/* ==========================================================================
   IELTS Academic Mock Exam — stylesheet
   Design system: "Admission Ticket" — ink navy, paper, exam-seal red, teal
   ========================================================================== */

:root {
  --ink: #16233F;
  --ink-soft: #2A3A5C;
  --paper: #EFF1EE;
  --paper-raised: #FFFFFF;
  --paper-tint: #E4E8E3;
  --seal: #B4402B;
  --teal: #2F6F62;
  --teal-dark: #23554A;
  --gold: #B08D3F;
  --graphite: #3A3F42;
  --line: #D7DAD3;
  --line-strong: #B7BCB2;

  --font-display: "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-body: "IBM Plex Sans", "Segoe UI", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "Courier New", monospace;

  --measure: 68ch;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--graphite);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--teal-dark); }
a:hover { color: var(--seal); }

img, svg { max-width: 100%; }

/* ---------- Skip link / focus ---------- */
.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--ink); color: #fff; padding: 10px 16px;
  z-index: 200; border-radius: 0 0 6px 0;
}
.skip-link:focus { left: 0; }

a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 2px;
}

/* ---------- Top bar ---------- */
.topbar {
  background: var(--ink);
  color: #EDEFE9;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 3px solid var(--gold);
}
.topbar-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 60px;
}
.brand {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  text-decoration: none;
  color: #fff;
}
.brand .brand-mark {
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}
.brand .brand-sub {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-top: 3px;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid #5b6787;
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 6px 10px;
  border-radius: 4px;
  cursor: pointer;
}

.mainnav { display: flex; gap: 2px; }
.mainnav a {
  display: flex;
  align-items: baseline;
  gap: 7px;
  color: #C9CEDB;
  text-decoration: none;
  font-size: 0.86rem;
  padding: 20px 12px;
  border-bottom: 3px solid transparent;
  margin-bottom: -3px;
  white-space: nowrap;
}
.mainnav a .chip {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--gold);
}
.mainnav a:hover { color: #fff; }
.mainnav a.active {
  color: #fff;
  border-bottom-color: var(--teal);
}

@media (max-width: 780px) {
  .nav-toggle { display: inline-block; }
  .mainnav {
    display: none;
    position: absolute;
    top: 60px; left: 0; right: 0;
    background: var(--ink);
    flex-direction: column;
    gap: 0;
    border-bottom: 3px solid var(--gold);
  }
  .mainnav.open { display: flex; }
  .mainnav a { padding: 14px 20px; border-bottom: 1px solid #2A3A5C; margin-bottom: 0; }
  .mainnav a.active { border-bottom: 1px solid var(--teal); background: rgba(47,111,98,0.15); }
}

/* ---------- Layout shells ---------- */
main { display: block; }
.page-header {
  max-width: 1080px;
  margin: 0 auto;
  padding: 44px 20px 18px;
}
.page-header .eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal-dark);
}
.page-header h1 {
  font-family: var(--font-display);
  font-size: 2.1rem;
  margin: 6px 0 8px;
  color: var(--ink);
}
.page-header .meta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--graphite);
  opacity: 0.8;
}

.content {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 6px 20px 70px;
}
.content-wide {
  max-width: 1080px;
  margin: 0 auto;
  padding: 6px 20px 70px;
}

.content h2, .content-wide h2 {
  font-family: var(--font-display);
  color: var(--ink);
  font-size: 1.5rem;
  margin-top: 2.4em;
  padding-top: 0.6em;
  border-top: 1px solid var(--line);
}
.content h2:first-of-type, .content-wide h2:first-of-type { margin-top: 0.6em; }

.content h3, .content-wide h3 {
  font-family: var(--font-display);
  color: var(--ink-soft);
  font-size: 1.18rem;
  margin-top: 2em;
}

.content p, .content-wide p { margin: 0.9em 0; }
.content ul, .content-wide ul { padding-left: 1.3em; }
.content li, .content-wide li { margin: 0.4em 0; }

hr.rule {
  border: none;
  border-top: 1px solid var(--line);
  margin: 2.4em 0;
}

/* ---------- Transcript blocks ---------- */
.transcript {
  background: var(--paper-raised);
  border-left: 4px solid var(--teal);
  padding: 18px 20px;
  margin: 1.3em 0;
  border-radius: 0 6px 6px 0;
}
.transcript p { margin: 0.55em 0; font-size: 0.97rem; }
.transcript p:first-child { margin-top: 0; }
.transcript p:last-child { margin-bottom: 0; }
.transcript strong {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  color: var(--teal-dark);
  text-transform: uppercase;
  margin-right: 4px;
}

