: 2px solid var(--fail); outline-offset: -2px; background: #fff5f5 !important; }
.cell-duplicate textarea { color: var(--fail); }

/* ── Similar-predictions popup ── */
#similar-popup {
  position: absolute;
  background: #1e1b4b;
  color: #fff;
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
  font-size: 0.72rem;
  line-height: 1.45;
  width: 210px;
  z-index: 200;
  transform: translate(-50%, -100%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease;
  box-shadow: 0 4px 14px rgba(0,0,0,0.28);
}
#similar-popup::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: #1e1b4b;
}
#similar-popup.visible { opacity: 1; }
#similar-popup .pop-icon { margin-right: 0.2rem; }
#similar-popup strong { color: #a5b4fc; }
.pop-examples {
  margin-top: 0.4rem;
  padding-top: 0.35rem;
  border-top: 1px solid rgba(255,255,255,0.18);
}
.pop-examples span {
  display: block;
  color: rgba(255,255,255,0.65);
  font-size: 0.66rem;
  margin-bottom: 0.15rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── Suggestions ── */
.sug-summary {
  background: #eff6ff;
  border: 1px solid #93c5fd;
  border-radius: 8px;
  padding: 0.75rem 1rem;
  font-size: 0.88rem;
  margin-bottom: 1.25rem;
  color: #1e40af;
}

.cell-has-sug { outline: 2px solid #3b82f6; outline-offset: -2px; }

.suggestion-chip {
  margin-top: 0.4rem;
  background: #eff6ff;
  border: 1px solid #93c5fd;
  border-radius: 6px;
  padding: 0.35rem 0.4rem;
  font-size: 0.68rem;
  text-align: left;
  line-height: 1.35;
  width: 100%;
}
.sug-icon { font-size: 0.7rem; }
.sug-verdict { font-weight: 700; font-size: 0.7rem; }
.sug-verdict.sug-success { color: var(--success); }
.sug-verdict.sug-fail    { color: var(--fail); }
.sug-verdict.sug-unclear { color: #92400e; }
.sug-conf { color: var(--text-muted); font-size: 0.68rem; }
.sug-evidence { color: var(--text-muted); margin: 0.2rem 0 0.15rem; font-size: 0.66rem; }
.sug-source-link { font-size: 0.64rem; color: var(--primary); }
.sug-actions { display: flex; gap: 0.25rem; margin-top: 0.3rem; }
.sug-apply { background: #dbeafe; color: #1e40af; border-color: #93c5fd; }
.sug-apply:hover { background: #bfdbfe; }

/* ── Clusters ── */
.cluster-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  margin-top: 0.5rem;
}
.cluster-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}
.cluster-header {
  background: var(--header-bg);
  padding: 0.65rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
}
.cluster-label { color: #fff; font-weight: 700; font-size: 0.9rem; }
.cluster-count { color: rgba(255,255,255,0.6); font-size: 0.75rem; white-space: nowrap; }
.cluster-predictions { list-style: none; padding: 0.5rem 0; }
.cluster-pred {
  padding: 0.4rem 1rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.8rem;
}
.cluster-pred:last-child { border-bottom: none; }
.cluster-pred-text { display: block; }
.cluster-pred-meta { color: var(--text-muted); font-size: 0.72rem; }

/* ── Responsive ── */
@media (max-width: 600px) {
  .board-grid { font-size: 0.7rem; }
  .bingo-header div { font-size: 1.2rem; padding: 0.4rem 0; }
  .cell { min-height: 70px; padding: 0.3rem; }
  .hero h1 { font-size: 1.75rem; }
}