/* ============================================================
   Exam Platform — Main Stylesheet
   Aesthetic: Aviation/industrial — dark navy, amber accents
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@400;600;700&family=Barlow:wght@300;400;500;600&display=swap');

:root {
  --navy:      #0d1b2a;
  --navy-mid:  #152336;
  --navy-light:#1e3a52;
  --amber:     #f0a500;
  --amber-dim: #c8851a;
  --white:     #f0f4f8;
  --muted:     #8a9bb0;
  --danger:    #e05252;
  --success:   #3dba7b;
  --border:    rgba(240,165,0,.18);
  --radius:    6px;
  --shadow:    0 4px 24px rgba(0,0,0,.35);
  --font-head: 'Barlow Condensed', sans-serif;
  --font-body: 'Barlow', sans-serif;
}

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

body {
  font-family: var(--font-body);
  background: var(--navy);
  color: var(--white);
  min-height: 100vh;
  font-size: 15px;
  line-height: 1.6;
}

/* ── Typography ─────────────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: var(--font-head);
  letter-spacing: .03em;
  line-height: 1.2;
}
h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 700; }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 600; }
h3 { font-size: 1.25rem; font-weight: 600; }

a { color: var(--amber); text-decoration: none; }
a:hover { color: var(--white); }

/* ── Layout ─────────────────────────────────────────────── */
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.container--narrow { max-width: 700px; margin: 0 auto; padding: 0 24px; }

/* ── Top Nav ─────────────────────────────────────────────── */
.topnav {
  background: var(--navy-mid);
  border-bottom: 2px solid var(--amber);
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 58px;
  position: sticky; top: 0; z-index: 100;
}
.topnav__logo {
  font-family: var(--font-head);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--amber);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.topnav__logo span { color: var(--white); }
.topnav__links { display: flex; gap: 6px; align-items: center; }
.topnav__links a {
  color: var(--muted);
  font-size: .9rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--radius);
  transition: all .2s;
}
.topnav__links a:hover { color: var(--white); background: var(--navy-light); }
.topnav__links a.active { color: var(--amber); }

/* ── Cards ───────────────────────────────────────────────── */
.card {
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}
.card + .card { margin-top: 20px; }
.card__header {
  border-bottom: 1px solid var(--border);
  padding-bottom: 14px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.card__title { color: var(--amber); }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 20px;
  border-radius: var(--radius);
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: .04em;
  cursor: pointer;
  border: none;
  transition: all .2s;
  text-transform: uppercase;
  white-space: nowrap;
}
.btn--primary { background: var(--amber); color: var(--navy); }
.btn--primary:hover { background: #ffc030; color: var(--navy); }
.btn--secondary { background: transparent; border: 1.5px solid var(--amber); color: var(--amber); }
.btn--secondary:hover { background: var(--amber); color: var(--navy); }
.btn--danger { background: var(--danger); color: #fff; }
.btn--danger:hover { background: #c03a3a; color:#fff; }
.btn--success { background: var(--success); color: #fff; }
.btn--ghost { background: var(--navy-light); color: var(--muted); }
.btn--ghost:hover { color: var(--white); }
.btn--sm { padding: 5px 12px; font-size: .85rem; }
.btn--lg { padding: 13px 32px; font-size: 1.15rem; }
.btn[disabled] { opacity: .45; cursor: not-allowed; }

/* ── Forms ───────────────────────────────────────────────── */
.form-group { margin-bottom: 18px; }
.form-label {
  display: block;
  font-weight: 500;
  color: var(--muted);
  font-size: .85rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 6px;
}
.form-control {
  width: 100%;
  background: var(--navy);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  color: var(--white);
  padding: 10px 14px;
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color .2s;
}
.form-control:focus { outline: none; border-color: var(--amber); }
.form-control::placeholder { color: var(--muted); opacity: .7; }
textarea.form-control { min-height: 90px; resize: vertical; }
select.form-control option { background: var(--navy-mid); }

/* Checkboxes / Radios */
.check-group { display: flex; flex-direction: column; gap: 8px; }
.check-item {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  padding: 8px 12px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: all .15s;
}
.check-item:hover { background: var(--navy-light); border-color: var(--border); }
.check-item input[type=radio],
.check-item input[type=checkbox] {
  accent-color: var(--amber);
  width: 17px; height: 17px;
  flex-shrink: 0;
}
.check-item.selected { border-color: var(--amber); background: rgba(240,165,0,.08); }

/* ── Grid Table (for grid questions) ────────────────────── */
.grid-table { width: 100%; border-collapse: collapse; }
.grid-table th, .grid-table td {
  padding: 10px 14px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.grid-table th { color: var(--amber); font-family: var(--font-head); font-size: .95rem; }
.grid-table td:first-child { text-align: left; }
.grid-table tr:last-child td { border-bottom: none; }
.grid-table input { accent-color: var(--amber); width: 18px; height: 18px; }

/* ── Alerts / Flash ──────────────────────────────────────── */
.alert {
  padding: 12px 18px;
  border-radius: var(--radius);
  margin-bottom: 18px;
  font-weight: 500;
  border-left: 4px solid;
}
.alert--success { background: rgba(61,186,123,.12); border-color: var(--success); color: var(--success); }
.alert--error   { background: rgba(224,82,82,.12);  border-color: var(--danger);  color: var(--danger); }
.alert--info    { background: rgba(240,165,0,.10);  border-color: var(--amber);   color: var(--amber); }

/* ── Table ───────────────────────────────────────────────── */
.table { width: 100%; border-collapse: collapse; }
.table th {
  font-family: var(--font-head);
  font-size: .85rem;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--amber);
  padding: 10px 14px;
  border-bottom: 2px solid var(--border);
  text-align: left;
}
.table td { padding: 11px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background: var(--navy-light); }

