/* assets/css/style.css — Plickers v2 */
@import url('https://fonts.googleapis.com/css2?family=Sarabun:wght@400;600;700;900&display=swap');

:root {
  --bg:       #0f172a;
  --bg2:      #1e293b;
  --bg3:      #334155;
  --primary:  #3b82f6;
  --success:  #22c55e;
  --danger:   #ef4444;
  --warning:  #f59e0b;
  --text:     #f1f5f9;
  --muted:    #94a3b8;
  --border:   #334155;
  --radius:   12px;
  --ans-a:    #ef4444;
  --ans-b:    #3b82f6;
  --ans-c:    #22c55e;
  --ans-d:    #f59e0b;
}

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

body {
  font-family: 'Sarabun', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.5;
}

/* ── layout ── */
.sidebar {
  width: 220px; min-height: 100vh;
  overflow: hidden;
  transition: width .22s ease;
  background: var(--bg2);
  position: fixed; top: 0; left: 0;
  display: flex; flex-direction: column;
  border-right: 1px solid var(--border);
}
.sidebar .logo {
  padding: 20px;
  font-size: 1.2rem; font-weight: 900;
  color: var(--primary);
  border-bottom: 1px solid var(--border);
}
.sidebar .logo span { color: var(--text); font-weight: 400; font-size: .8rem; display: block; }
.sidebar nav { flex: 1; padding: 12px 0; }
.sidebar nav a {
  display: flex; align-items: center; gap: 10px;
  color: var(--muted); text-decoration: none;
  padding: 11px 20px; font-size: .92rem;
  transition: .15s;
}
.sidebar nav a:hover, .sidebar nav a.active {
  color: var(--text); background: var(--bg3);
}
.sidebar nav a.active { border-left: 3px solid var(--primary); }
.sidebar .ver {
  padding: 12px 20px;
  font-size: .75rem; color: var(--muted);
  border-top: 1px solid var(--border);
}

.main { margin-left: 220px; padding: 28px; min-height: 100vh; transition: margin-left .22s ease; }
.topbar {
  display: flex; align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.topbar h1 { font-size: 1.4rem; font-weight: 700; }

/* ── card ── */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px; margin-bottom: 18px;
}
.card-header {
  display: flex; align-items: center;
  justify-content: space-between; margin-bottom: 16px;
}
.card-header h2 { font-size: 1rem; font-weight: 700; }

/* ── buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: 8px; border: none;
  cursor: pointer; font-family: inherit;
  font-size: .88rem; font-weight: 600;
  transition: .15s; text-decoration: none;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: #2563eb; }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #16a34a; }
.btn-danger  { background: var(--danger);  color: #fff; }
.btn-danger:hover  { background: #dc2626; }
.btn-warning { background: var(--warning); color: #1e293b; }
.btn-outline {
  background: transparent; color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-sm  { padding: 5px 11px; font-size: .8rem; }
.btn-lg  { padding: 12px 26px; font-size: 1rem; }
.btn-xl  { padding: 18px 36px; font-size: 1.15rem; }

/* ── form ── */
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: .85rem; font-weight: 600; margin-bottom: 5px; color: var(--muted); }
.form-control {
  width: 100%; padding: 8px 12px;
  background: var(--bg3); border: 1.5px solid var(--border);
  border-radius: 8px; color: var(--text);
  font-family: inherit; font-size: .92rem;
  transition: border .2s;
}
.form-control:focus { outline: none; border-color: var(--primary); }
select.form-control option { background: var(--bg2); }

/* ── table ── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); font-size: .88rem; }
th { color: var(--muted); font-size: .8rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; }
tr:hover td { background: rgba(255,255,255,.03); }

/* ── badge ── */
.badge { display: inline-block; padding: 3px 9px; border-radius: 99px; font-size: .75rem; font-weight: 700; }
.badge-success { background: rgba(34,197,94,.15); color: #4ade80; }
.badge-danger  { background: rgba(239,68,68,.15);  color: #f87171; }
.badge-warning { background: rgba(245,158,11,.15); color: #fbbf24; }
.badge-info    { background: rgba(59,130,246,.15); color: #60a5fa; }
.badge-gray    { background: rgba(148,163,184,.15);color: var(--muted); }

/* ── alert ── */
.alert { padding: 11px 16px; border-radius: 8px; margin-bottom: 14px; font-size: .88rem; }
.alert-success { background: rgba(34,197,94,.1);  border: 1px solid rgba(34,197,94,.3);  color: #4ade80; }
.alert-danger  { background: rgba(239,68,68,.1);  border: 1px solid rgba(239,68,68,.3);  color: #f87171; }

/* ── stats cards ── */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px,1fr)); gap: 14px; margin-bottom: 20px; }
.stat-card { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
.stat-card .num { font-size: 2rem; font-weight: 900; }
.stat-card .lab { font-size: .8rem; color: var(--muted); margin-top: 2px; }

/* ── scanner page ── */
.scanner-wrap { max-width: 700px; margin: 0 auto; }

#video-container {
  position: relative;
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
  width: 100%;
}
#video-container video,
#video-container canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
}
#overlay-canvas { pointer-events: none; }

.scan-status {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; border-radius: 8px;
  font-size: .9rem; font-weight: 600;
  margin-top: 12px;
}
.scan-status.scanning { background: rgba(59,130,246,.15); border: 1px solid rgba(59,130,246,.3); color: #60a5fa; }
.scan-status.detected { background: rgba(34,197,94,.15);  border: 1px solid rgba(34,197,94,.3);  color: #4ade80; }
.scan-status.error    { background: rgba(239,68,68,.15);  border: 1px solid rgba(239,68,68,.3);  color: #f87171; }
.scan-status.paused   { background: rgba(148,163,184,.15);border: 1px solid rgba(148,163,184,.3);color: var(--muted); }

