:root {
  --navy: #0d1b2a;
  --navy-light: #1b2d42;
  --navy-mid: #162032;
  --gold: #c9a227;
  --gold-light: #e8c04a;
  --red: #8b1a1a;
  --red-light: #b22222;
  --white: #f4f1eb;
  --gray: #8a9ab0;
  --gray-light: #dce3ed;
  --success: #2e7d32;
  --error: #c62828;
  --warning: #e65100;
  --card-bg: #1b2d42;
  --border: #2a3f58;
}

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

body {
  font-family: 'Georgia', serif;
  background: var(--navy);
  color: var(--white);
  min-height: 100vh;
  line-height: 1.6;
}

/* ── NAV ── */
nav {
  background: var(--navy-mid);
  border-bottom: 2px solid var(--gold);
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: .75rem;
  text-decoration: none;
  padding: 1rem 0;
}

.nav-brand .eagle { font-size: 1.6rem; }
.nav-brand .site-title { font-size: 1.1rem; font-weight: bold; color: var(--gold); letter-spacing: .5px; }
.nav-brand .site-sub { font-size: .7rem; color: var(--gray); letter-spacing: 2px; text-transform: uppercase; font-family: sans-serif; }

.nav-links { display: flex; gap: .25rem; }
.nav-links a {
  color: var(--gray);
  text-decoration: none;
  padding: .5rem .9rem;
  border-radius: 4px;
  font-family: sans-serif;
  font-size: .85rem;
  transition: all .2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--gold); background: rgba(201,162,39,.1); }

/* ── HERO ── */
.hero {
  text-align: center;
  padding: 4rem 2rem 3rem;
  background: linear-gradient(180deg, var(--navy-mid) 0%, var(--navy) 100%);
  border-bottom: 1px solid var(--border);
}

.hero h1 {
  font-size: 2.8rem;
  color: var(--gold);
  margin-bottom: .5rem;
  text-shadow: 0 2px 8px rgba(0,0,0,.4);
}

.hero p { color: var(--gray); font-size: 1.1rem; max-width: 600px; margin: 0 auto; }

/* ── CONTAINERS ── */
.container { max-width: 900px; margin: 0 auto; padding: 2rem; }
.container-wide { max-width: 1100px; margin: 0 auto; padding: 2rem; }

/* ── CARDS ── */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.75rem;
  margin-bottom: 1.5rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.test-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
  cursor: pointer;
  transition: all .25s;
  text-decoration: none;
  color: inherit;
  display: block;
}

.test-card:hover {
  border-color: var(--gold);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,.4);
}

.test-card .period-badge {
  display: inline-block;
  background: rgba(201,162,39,.15);
  color: var(--gold);
  border: 1px solid rgba(201,162,39,.3);
  padding: .25rem .6rem;
  border-radius: 4px;
  font-size: .75rem;
  font-family: sans-serif;
  font-weight: bold;
  margin-bottom: .75rem;
  letter-spacing: .5px;
}

.test-card .full-badge {
  background: rgba(139,26,26,.2);
  color: #ef9a9a;
  border-color: rgba(178,34,34,.4);
}

.test-card h3 { font-size: 1rem; margin-bottom: .4rem; color: var(--white); }
.test-card p { font-size: .82rem; color: var(--gray); font-family: sans-serif; }

/* ── SECTION HEADERS ── */
.section-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.section-header h2 {
  font-size: 1.5rem;
  color: var(--gold);
}

.divider {
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── BUTTONS ── */
.btn {
  display: inline-block;
  padding: .65rem 1.5rem;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  font-size: .9rem;
  font-family: sans-serif;
  font-weight: 600;
  transition: all .2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--gold);
  color: var(--navy);
}
.btn-primary:hover { background: var(--gold-light); }

.btn-outline {
  background: transparent;
  color: var(--gold);
  border: 1px solid var(--gold);
}
.btn-outline:hover { background: rgba(201,162,39,.1); }

.btn-danger { background: var(--red-light); color: white; }
.btn-danger:hover { background: #d32f2f; }

.btn-gray { background: var(--border); color: var(--white); }
.btn-gray:hover { background: #3a5068; }

.btn:disabled { opacity: .45; cursor: not-allowed; }

/* ── MCQ QUESTION ── */
.question-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.q-counter { font-family: sans-serif; font-size: .85rem; color: var(--gray); }

.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  margin-bottom: 1.5rem;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--gold);
  border-radius: 3px;
  transition: width .3s;
}