/* ── Badge ───────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 20px;
  font-size: .78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
}
.badge--pass    { background: rgba(61,186,123,.2);  color: var(--success); }
.badge--fail    { background: rgba(224,82,82,.2);   color: var(--danger); }
.badge--pending { background: rgba(240,165,0,.15);  color: var(--amber); }
.badge--active  { background: rgba(61,186,123,.15); color: var(--success); }
.badge--inactive{ background: rgba(138,155,176,.15);color: var(--muted); }

/* ── Page header ─────────────────────────────────────────── */
.page-header {
  padding: 36px 0 28px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 32px;
}
.page-header__sub { color: var(--muted); margin-top: 4px; }

/* ── Exam timer ──────────────────────────────────────────── */
.timer-bar {
  position: sticky; top: 58px; z-index: 90;
  background: var(--navy-mid);
  border-bottom: 1px solid var(--border);
  padding: 8px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-head);
}
.timer-bar__time { font-size: 1.4rem; font-weight: 700; color: var(--amber); letter-spacing: .1em; }
.timer-bar__time.warning { color: var(--danger); animation: pulse 1s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.5} }

/* ── Progress bar ────────────────────────────────────────── */
.progress { background: var(--navy-light); border-radius: 20px; height: 6px; overflow: hidden; margin: 8px 0; }
.progress__fill { height: 100%; background: var(--amber); border-radius: 20px; transition: width .4s; }

/* ── Question card ───────────────────────────────────────── */
.question-card {
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}
.question-card__num {
  font-family: var(--font-head);
  color: var(--amber);
  font-size: .85rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  margin-bottom: 8px;
}
.question-card__text { font-size: 1.05rem; margin-bottom: 16px; line-height: 1.5; }
.required-star { color: var(--danger); margin-left: 3px; }

/* ── Section divider ─────────────────────────────────────── */
.section-divider {
  border-left: 3px solid var(--amber);
  padding: 10px 18px;
  background: rgba(240,165,0,.06);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 32px 0 20px;
}
.section-divider h3 { color: var(--amber); }
.section-divider p  { color: var(--muted); font-size: .9rem; margin-top: 4px; }

/* ── Score display ───────────────────────────────────────── */
.score-circle {
  width: 140px; height: 140px;
  border-radius: 50%;
  border: 6px solid var(--amber);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  margin: 0 auto 20px;
}
.score-circle__pct { font-family: var(--font-head); font-size: 2.4rem; font-weight: 700; color: var(--amber); }
.score-circle__label { font-size: .8rem; color: var(--muted); text-transform: uppercase; }
.score-circle.pass { border-color: var(--success); }
.score-circle.pass .score-circle__pct { color: var(--success); }
.score-circle.fail { border-color: var(--danger); }
.score-circle.fail .score-circle__pct { color: var(--danger); }

/* ── Drag-drop zones (form builder) ─────────────────────── */
.builder-canvas { min-height: 200px; }
.builder-question {
  background: var(--navy);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
  cursor: grab;
  position: relative;
}
.builder-question:active { cursor: grabbing; }
.builder-question.dragging { opacity: .4; }
.builder-question__handle { color: var(--muted); margin-right: 10px; cursor: grab; }
.builder-question__actions { display: flex; gap: 6px; position: absolute; top: 12px; right: 12px; }

/* ── Sidebar layout (admin) ──────────────────────────────── */
.admin-layout { display: flex; min-height: calc(100vh - 58px); }
.sidebar {
  width: 220px;
  background: var(--navy-mid);
  border-right: 1px solid var(--border);
  padding: 24px 0;
  flex-shrink: 0;
}
.sidebar__item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  color: var(--muted);
  font-weight: 500;
  transition: all .2s;
  border-left: 3px solid transparent;
}
.sidebar__item:hover { color: var(--white); background: var(--navy-light); }
.sidebar__item.active { color: var(--amber); border-left-color: var(--amber); background: rgba(240,165,0,.06); }
.sidebar__section {
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--muted);
  padding: 16px 20px 6px;
}
.main-content { flex: 1; padding: 32px; overflow-x: auto; }

/* ── Import dropzone ─────────────────────────────────────── */
.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  cursor: pointer;
  transition: all .2s;
  color: var(--muted);
}
.dropzone:hover, .dropzone.dragover { border-color: var(--amber); color: var(--amber); background: rgba(240,165,0,.05); }
.dropzone__icon { font-size: 2.5rem; margin-bottom: 10px; }

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 768px) {
  .admin-layout { flex-direction: column; }
  .sidebar { width: 100%; border-right: none; border-bottom: 1px solid var(--border); padding: 10px 0; }
  .main-content { padding: 20px; }
  .topnav__links a { padding: 6px 8px; font-size: .82rem; }
  .card { padding: 18px; }
}

/* ── Utilities ───────────────────────────────────────────── */
.mt-1{margin-top:8px} .mt-2{margin-top:16px} .mt-3{margin-top:24px} .mt-4{margin-top:32px}
.mb-1{margin-bottom:8px} .mb-2{margin-bottom:16px} .mb-3{margin-bottom:24px}
.flex{display:flex} .flex-between{justify-content:space-between} .flex-center{align-items:center}
.gap-1{gap:8px} .gap-2{gap:16px} .text-muted{color:var(--muted)} .text-amber{color:var(--amber)}
.text-success{color:var(--success)} .text-danger{color:var(--danger)}
.text-right{text-align:right} .text-center{text-align:center}
.w-100{width:100%} .hidden{display:none}