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

:root {
  --ink:          #111210;
  --paper:        #F8F7F3;
  --muted:        #6B6A63;
  --border:       #E0DED6;
  --accent:       #1A6B45;
  --accent-light: #EBF4EE;
  --serif:        'Instrument Serif', Georgia, serif;
  --sans:         'DM Sans', sans-serif;
}

.main{
  display: none;
}
footer {
  border-top:1px solid var(--border);
  padding:28px 48px;
  display:flex;
  justify-content:space-between;
  align-items:center; font-size:12px; color:var(--muted);
}

body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  min-height: 100vh;
}

/* ── NAV ──────────────────────────────────────────── */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 48px;
  border-bottom: 1px solid var(--border);
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 10;
}
.logo {
  font-family: var(--serif);
  font-size: 20px;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.3px;
}
.logo span { color: var(--accent); }

.nav-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}
.nav-breadcrumb a {
  color: var(--accent);
  text-decoration: none;
}
.nav-breadcrumb a:hover { text-decoration: underline; }
.crumb-active { color: var(--muted); }

/* ── MAIN ─────────────────────────────────────────── */
main {
  max-width: 860px;
  margin: 0 auto;
  padding: 52px 24px 80px;
}

/* ── PAGE HEADER ──────────────────────────────────── */
.page-header { margin-bottom: 36px; }

.exam-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-light);
  padding: 5px 12px;
  border-radius: 20px;
  margin-bottom: 14px;
}
.page-header h1 {
  font-family: var(--serif);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 400;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}
.page-header p {
  font-size: 14px;
  color: var(--muted);
  max-width: 560px;
  line-height: 1.65;
}

/* ── STATS ROW ────────────────────────────────────── */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 32px;
}
.stat-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.stat-value {
  font-size: 22px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.3px;
}
.stat-label {
  font-size: 12px;
  color: var(--muted);
}

/* ── FILTER ROW ───────────────────────────────────── */
.filter-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.filter-label {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .8px;
  font-weight: 500;
  flex-shrink: 0;
}
.filter-pills {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.pill {
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 400;
  color: var(--muted);
  background: #fff;
  border: 1px solid var(--border);
  text-decoration: none;
  transition: all .18s;
}
.pill:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.pill.active {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

/* ── PAPERS LIST ──────────────────────────────────── */
.papers-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ── PAPER CARD ───────────────────────────────────── */
.paper-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 24px;
  text-decoration: none;
  color: var(--ink);
  gap: 16px;
  transition: border-color .2s, box-shadow .2s, transform .15s;
  position: relative;
  overflow: hidden;
}
.paper-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--accent);
  border-radius: 12px 0 0 12px;
  opacity: 0;
  transition: opacity .2s;
}
.paper-card:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 20px rgba(0,0,0,.06);
  transform: translateX(3px);
}
.paper-card:hover::before { opacity: 1; }

/* left side */
.paper-left {
  display: flex;
  align-items: center;
  gap: 20px;
  flex: 1;
  min-width: 0;
}

.paper-number {
  font-family: var(--serif);
  font-size: 28px;
  color: var(--border);
  font-weight: 400;
  flex-shrink: 0;
  line-height: 1;
  width: 36px;
  transition: color .2s;
}
.paper-card:hover .paper-number { color: var(--accent); }

.paper-info { min-width: 0; }

.paper-top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.paper-top h2 {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 400;
}
.paper-session {
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 400;
  color: var(--muted);
}

/* badges */
.paper-badge {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .6px;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 4px;
}
.paper-badge.new {
  background: var(--accent-light);
  color: var(--accent);
}
.paper-badge.classic {
  background: #F5F0E8;
  color: #8B6914;
}

/* meta row inside card */
.paper-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}
.paper-meta span {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  color: var(--muted);
}
.paper-meta svg {
  width: 13px;
  height: 13px;
  flex-shrink: 0;
}

/* right side */
.paper-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  flex-shrink: 0;
}

.paper-score-mini {
  font-size: 11px;
  color: var(--muted);
  line-height: 1;
}

.paper-status {
  font-size: 12px;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 20px;
}
.paper-status.not-started {
  background: var(--paper);
  color: var(--muted);
  border: 1px solid var(--border);
}
.paper-status.in-progress {
  background: #FBF0E8;
  color: #B35A1A;
  border: 1px solid #F0CDA8;
}
.paper-status.completed {
  background: var(--accent-light);
  color: var(--accent);
  border: 1px solid #B2D9C3;
}

.btn-start {
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  white-space: nowrap;
  transition: gap .2s;
}

/* ── RESPONSIVE ───────────────────────────────────── */
@media (max-width: 640px) {
  nav { padding: 16px 20px; }
  main { padding: 36px 16px 60px; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .paper-card { flex-direction: column; align-items: flex-start; }
  .paper-right { width: 100%; align-items: flex-start; }
  .paper-meta { gap: 10px; }
  .nav-breadcrumb { display: none; }
}


/* ── COMING SOON SECTION ─────────────────────────── */
.coming-soon-section {
  margin-top: 24px;
  border: 1.5px dashed var(--border);
  border-radius: 14px;
  padding: 28px;
  background: var(--surface);
}

.coming-soon-inner {
  display: flex;
  align-items: center;
  gap: 16px;
}

.coming-soon-icon {
  width: 44px;
  height: 44px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--muted);
}

.coming-soon-text {
  flex: 1;
}

.coming-soon-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 4px;
}

.coming-soon-desc {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
  font-weight: 300;
}

.coming-soon-link {
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--white);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.coming-soon-link:hover {
  border-color: var(--ink);
  box-shadow: 0 2px 10px rgba(0,0,0,0.06);
}

/* ── RESPONSIVE ──────────────────────────────────── */
@media (max-width: 520px) {
  .coming-soon-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .coming-soon-link {
    align-self: flex-start;
  }
}