/* CIS-4880 Review Dashboard — shared styles */

:root {
  --bg: #0b1220;
  --surface: #131c2f;
  --surface-2: #1b2740;
  --border: #2a3550;
  --text: #e8eefc;
  --muted: #9fb0d0;
  --accent: #5b8cff;
  --accent-2: #7aa2ff;
  --good: #34d399;
  --good-bg: rgba(52, 211, 153, 0.12);
  --bad: #f87171;
  --bad-bg: rgba(248, 113, 113, 0.12);
  --warn: #fbbf24;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

/* Make the HTML `hidden` attribute authoritative even when an element also has a
   class that sets `display` (e.g. .policy, .grid, .btn). Without this, those
   class rules override `[hidden]` and the element stays visible. */
[hidden] {
  display: none !important;
}

html {
  color-scheme: dark;
}

body {
  margin: 0;
  background: radial-gradient(1200px 600px at 70% -10%, #16223d 0%, var(--bg) 55%) fixed;
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  min-height: 100vh;
}

a {
  color: var(--accent-2);
}

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 16px;
  max-width: 960px;
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.brand .tag {
  font-size: 12px;
  font-weight: 600;
  color: #0b1220;
  background: var(--accent);
  padding: 2px 8px;
  border-radius: 999px;
}

.userbox {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 14px;
}

h1 {
  font-size: clamp(24px, 4vw, 34px);
  margin: 8px 0 4px;
}

.sub {
  color: var(--muted);
  margin: 0 0 24px;
}

/* ---- Cards ---- */

.card {
  background: linear-gradient(180deg, var(--surface) 0%, var(--surface-2) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.chapter {
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
}

.chapter .num {
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.chapter .title {
  font-size: 17px;
  font-weight: 650;
  line-height: 1.35;
  margin: 0;
}

.chapter .foot {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.badge {
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  white-space: nowrap;
}

.badge.locked {
  color: var(--warn);
  border-color: rgba(251, 191, 36, 0.4);
  background: rgba(251, 191, 36, 0.1);
}

.badge.open {
  color: var(--good);
  border-color: rgba(52, 211, 153, 0.4);
  background: var(--good-bg);
}

.badge.score {
  color: var(--accent-2);
  border-color: rgba(122, 162, 255, 0.4);
  background: rgba(122, 162, 255, 0.1);
}

/* ---- Buttons & inputs ---- */

.btn {
  appearance: none;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #0b1220;
  font: inherit;
  font-weight: 700;
  padding: 10px 16px;
  border-radius: 10px;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: transform 0.05s ease, filter 0.15s ease;
}

.btn:hover {
  filter: brightness(1.07);
}

.btn:active {
  transform: translateY(1px);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn.ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn.small {
  padding: 6px 12px;
  font-size: 14px;
}

label.field {
  display: block;
  margin: 14px 0 0;
  font-size: 14px;
  color: var(--muted);
}

input[type="email"],
input[type="password"],
input[type="text"] {
  width: 100%;
  margin-top: 6px;
  padding: 11px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0e1626;
  color: var(--text);
  font: inherit;
}

input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

/* ---- Messages ---- */

.msg {
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 14px;
  display: none;
}

.msg.show {
  display: block;
}

.msg.error {
  color: #fecaca;
  background: var(--bad-bg);
  border: 1px solid rgba(248, 113, 113, 0.4);
}

.msg.ok {
  color: #bbf7d0;
  background: var(--good-bg);
  border: 1px solid rgba(52, 211, 153, 0.4);
}

.msg.info {
  color: #cfe0ff;
  background: rgba(91, 140, 255, 0.1);
  border: 1px solid rgba(91, 140, 255, 0.35);
}

.muted {
  color: var(--muted);
}

.center {
  text-align: center;
}

/* ---- Password policy checklist ---- */

.policy {
  list-style: none;
  padding: 0;
  margin: 10px 0 0;
  font-size: 13px;
  color: var(--muted);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px 12px;
}

.policy li::before {
  content: "○ ";
  color: var(--muted);
}

.policy li.met {
  color: var(--good);
}

.policy li.met::before {
  content: "● ";
  color: var(--good);
}

/* ---- Quiz ---- */

.q {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
  margin: 14px 0;
  background: var(--surface);
}

.q .qnum {
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.q .stem {
  font-weight: 600;
  margin: 6px 0 12px;
}

.opt {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  margin: 8px 0;
  cursor: pointer;
  transition: border-color 0.12s ease, background 0.12s ease;
}

.opt:hover {
  border-color: var(--accent);
}

.opt input {
  margin-top: 3px;
}

.opt.correct {
  border-color: var(--good);
  background: var(--good-bg);
}

.opt.incorrect {
  border-color: var(--bad);
  background: var(--bad-bg);
}

.opt.locked {
  cursor: default;
}

.opt.locked:hover {
  border-color: var(--border);
}

.opt.correct.locked:hover {
  border-color: var(--good);
}

.explain {
  margin-top: 10px;
  font-size: 14px;
  color: var(--muted);
  border-left: 3px solid var(--border);
  padding-left: 12px;
  display: none;
}

.explain.show {
  display: block;
}

.progress {
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(11, 18, 32, 0.85);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.bar {
  flex: 1;
  height: 8px;
  border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden;
}

.bar > span {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent), var(--good));
  transition: width 0.25s ease;
}

/* ---- Matching activity ---- */

.match {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 6px;
}

.term-bank {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px;
  border: 1px dashed var(--border);
  border-radius: 12px;
  min-height: 52px;
  background: rgba(255, 255, 255, 0.02);
}

.chip {
  font: inherit;
  font-weight: 650;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--accent);
  border-radius: 999px;
  padding: 8px 14px;
  cursor: grab;
  user-select: none;
  transition: transform 0.05s ease, box-shadow 0.12s ease, background 0.12s ease;
}

.chip:hover {
  box-shadow: 0 0 0 2px rgba(91, 140, 255, 0.35);
}

.chip.selected {
  background: var(--accent);
  color: #0b1220;
}

.chip.dragging {
  opacity: 0.5;
}

.chip.in-slot {
  cursor: grab;
}

.chip:disabled {
  cursor: default;
}

.def-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.def-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 12px;
  align-items: stretch;
}

@media (max-width: 560px) {
  .def-row {
    grid-template-columns: 1fr;
  }
}

.slot {
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 8px;
  min-height: 48px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.12s ease, background 0.12s ease;
}

.slot.target {
  border-color: var(--accent);
  background: rgba(91, 140, 255, 0.08);
}

.slot.over {
  border-color: var(--accent-2);
  background: rgba(91, 140, 255, 0.16);
}

.slot.filled {
  border-style: solid;
}

.slot-hint {
  color: var(--muted);
  font-size: 12px;
}

.slot.correct {
  border-color: var(--good);
  background: var(--good-bg);
}

.slot.incorrect {
  border-color: var(--bad);
  background: var(--bad-bg);
}

.slot .answer-tag {
  margin-left: 8px;
  font-size: 12px;
  font-weight: 700;
  color: var(--good);
}

.def-text {
  display: flex;
  align-items: center;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  font-size: 14px;
}

.result {
  text-align: center;
  padding: 26px;
}

.result .score {
  font-size: 48px;
  font-weight: 800;
  line-height: 1;
  margin: 8px 0;
}

.divider {
  height: 1px;
  background: var(--border);
  margin: 20px 0;
  border: 0;
}

.row {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.spread {
  justify-content: space-between;
}