/* ============================================================
   NPU Poll 2026 - Main Stylesheet
   Sarabun / Kanit Font, Premium Dark-mode design
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Sarabun:wght@300;400;500;600;700&family=Kanit:wght@300;400;500;600;700&display=swap');

:root {
  --primary:     #4f46e5;
  --primary-d:   #3730a3;
  --primary-l:   #818cf8;
  --accent:      #06b6d4;
  --success:     #10b981;
  --warning:     #f59e0b;
  --danger:      #ef4444;
  --bg:          #0f172a;
  --bg-card:     rgba(255,255,255,0.05);
  --bg-card2:    rgba(255,255,255,0.08);
  --border:      rgba(255,255,255,0.12);
  --text:        #e2e8f0;
  --text-muted:  #94a3b8;
  --text-head:   #f1f5f9;
  --radius:      14px;
  --radius-sm:   8px;
  --shadow:      0 8px 32px rgba(0,0,0,0.4);
  --transition:  .25s cubic-bezier(.4,0,.2,1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Sarabun', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.7;
  background-image:
    radial-gradient(ellipse at 20% 20%, rgba(79,70,229,.18) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 80%, rgba(6,182,212,.12) 0%, transparent 60%);
}

/* ─── HEADER ─── */
.site-header {
  background: linear-gradient(135deg, var(--primary-d) 0%, var(--primary) 50%, var(--accent) 100%);
  padding: 0;
  box-shadow: 0 4px 24px rgba(79,70,229,.5);
  position: relative;
  overflow: hidden;
}
.site-header::before {
  content:'';
  position: absolute;
  inset:0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.header-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 28px 24px 24px;
  position: relative;
  text-align: center;
}
.header-logo {
  width: 70px;
  height: 70px;
  background: rgba(255,255,255,.15);
  backdrop-filter: blur(4px);
  border-radius: 50%;
  margin: 0 auto 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  border: 2px solid rgba(255,255,255,.3);
}
.header-title {
  font-family: 'Kanit', sans-serif;
  font-size: clamp(1.1rem, 3.5vw, 1.5rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.4;
  text-shadow: 0 2px 8px rgba(0,0,0,.25);
}
.header-subtitle {
  font-size: .95rem;
  color: rgba(255,255,255,.8);
  margin-top: 6px;
}

/* ─── CONTAINER ─── */
.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 32px 16px 64px;
}

/* ─── CARD ─── */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
  transition: border-color var(--transition);
}
.card:hover { border-color: rgba(79,70,229,.4); }

.card-title {
  font-family: 'Kanit', sans-serif;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--primary-l);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.card-title .icon {
  width: 34px; height: 34px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

/* ─── PROGRESS BAR ─── */
.progress-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 28px;
  margin-bottom: 28px;
}
.progress-steps {
  display: flex;
  align-items: center;
  gap: 0;
  position: relative;
}
.progress-step {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  position: relative;
  z-index: 1;
}
.progress-step:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 18px;
  left: 50%;
  width: 100%;
  height: 2px;
  background: var(--border);
  z-index: 0;
  transition: background var(--transition);
}
.progress-step.done:not(:last-child)::after { background: var(--primary); }
.step-dot {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .85rem;
  font-weight: 700;
  color: var(--text-muted);
  transition: all var(--transition);
  position: relative;
  z-index: 1;
}
.progress-step.active .step-dot {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 0 16px rgba(79,70,229,.6);
}
.progress-step.done .step-dot {
  background: var(--success);
  border-color: var(--success);
  color: #fff;
}
.step-label {
  font-size: .75rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.3;
  max-width: 80px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.progress-step.active .step-label { color: var(--primary-l); font-weight: 600; }

/* ─── FORM ELEMENTS ─── */
.form-group { margin-bottom: 20px; }
.form-label {
  display: block;
  font-size: .95rem;
  font-weight: 600;
  color: var(--text-head);
  margin-bottom: 10px;
}
.form-label .req { color: var(--danger); margin-left: 3px; }

.form-control {
  width: 100%;
  background: rgba(255,255,255,.06);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  color: var(--text);
  font-family: 'Sarabun', sans-serif;
  font-size: .97rem;
  transition: all var(--transition);
  appearance: none;
}
.form-control:focus {
  outline: none;
  border-color: var(--primary-l);
  background: rgba(79,70,229,.1);
  box-shadow: 0 0 0 3px rgba(79,70,229,.2);
}
.form-control option { background: #1e293b; color: var(--text); }

/* Radio & Checkbox groups */
.radio-group, .check-group {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 10px;
}
.radio-label, .check-label {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: rgba(255,255,255,.04);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  font-size: .93rem;
}
.radio-label:hover, .check-label:hover {
  border-color: var(--primary-l);
  background: rgba(79,70,229,.12);
}
.radio-label input, .check-label input { accent-color: var(--primary-l); cursor: pointer; }
.radio-label.checked, .check-label.checked {
  border-color: var(--primary);
  background: rgba(79,70,229,.18);
  color: #fff;
}

/* Purpose checkboxes (2 col) */
.check-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
@media (max-width: 600px) { .check-grid { grid-template-columns: 1fr; } }

