/* ==========================================================================
   SSAT Official Guide 2015 — Multi-Section Engine Styles (og2015_test.css)
   Features: Split-Screen Reading | Essay Word Processor | Diagram Display
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=Syne:wght@600;700;800&family=Merriweather:ital,wght@0,300;0,400;0,700;1,300&display=swap');

:root {
  --bg-dark: #09090e;
  --bg-panel: rgba(18, 18, 28, 0.88);
  --border-color: rgba(255, 255, 255, 0.08);
  --primary: #7c3aed;
  --primary-light: #9f67ff;
  --secondary: #06b6d4;
  --accent: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --font-brand: 'Syne', sans-serif;
  --font-body: 'Outfit', sans-serif;
  --font-reading: 'Merriweather', serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--font-body);
  background: var(--bg-dark);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Test Header & Section Progress Stepper ────────── */
.test-hdr {
  height: 70px;
  background: rgba(13, 13, 20, 0.95);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 30px;
  position: sticky;
  top: 0;
  z-index: 100;
}
.test-brand {
  font-family: var(--font-brand);
  font-size: 1.2rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
}
.test-title-box { font-weight: 600; color: var(--text-muted); font-size: 0.9rem; }

.section-stepper {
  display: flex;
  align-items: center;
  gap: 8px;
}
.step-badge {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-color);
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: all 0.3s;
}
.step-badge.active {
  background: rgba(124, 58, 237, 0.2);
  border-color: var(--primary);
  color: var(--primary-light);
  box-shadow: 0 0 12px rgba(124, 58, 237, 0.3);
}
.step-badge.completed {
  background: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.4);
  color: #34d399;
}

.timer-box {
  background: rgba(124, 58, 237, 0.15);
  border: 1px solid rgba(124, 58, 237, 0.3);
  color: var(--primary-light);
  padding: 6px 16px;
  border-radius: 20px;
  font-weight: 700;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.timer-box.warning {
  background: rgba(239, 68, 68, 0.2);
  border-color: rgba(239, 68, 68, 0.5);
  color: #f87171;
  animation: pulse 1s infinite;
}
@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

.btn-finish-sec {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border: none; color: #fff; padding: 8px 18px; border-radius: 10px;
  font-weight: 600; cursor: pointer; transition: all 0.2s;
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
}
.btn-finish-sec:hover { transform: translateY(-1px); box-shadow: 0 6px 18px rgba(124, 58, 237, 0.5); }

/* ── Section Intro & Intermission Screens ──────────── */
.screen-card {
  flex: 1; display: flex; align-items: center; justify-content: center; padding: 40px 20px;
}
.intro-box {
  background: var(--bg-panel); border: 1px solid var(--border-color);
  border-radius: 24px; padding: 40px; max-width: 600px; width: 100%; text-align: center;
  box-shadow: 0 20px 50px rgba(0,0,0,0.5), 0 0 30px rgba(124, 58, 237, 0.2);
}
.intro-box h2 { font-family: var(--font-brand); font-size: 2rem; color: #fff; margin-bottom: 12px; }
.intro-meta { display: flex; justify-content: center; gap: 20px; margin-bottom: 24px; }
.meta-tag { background: rgba(255,255,255,0.05); padding: 6px 14px; border-radius: 12px; font-size: 0.9rem; font-weight: 600; color: var(--secondary); }
.intro-inst { color: var(--text-muted); font-size: 1rem; line-height: 1.6; margin-bottom: 32px; text-align: left; background: rgba(0,0,0,0.3); padding: 20px; border-radius: 14px; }
.btn-begin { width: 100%; background: linear-gradient(135deg, var(--accent), #059669); color: #fff; border: none; padding: 14px; border-radius: 14px; font-weight: 700; font-size: 1.1rem; cursor: pointer; transition: all 0.2s; }
.btn-begin:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(16, 185, 129, 0.4); }