.pulse { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.pulse.blue   { background: var(--primary);  animation: pulse-anim 1s infinite; }
.pulse.green  { background: var(--success);  animation: pulse-anim .5s infinite; }
.pulse.red    { background: var(--danger);   animation: none; }
.pulse.gray   { background: var(--muted);    animation: none; }
@keyframes pulse-anim { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.4;transform:scale(.7)} }

/* result list */
.result-list { max-height: 320px; overflow-y: auto; }
.result-row {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 0; border-bottom: 1px solid var(--border);
  font-size: .88rem;
}
.result-row:last-child { border: none; }
.ans-pill {
  width: 34px; height: 34px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 900; font-size: 1rem; color: #fff; flex-shrink: 0;
}
.ans-A { background: var(--ans-a); }
.ans-B { background: var(--ans-b); }
.ans-C { background: var(--ans-c); }
.ans-D { background: var(--ans-d); }

/* question tabs */
.q-tabs { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.q-tab {
  padding: 6px 13px; border-radius: 6px;
  border: 1.5px solid var(--border);
  background: transparent; color: var(--muted);
  cursor: pointer; font-family: inherit; font-size: .82rem; font-weight: 600;
  transition: .15s;
}
.q-tab:hover { border-color: var(--primary); color: var(--primary); }
.q-tab.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.q-tab.done   { background: rgba(34,197,94,.15); border-color: var(--success); color: #4ade80; }

/* progress */
.progress { height: 6px; background: var(--bg3); border-radius: 99px; margin-bottom: 16px; overflow: hidden; }
.progress-bar { height: 100%; background: var(--primary); border-radius: 99px; transition: width .5s; }

/* answer grid (4 buttons) */
.ans-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 10px; }
.ans-btn {
  padding: 18px; border-radius: 10px; border: none;
  font-size: 1.8rem; font-weight: 900; color: #fff;
  cursor: pointer; transition: transform .1s, opacity .2s;
}
.ans-btn:active { transform: scale(.95); }
.ans-btn.dimmed { opacity: .3; }

/* display (projector) */
.projector {
  min-height: 100vh;
  background: #0f172a;
  padding: 40px;
  display: flex; flex-direction: column;
}
.proj-q-text { font-size: 2.4rem; font-weight: 700; line-height: 1.4; margin-bottom: 28px; }
.proj-choices { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.proj-choice {
  border-radius: var(--radius); padding: 20px 24px;
  font-size: 1.5rem; font-weight: 600;
  display: flex; align-items: center; gap: 14px;
}
.proj-choice .lbl {
  width: 46px; height: 46px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; font-weight: 900; color: #fff; flex-shrink: 0;
}
.ch-A { background: rgba(239,68,68,.15); border: 2px solid #ef4444; } .ch-A .lbl { background: #ef4444; }
.ch-B { background: rgba(59,130,246,.15); border: 2px solid #3b82f6; } .ch-B .lbl { background: #3b82f6; }
.ch-C { background: rgba(34,197,94,.15); border: 2px solid #22c55e; } .ch-C .lbl { background: #22c55e; }
.ch-D { background: rgba(245,158,11,.15); border: 2px solid #f59e0b; } .ch-D .lbl { background: #f59e0b; }
.ch-correct { box-shadow: 0 0 0 4px #fff; }

/* result bars (projector) */
.rbar-wrap { margin-top: 24px; }
.rbar { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.rbar .lbl  { width: 30px; font-weight: 900; font-size: 1.1rem; }
.rbar-track { flex: 1; background: rgba(255,255,255,.1); border-radius: 99px; height: 30px; overflow: hidden; }
.rbar-fill  {
  height: 100%; border-radius: 99px;
  display: flex; align-items: center; padding: 0 12px;
  font-size: .88rem; font-weight: 700; color: #fff;
  transition: width 1s ease; white-space: nowrap; min-width: 2px;
}
.rb-A{background:#ef4444;} .rb-B{background:#3b82f6;} .rb-C{background:#22c55e;} .rb-D{background:#f59e0b;}

/* login */
.login-wrap { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-box { background: var(--bg2); border: 1px solid var(--border); border-radius: 16px; padding: 36px; width: 360px; }
.login-box h1 { text-align: center; margin-bottom: 24px; font-size: 1.5rem; font-weight: 900; }

/* plicker card print */
.pcard { width: 180px; height: 180px; border: 2px solid #000; background: #fff; border-radius: 8px; padding: 8px; page-break-inside: avoid; }
.pcard-qr { width: 100%; aspect-ratio: 1; }
.pcard-name { text-align: center; font-size: 10px; font-weight: 700; color: #000; margin-top: 4px; }
.pcard-abcd { display: grid; grid-template-columns: 1fr 1fr; gap: 3px; margin-top: 4px; }
.pcard-abcd span { border-radius: 3px; padding: 2px; text-align: center; font-weight: 900; font-size: 13px; color: #fff; }

@media print {
  .sidebar, .topbar, .no-print { display: none !important; }
  .main { margin: 0; padding: 8px; }
  body { background: #fff !important; color: #000 !important; }
}
@media (max-width:768px) {
  .sidebar { display: none; }
  .main { margin: 0; padding: 12px; }
  .proj-choices { grid-template-columns: 1fr; }
}