.stimulus-box {
  background: rgba(255,255,255,.04);
  border-left: 3px solid var(--gold);
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
  border-radius: 0 6px 6px 0;
  font-size: .9rem;
  font-style: italic;
  color: #c5d0de;
  line-height: 1.7;
}

.stimulus-attribution {
  font-style: normal;
  font-size: .78rem;
  color: var(--gray);
  margin-top: .5rem;
}

.question-text {
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
  color: var(--white);
}

.options { display: flex; flex-direction: column; gap: .6rem; }

.option-btn {
  background: rgba(255,255,255,.03);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: .85rem 1.1rem;
  text-align: left;
  cursor: pointer;
  color: var(--white);
  font-family: sans-serif;
  font-size: .9rem;
  transition: all .2s;
  display: flex;
  align-items: flex-start;
  gap: .75rem;
}

.option-btn:hover:not(:disabled) {
  border-color: var(--gold);
  background: rgba(201,162,39,.08);
}

.option-btn .letter {
  font-weight: bold;
  color: var(--gold);
  min-width: 1.2rem;
}

.option-btn.correct { border-color: var(--success); background: rgba(46,125,50,.15); }
.option-btn.incorrect { border-color: var(--error); background: rgba(198,40,40,.12); }
.option-btn.revealed { border-color: var(--success); background: rgba(46,125,50,.08); }

.explanation-box {
  margin-top: 1.25rem;
  padding: 1rem 1.25rem;
  background: rgba(255,255,255,.04);
  border-left: 3px solid var(--success);
  border-radius: 0 6px 6px 0;
  font-family: sans-serif;
  font-size: .88rem;
  color: #c5d0de;
  line-height: 1.6;
}

.explanation-box.wrong { border-left-color: var(--error); }

/* ── TIMER ── */
.timer {
  font-family: 'Courier New', monospace;
  font-size: 1.1rem;
  color: var(--gold);
  background: rgba(0,0,0,.3);
  padding: .3rem .7rem;
  border-radius: 4px;
}

.timer.warning { color: #ef9a9a; animation: pulse 1s infinite; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .6; }
}

/* ── RESULTS ── */
.results-card {
  text-align: center;
  padding: 2.5rem;
}

.score-circle {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  border: 4px solid var(--gold);
  background: rgba(201,162,39,.1);
}

.score-circle .score-num { font-size: 2.2rem; font-weight: bold; color: var(--gold); line-height: 1; }
.score-circle .score-denom { font-size: .85rem; color: var(--gray); font-family: sans-serif; }

.score-grade {
  font-size: 1.3rem;
  margin-bottom: .5rem;
}

.score-pct { font-size: 2rem; font-weight: bold; }
.score-pct.a { color: #66bb6a; }
.score-pct.b { color: #42a5f5; }
.score-pct.c { color: #ffa726; }
.score-pct.d { color: #ef5350; }

/* ── ESSAY PAGES ── */
.prompt-selector { margin-bottom: 1.5rem; }

.prompt-btn {
  display: block;
  width: 100%;
  text-align: left;
  background: rgba(255,255,255,.03);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  color: var(--white);
  cursor: pointer;
  font-family: sans-serif;
  font-size: .9rem;
  margin-bottom: .6rem;
  transition: all .2s;
  line-height: 1.5;
}

.prompt-btn:hover, .prompt-btn.active {
  border-color: var(--gold);
  background: rgba(201,162,39,.08);
  color: var(--gold);
}

.prompt-btn .prompt-tag {
  display: inline-block;
  font-size: .7rem;
  font-weight: bold;
  letter-spacing: .5px;
  color: var(--gray);
  margin-bottom: .3rem;
  text-transform: uppercase;
}

textarea {
  width: 100%;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  color: var(--white);
  font-family: Georgia, serif;
  font-size: .95rem;
  line-height: 1.7;
  resize: vertical;
  transition: border-color .2s;
}

textarea:focus {
  outline: none;
  border-color: var(--gold);
}

textarea::placeholder { color: var(--gray); }

.word-count {
  text-align: right;
  font-family: sans-serif;
  font-size: .78rem;
  color: var(--gray);
  margin-top: .4rem;
}

/* ── RUBRIC DISPLAY ── */
.rubric-grid { display: flex; flex-direction: column; gap: .75rem; }

.rubric-row {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: rgba(255,255,255,.03);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: border-color .3s;
}