/* ── Essay Writing Interface (Section 1) ───────────── */
.essay-container {
  flex: 1; display: flex; flex-direction: column; max-width: 1100px; width: 100%; margin: 30px auto; padding: 0 30px;
}
.essay-prompts-box {
  background: var(--bg-panel); border: 1px solid var(--border-color);
  border-radius: 18px; padding: 24px; margin-bottom: 20px;
}
.prompt-lbl { font-size: 0.8rem; font-weight: 700; color: var(--secondary); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 12px; }
.prompt-opt { display: flex; gap: 12px; margin-bottom: 12px; cursor: pointer; align-items: flex-start; }
.prompt-opt input[type="radio"] { margin-top: 4px; accent-color: var(--primary); }
.prompt-text { font-size: 1.05rem; line-height: 1.5; color: #fff; }
.essay-editor {
  flex: 1; display: flex; flex-direction: column; background: var(--bg-panel); border: 1px solid var(--border-color); border-radius: 18px; padding: 24px;
}
.editor-hdr { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--border-color); }
.word-count { font-size: 0.9rem; font-weight: 600; color: var(--primary-light); background: rgba(124, 58, 237, 0.15); padding: 4px 12px; border-radius: 12px; }
.essay-textarea {
  flex: 1; width: 100%; min-height: 400px; background: rgba(0,0,0,0.4); border: 1px solid var(--border-color); border-radius: 14px; padding: 20px; color: #fff; font-family: var(--font-body); font-size: 1.05rem; line-height: 1.7; resize: vertical; outline: none; transition: border-color 0.2s;
}
.essay-textarea:focus { border-color: var(--primary); }

/* ── Split-Screen Layout (Reading Comprehension) ───── */
.test-main {
  flex: 1; display: grid; grid-template-columns: 1fr 340px; gap: 24px; padding: 30px; max-width: 1500px; width: 100%; margin: 0 auto;
}
.test-main.split-mode {
  grid-template-columns: 1fr 1fr 300px;
}
@media (max-width: 1100px) {
  .test-main.split-mode { grid-template-columns: 1fr; }
}

.reading-pane {
  background: var(--bg-panel); border: 1px solid var(--border-color); border-radius: 24px; padding: 36px; overflow-y: auto; max-height: calc(100vh - 130px);
}
.reading-title { font-family: var(--font-brand); font-size: 1.4rem; color: #fff; margin-bottom: 20px; padding-bottom: 12px; border-bottom: 1px solid var(--border-color); }
.reading-content { font-family: var(--font-reading); font-size: 1.05rem; line-height: 1.9; color: #cbd5e1; white-space: pre-line; }

/* ── Left/Middle Question Area ─────────────────────── */
.q-area {
  background: var(--bg-panel); border: 1px solid var(--border-color); border-radius: 24px; padding: 36px; display: flex; flex-direction: column; justify-content: space-between; overflow-y: auto; max-height: calc(100vh - 130px);
}
.q-sec-lbl { font-size: 0.8rem; font-weight: 700; color: var(--secondary); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; }
.q-num-lbl { font-family: var(--font-brand); font-size: 1.4rem; font-weight: 800; color: #fff; margin-bottom: 16px; }
.diagram-box {
  background: #fff; padding: 10px; border-radius: 14px; margin-bottom: 16px; display: flex; justify-content: center; align-items: center; max-height: 240px; overflow: hidden; box-shadow: 0 10px 25px rgba(0,0,0,0.5);
}
.diagram-img { max-width: 100%; max-height: 220px; object-fit: contain; margin: 8px auto; display: block; }
.q-text { font-size: 1.15rem; line-height: 1.7; color: var(--text-main); margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid var(--border-color); }

.options-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 24px; }
.opt-card {
  background: rgba(255,255,255,0.03); border: 1px solid var(--border-color); padding: 14px 18px; border-radius: 14px; display: flex; align-items: center; gap: 14px; cursor: pointer; transition: all 0.2s;
}
.opt-card:hover { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.2); }
.opt-card.selected { background: rgba(124, 58, 237, 0.2); border-color: var(--primary); box-shadow: 0 0 16px rgba(124, 58, 237, 0.25); }
.opt-letter { width: 30px; height: 30px; border-radius: 8px; background: rgba(255,255,255,0.05); border: 1px solid var(--border-color); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 0.85rem; color: var(--text-muted); }
.opt-card.selected .opt-letter { background: var(--primary); color: #fff; border-color: transparent; }
.opt-text { font-size: 1rem; color: var(--text-main); }

.q-nav-ftr { display: flex; justify-content: space-between; align-items: center; padding-top: 16px; border-top: 1px solid var(--border-color); }
.btn-nav { background: rgba(255,255,255,0.05); border: 1px solid var(--border-color); color: #fff; padding: 10px 20px; border-radius: 12px; font-weight: 600; cursor: pointer; transition: all 0.2s; }
.btn-nav:hover { background: rgba(255,255,255,0.1); }
.btn-nav.pri { background: var(--primary); border: none; }
.btn-nav.pri:hover { background: var(--primary-light); }