/* ─── RATING SCALE (1-5) ─── */
.rating-table { width: 100%; border-collapse: collapse; }
.rating-table th, .rating-table td {
  padding: 10px 6px;
  text-align: center;
  border-bottom: 1px solid var(--border);
  font-size: .9rem;
}
.rating-table th {
  font-family: 'Kanit', sans-serif;
  color: var(--text-muted);
  font-size: .82rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  font-weight: 500;
}
.rating-table td:first-child { text-align: left; color: var(--text); font-size: .94rem; padding-left: 4px; }
.rating-table tr:last-child td { border-bottom: none; }
.rating-table tr:hover td { background: rgba(255,255,255,.03); }
.rating-radio { accent-color: var(--primary-l); transform: scale(1.25); cursor: pointer; }
.rating-head-wrap {
  display: flex;
  justify-content: space-between;
  margin-top: -8px;
  margin-bottom: 8px;
  font-size: .78rem;
  color: var(--text-muted);
  padding: 0 2px;
}

/* ─── BUTTONS ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: 'Sarabun', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  box-shadow: 0 4px 16px rgba(79,70,229,.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(79,70,229,.5);
}
.btn-secondary {
  background: rgba(255,255,255,.08);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: rgba(255,255,255,.14); }

.form-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 28px;
  gap: 12px;
}

/* ─── STEPS ─── */
.form-step { display: none; }
.form-step.active { display: block; animation: fadeIn .35s ease; }
@keyframes fadeIn { from { opacity:0; transform:translateY(12px); } to { opacity:1; transform:translateY(0); } }

/* ─── ALERT ─── */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: .92rem;
  margin-bottom: 20px;
  display: none;
}
.alert-danger {
  background: rgba(239,68,68,.15);
  border: 1px solid rgba(239,68,68,.35);
  color: #fca5a5;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

/* ─── TEXTAREA ─── */
textarea.form-control { min-height: 110px; resize: vertical; }

/* ─── ADMIN SPECIFIC ─── */
.admin-header {
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 60%, #1e40af 100%);
  padding: 18px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 4px 24px rgba(0,0,0,.4);
}
.admin-header h1 { font-family:'Kanit',sans-serif; font-size:1.1rem; color:#fff; font-weight:600; }
.admin-nav a {
  color: rgba(255,255,255,.75);
  text-decoration:none;
  margin-left:18px;
  font-size:.9rem;
  transition:color var(--transition);
}
.admin-nav a:hover { color:#fff; }

.stat-cards { display:grid; grid-template-columns: repeat(auto-fill,minmax(180px,1fr)); gap:16px; margin-bottom:24px; }
.stat-card {
  background: var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:20px;
  text-align:center;
  transition:all var(--transition);
}
.stat-card:hover { border-color:var(--primary); transform:translateY(-2px); }
.stat-card .stat-value { font-family:'Kanit',sans-serif; font-size:2rem; font-weight:700; color:var(--primary-l); }
.stat-card .stat-label { font-size:.82rem; color:var(--text-muted); margin-top:4px; }

.chart-wrap {
  background: var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:24px;
  margin-bottom:24px;
}
.chart-title { font-family:'Kanit',sans-serif; font-size:1rem; font-weight:600; color:var(--text-head); margin-bottom:16px; }

/* DATA TABLE */
.data-table-wrap { overflow-x:auto; }
.data-table { width:100%; border-collapse:collapse; font-size:.88rem; }
.data-table th {
  background:rgba(79,70,229,.2);
  color:var(--primary-l);
  font-family:'Kanit',sans-serif;
  font-weight:500;
  padding:10px 12px;
  text-align:left;
  white-space:nowrap;
}
.data-table td { padding:9px 12px; border-bottom:1px solid var(--border); vertical-align:middle; }
.data-table tr:hover td { background:rgba(255,255,255,.03); }

/* badge */
.badge {
  display:inline-block; padding:3px 10px; border-radius:999px; font-size:.78rem; font-weight:600;
}
.badge-blue { background:rgba(79,70,229,.25); color:var(--primary-l); }
.badge-cyan { background:rgba(6,182,212,.25); color:#67e8f9; }
.badge-green { background:rgba(16,185,129,.25); color:#6ee7b7; }
.badge-orange { background:rgba(245,158,11,.25); color:#fcd34d; }

/* login card */
.login-wrap {
  min-height:100vh; display:flex; align-items:center; justify-content:center; padding:20px;
}
.login-card {
  width:100%; max-width:400px;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:36px;
  box-shadow:var(--shadow);
}
.login-title { font-family:'Kanit',sans-serif; font-size:1.4rem; font-weight:700; text-align:center; color:var(--text-head); margin-bottom:6px; }
.login-sub { text-align:center; color:var(--text-muted); font-size:.9rem; margin-bottom:24px; }

/* filter bar */
.filter-bar { display:flex; gap:10px; flex-wrap:wrap; margin-bottom:16px; }
.filter-bar select, .filter-bar input { flex:1; min-width:150px; }

/* Pagination */
.pagination { display:flex; gap:6px; justify-content:center; margin-top:16px; }
.page-btn {
  padding:6px 14px; border-radius:var(--radius-sm);
  background:var(--bg-card); border:1px solid var(--border);
  color:var(--text); cursor:pointer; font-size:.85rem; transition:all var(--transition);
}
.page-btn:hover, .page-btn.active { background:var(--primary); border-color:var(--primary); color:#fff; }

/* Responsive */
@media (max-width:640px) {
  .card { padding:20px 16px; }
  .form-nav { flex-direction:column; align-items:stretch; }
  .btn { width:100%; justify-content:center; }
  .progress-steps { gap:0; }
  .step-label { display:none; }
}