:root {
  --bg: #f5f5f0;
  --fg: #1a1a1a;
  --muted: #6b6b6b;
  --card: #ffffff;
  --border: #e2e2dc;
  --accent: #c8102e;      /* Coca red */
  --accent-dark: #8f0b21;
  --zero: #1a1a1a;        /* Coca Zero black */
  --ok: #1f7a3a;
  --ko: #b3261e;
  --warn: #b45309;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  font-size: 17px;
  line-height: 1.5;
}

header {
  background: var(--fg);
  color: #fff;
  padding: 12px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
header .brand {
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.05rem;
}
header nav { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
header nav a {
  color: #fff;
  text-decoration: none;
  opacity: 0.9;
  font-size: 0.95rem;
}
header nav a:hover { opacity: 1; text-decoration: underline; }
header .hello { color: #ccc; font-size: 0.9rem; }

main {
  max-width: 780px;
  margin: 20px auto;
  padding: 0 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

h1 { margin-top: 0; }
h2 { margin-top: 0; }

.muted { color: var(--muted); }
.small { font-size: 0.9rem; }

.flash {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
  border: 1px solid;
}
.flash-error { background: #fdecea; border-color: #f5b7b1; color: #78120b; }
.flash-success { background: #eaf7ee; border-color: #b7dfc3; color: #16603a; }

label {
  display: block;
  margin-bottom: 14px;
  font-weight: 500;
}
input[type="text"], input[type="password"], input[type="number"] {
  display: block;
  width: 100%;
  padding: 10px 12px;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-top: 6px;
  background: #fff;
}

.btn {
  display: inline-block;
  padding: 10px 18px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  margin-right: 8px;
}
.btn:hover { background: var(--accent-dark); }
.btn.secondary { background: #4a4a4a; }
.btn.secondary:hover { background: #2d2d2d; }
.btn.danger { background: var(--ko); }

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin: 20px 0;
}
.stats > div {
  background: #fafaf6;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  text-align: center;
  font-size: 0.9rem;
  color: var(--muted);
}
.stats .big {
  display: block;
  font-size: 1.8rem;
  color: var(--fg);
  font-weight: 700;
  margin-bottom: 4px;
}

.actions { margin: 20px 0; display: flex; flex-wrap: wrap; gap: 8px; }
.danger-zone {
  border-top: 1px solid var(--border);
  padding-top: 16px;
  margin-top: 24px;
}

/* Taste page */
.taste { text-align: center; }
.progress {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 20px;
}
.instruction { font-size: 1.1rem; margin: 8px 0; }
.cup-id {
  font-size: 5rem;
  font-weight: 900;
  color: var(--accent);
  letter-spacing: 4px;
  margin: 8px 0 16px;
  padding: 16px;
  background: #fafaf6;
  border: 2px dashed var(--accent);
  border-radius: 16px;
}

.vote-form fieldset {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 20px;
  text-align: left;
}
.vote-form legend { font-weight: 600; padding: 0 8px; }

.choices { display: flex; gap: 12px; flex-wrap: wrap; }
.choice {
  flex: 1;
  min-width: 140px;
  padding: 16px;
  border: 2px solid var(--border);
  border-radius: 10px;
  text-align: center;
  cursor: pointer;
  transition: all 0.15s;
  margin: 0;
  font-weight: 600;
}
.choice input { display: none; }
.choice:hover { border-color: var(--accent); }
.choice:has(input:checked) {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.confidence { display: flex; gap: 8px; justify-content: space-between; }
.conf {
  flex: 1;
  padding: 14px 6px;
  border: 2px solid var(--border);
  border-radius: 10px;
  text-align: center;
  cursor: pointer;
  font-weight: 700;
  font-size: 1.1rem;
  margin: 0;
}
.conf input { display: none; }
.conf:hover { border-color: var(--accent); }
.conf:has(input:checked) {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}
.conf-legend {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 6px;
  padding: 0 6px;
}

/* Cup grid */
.cups-grid {
  border-collapse: collapse;
  margin: 16px 0;
  width: 100%;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.9rem;
}
.cups-grid th, .cups-grid td {
  border: 1px solid var(--border);
  padding: 6px 8px;
  text-align: center;
}
.cups-grid th { background: #fafaf6; }
.cup.normal { background: var(--accent); color: #fff; font-weight: 700; }
.cup.zero   { background: var(--zero);   color: #fff; font-weight: 700; }

/* Ranking */
.ranking { width: 100%; border-collapse: collapse; }
.ranking th, .ranking td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}
.ranking tbody tr:first-child td { font-weight: 700; }
.ranking th { color: var(--muted); font-weight: 600; font-size: 0.9rem; }

.details { width: 100%; border-collapse: collapse; margin: 8px 0 16px; }
.details th, .details td {
  padding: 6px 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  font-size: 0.92rem;
}
.details tr.ok td { background: #f0f9f2; }
.details tr.ko td { background: #fdf1f0; }
.details tr.pending td { color: var(--muted); }

details summary {
  cursor: pointer;
  padding: 8px 0;
}

/* Publish zone */
.publish-zone {
  border-top: 1px solid var(--border);
  padding-top: 16px;
  margin-top: 24px;
}
.publish-zone h2 { font-size: 1.15rem; margin-top: 0; }

/* KPIs */
.kpis {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 16px;
}
.kpi {
  background: #fafaf6;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  text-align: center;
}
.kpi-label { color: var(--muted); font-size: 0.85rem; margin-bottom: 6px; }
.kpi-value { font-size: 2rem; font-weight: 800; color: var(--fg); }
.kpi-sub   { color: var(--muted); font-size: 0.85rem; margin-top: 4px; }

/* Chart wrappers */
.chart-wrap {
  position: relative;
  width: 100%;
  height: 340px;
  margin-top: 8px;
}
.chart-wrap.small { height: 260px; max-width: 360px; margin: 0 auto; }

/* Prepare page */
.prepare { text-align: center; }
.pour {
  font-size: 1.6rem;
  padding: 26px;
  border-radius: 14px;
  margin: 8px auto 24px;
  max-width: 420px;
  color: #fff;
  letter-spacing: 1px;
}
.pour.normal { background: var(--accent); }
.pour.zero   { background: var(--zero); }
.pour strong { font-size: 2rem; display: block; margin-top: 4px; }
.prepare-nav {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin: 20px 0 16px;
}
.prepare-nav .btn { margin: 0; min-width: 140px; }
.btn.disabled { opacity: 0.4; cursor: not-allowed; pointer-events: none; }
.prepare-progress-bar {
  height: 8px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
  margin: 12px 0;
}
.prepare-progress-bar .fill {
  height: 100%;
  background: var(--accent);
  transition: width 0.2s;
}
.center { text-align: center; }

/* Confusion table */
.confusion {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
  text-align: center;
}
.confusion th, .confusion td {
  padding: 10px 12px;
  border: 1px solid var(--border);
}
.confusion th { background: #fafaf6; }
.confusion td.ok { background: #eaf7ee; font-weight: 700; color: var(--ok); }
.confusion td.ko { background: #fdecea; font-weight: 700; color: var(--ko); }