.rubric-row.score-full { border-color: var(--success); background: rgba(46,125,50,.1); }
.rubric-row.score-partial { border-color: var(--warning); background: rgba(230,81,0,.1); }
.rubric-row.score-zero { border-color: var(--error); background: rgba(198,40,40,.1); }

.rubric-score-badge {
  min-width: 52px;
  text-align: center;
  padding: .3rem .5rem;
  border-radius: 6px;
  font-family: sans-serif;
  font-weight: bold;
  font-size: .85rem;
}

.rubric-score-badge.full { background: var(--success); color: white; }
.rubric-score-badge.partial { background: var(--warning); color: white; }
.rubric-score-badge.zero { background: var(--error); color: white; }

.rubric-row h4 {
  font-size: .9rem;
  color: var(--gold);
  margin-bottom: .3rem;
}

.rubric-row p {
  font-family: sans-serif;
  font-size: .85rem;
  color: #c5d0de;
  margin-bottom: .4rem;
}

.rubric-tip {
  font-size: .8rem;
  color: var(--gray);
  border-top: 1px solid var(--border);
  margin-top: .5rem;
  padding-top: .5rem;
}

.total-score-banner {
  text-align: center;
  padding: 1.5rem;
  background: var(--card-bg);
  border: 2px solid var(--gold);
  border-radius: 10px;
  margin-bottom: 1.5rem;
}

.total-score-banner .big-score { font-size: 3rem; font-weight: bold; color: var(--gold); }
.total-score-banner .max-score { font-size: 1rem; color: var(--gray); font-family: sans-serif; }

.strengths-list, .improvements-list {
  list-style: none;
  padding: 0;
}

.strengths-list li::before { content: '✓ '; color: var(--success); font-weight: bold; }
.improvements-list li::before { content: '→ '; color: var(--gold); font-weight: bold; }

.strengths-list li, .improvements-list li {
  font-family: sans-serif;
  font-size: .88rem;
  padding: .3rem 0;
  color: #c5d0de;
}

/* ── DBQ DOCS ── */
.doc-tabs {
  display: flex;
  gap: .4rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.doc-tab {
  padding: .4rem .8rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--gray);
  cursor: pointer;
  font-family: sans-serif;
  font-size: .82rem;
  transition: all .2s;
}

.doc-tab.active, .doc-tab:hover {
  border-color: var(--gold);
  color: var(--gold);
  background: rgba(201,162,39,.08);
}

.doc-content {
  background: rgba(255,255,255,.04);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
}

.doc-source {
  font-family: sans-serif;
  font-size: .78rem;
  color: var(--gold);
  font-weight: bold;
  letter-spacing: .5px;
  margin-bottom: .75rem;
  text-transform: uppercase;
}

.doc-text {
  font-size: .92rem;
  line-height: 1.75;
  color: #d8e0eb;
  font-style: italic;
}

/* ── LOADING SPINNER ── */
.loading {
  display: flex;
  align-items: center;
  gap: .75rem;
  justify-content: center;
  padding: 2rem;
  color: var(--gray);
  font-family: sans-serif;
}

.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--border);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── MISC ── */
.hidden { display: none !important; }

.tag {
  display: inline-block;
  padding: .2rem .6rem;
  border-radius: 4px;
  font-size: .75rem;
  font-family: sans-serif;
  font-weight: bold;
  letter-spacing: .5px;
}

.tag-blue { background: rgba(33,150,243,.15); color: #64b5f6; border: 1px solid rgba(33,150,243,.3); }
.tag-gold { background: rgba(201,162,39,.15); color: var(--gold); border: 1px solid rgba(201,162,39,.3); }
.tag-red { background: rgba(139,26,26,.2); color: #ef9a9a; border: 1px solid rgba(178,34,34,.3); }
.tag-green { background: rgba(46,125,50,.15); color: #81c784; border: 1px solid rgba(46,125,50,.3); }

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.btn-group { display: flex; gap: .75rem; flex-wrap: wrap; }

.info-banner {
  background: rgba(201,162,39,.08);
  border: 1px solid rgba(201,162,39,.25);
  border-radius: 8px;
  padding: .85rem 1.1rem;
  font-family: sans-serif;
  font-size: .85rem;
  color: #c5d0de;
  margin-bottom: 1.5rem;
}

.info-banner strong { color: var(--gold); }

@media (max-width: 640px) {
  nav { padding: 0 1rem; }
  .nav-links a { padding: .4rem .6rem; font-size: .78rem; }
  .hero h1 { font-size: 2rem; }
  .container, .container-wide { padding: 1rem; }
  .card { padding: 1.25rem; }
}