/* ── Right Palette Panel ───────────────────────────── */
.palette-panel {
  background: var(--bg-panel); border: 1px solid var(--border-color); border-radius: 24px; padding: 24px; display: flex; flex-direction: column; max-height: calc(100vh - 130px);
}
.palette-title { font-family: var(--font-brand); font-size: 1.1rem; font-weight: 700; color: #fff; margin-bottom: 14px; }
.palette-legend { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; font-size: 0.75rem; color: var(--text-muted); }
.legend-item { display: flex; align-items: center; gap: 6px; }
.legend-dot { width: 8px; height: 8px; border-radius: 2px; }
.dot-ans { background: var(--accent); }
.dot-unans { background: rgba(255,255,255,0.1); }
.dot-curr { border: 2px solid var(--primary); }
.palette-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; overflow-y: auto; padding-right: 4px; }
.pal-btn { aspect-ratio: 1; background: rgba(255,255,255,0.04); border: 1px solid var(--border-color); border-radius: 8px; color: #fff; font-weight: 600; font-size: 0.85rem; cursor: pointer; transition: all 0.2s; }
.pal-btn:hover { background: rgba(255,255,255,0.1); }
.pal-btn.answered { background: rgba(16, 185, 129, 0.2); border-color: rgba(16, 185, 129, 0.5); color: #34d399; }
.pal-btn.current { border: 2px solid var(--primary); box-shadow: 0 0 10px rgba(124, 58, 237, 0.4); }

/* ── Score Certificate & Review Screen ─────────────── */
.result-screen { display: none; padding: 40px 30px; max-width: 1200px; margin: 0 auto; width: 100%; }
.res-hdr { text-align: center; margin-bottom: 40px; }
.res-hdr h1 { font-family: var(--font-brand); font-size: 2.8rem; color: #fff; margin-bottom: 10px; }
.total-score-box {
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.25), rgba(6, 182, 212, 0.25));
  border: 1px solid rgba(124, 58, 237, 0.5); border-radius: 24px; padding: 30px; text-align: center; margin-bottom: 30px;
  box-shadow: 0 0 40px rgba(124, 58, 237, 0.3);
}
.total-lbl { font-size: 1rem; font-weight: 700; color: var(--secondary); text-transform: uppercase; letter-spacing: 2px; }
.total-val { font-family: var(--font-brand); font-size: 4rem; font-weight: 800; color: #fff; margin: 10px 0; }
.total-sub { font-size: 0.95rem; color: var(--text-muted); }

.res-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 40px; }
@media (max-width: 800px) { .res-cards { grid-template-columns: 1fr; } }
.res-card { background: var(--bg-panel); border: 1px solid var(--border-color); border-radius: 20px; padding: 24px; text-align: center; }
.res-card h3 { font-size: 1.1rem; color: #fff; margin-bottom: 8px; }
.res-val { font-family: var(--font-brand); font-size: 2.2rem; font-weight: 800; color: var(--primary-light); }
.res-lbl { font-size: 0.85rem; color: var(--text-muted); margin-top: 4px; }

.review-tabs { display: flex; gap: 12px; margin-bottom: 24px; border-bottom: 1px solid var(--border-color); padding-bottom: 12px; }
.rev-tab-btn { background: rgba(255,255,255,0.05); border: 1px solid var(--border-color); color: var(--text-muted); padding: 10px 20px; border-radius: 12px; font-weight: 600; cursor: pointer; transition: all 0.2s; }
.rev-tab-btn.active { background: var(--primary); color: #fff; border-color: transparent; }

.rev-list { display: flex; flex-direction: column; gap: 20px; }
.rev-item { background: var(--bg-panel); border: 1px solid var(--border-color); border-radius: 20px; padding: 24px; }
.rev-item.correct { border-left: 6px solid var(--accent); }
.rev-item.wrong { border-left: 6px solid var(--danger); }
.rev-q { font-size: 1.1rem; font-weight: 600; color: #fff; margin-bottom: 12px; }
.rev-exp { background: rgba(0,0,0,0.3); padding: 14px; border-radius: 10px; font-size: 0.95rem; color: #cbd5e1; margin-top: 12px; }

.essay-review-box { background: var(--bg-panel); border: 1px solid var(--border-color); border-radius: 20px; padding: 30px; margin-bottom: 30px; }
.essay-review-box h3 { font-family: var(--font-brand); font-size: 1.4rem; color: #fff; margin-bottom: 12px; }
.essay-content-disp { background: rgba(0,0,0,0.4); padding: 24px; border-radius: 14px; color: #cbd5e1; font-family: var(--font-reading); font-size: 1.05rem; line-height: 1.8; white-space: pre-wrap; }