/* ---------- Floor plan / ascii diagram ---------- */
pre.floor-plan {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background: var(--paper-raised);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 18px;
  overflow-x: auto;
  line-height: 1.4;
}

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; margin: 1.4em 0; }
table {
  border-collapse: collapse;
  width: 100%;
  background: var(--paper-raised);
  font-size: 0.92rem;
}
table caption { display:none; }
th, td {
  border: 1px solid var(--line);
  padding: 9px 12px;
  text-align: left;
  vertical-align: top;
}
thead th {
  background: var(--ink);
  color: #fff;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.02em;
}
tbody tr:nth-child(even) td { background: #F6F7F4; }

/* ---------- Reveal / details ---------- */
details.reveal {
  background: var(--paper-raised);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  margin: 1.6em 0 2.2em;
  padding: 0;
}
details.reveal > summary {
  list-style: none;
  cursor: pointer;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--teal-dark);
  background: #E7EDE9;
  border-radius: 8px;
}
details.reveal > summary::-webkit-details-marker { display: none; }
details.reveal > summary::before {
  content: "▸";
  display: inline-block;
  transition: transform 0.15s ease;
  color: var(--seal);
}
details.reveal[open] > summary::before { transform: rotate(90deg); }
details.reveal[open] > summary { border-radius: 8px 8px 0 0; border-bottom: 1px solid var(--line-strong); }
details.reveal .reveal-body { padding: 4px 22px 20px; }

/* ---------- Arabic / RTL passages ---------- */
.ar { direction: rtl; text-align: right; unicode-bidi: embed; }

/* ---------- Homepage: admission ticket hero ---------- */
.hero {
  max-width: 1080px;
  margin: 40px auto 10px;
  padding: 0 20px;
}
.ticket {
  display: flex;
  background: var(--paper-raised);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  box-shadow: 0 18px 40px -22px rgba(22,35,63,0.35);
  overflow: hidden;
  animation: rise 0.5s ease both;
}
@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
.ticket-main {
  flex: 1;
  padding: 30px 32px;
  min-width: 0;
}
.ticket-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal-dark);
}
.ticket-title {
  font-family: var(--font-display);
  font-size: 1.9rem;
  color: var(--ink);
  margin: 6px 0 2px;
}
.ticket-sub { color: var(--graphite); opacity: 0.85; margin-bottom: 18px; }
.ticket-fields {
  display: flex;
  flex-wrap: wrap;
  gap: 22px 34px;
  margin-top: 10px;
}
.ticket-field { min-width: 150px; }
.ticket-field .label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--graphite);
  opacity: 0.65;
  display: block;
  margin-bottom: 5px;
}
.ticket-field .value-line {
  border-bottom: 1px solid var(--line-strong);
  min-height: 22px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.ticket-stub {
  width: 168px;
  flex-shrink: 0;
  background: var(--ink);
  color: #EDEFE9;
  padding: 22px 18px;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  border-left: 2px dashed #5B6787;
}
.stamp {
  width: 84px; height: 84px;
  border: 3px solid var(--seal);
  border-radius: 50%;
  color: var(--seal);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transform: rotate(-14deg);
  line-height: 1.2;
  background: rgba(180,64,43,0.06);
}
.barcode {
  width: 100%;
  height: 34px;
  margin-top: 16px;
  background: repeating-linear-gradient(90deg, #EDEFE9 0 2px, transparent 2px 4px, #EDEFE9 4px 5px, transparent 5px 9px, #EDEFE9 9px 12px, transparent 12px 14px);
  opacity: 0.85;
}
.serial {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  color: #9AA3C0;
  margin-top: 8px;
}

@media (max-width: 640px) {
  .ticket { flex-direction: column; }
  .ticket-stub {
    width: auto;
    flex-direction: row;
    border-left: none;
    border-top: 2px dashed #5B6787;
    justify-content: space-between;
  }
  .barcode { display: none; }
}

/* ---------- Instructions table + rules on homepage ---------- */
.home-section {
  max-width: 1080px;
  margin: 0 auto;
  padding: 34px 20px 0;
}
.home-section h2 {
  font-family: var(--font-display);
  color: var(--ink);
  font-size: 1.35rem;
  border-top: 1px solid var(--line);
  padding-top: 0.7em;
}
.rules-list { padding-left: 1.2em; }
.rules-list li { margin: 0.5em 0; }

/* ---------- Section nav cards ---------- */
.section-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 18px 0 10px;
}
.section-card {
  flex: 1 1 260px;
  background: var(--paper-raised);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 20px 20px 22px;
  text-decoration: none;
  color: inherit;
  display: block;
  position: relative;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.section-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 30px -18px rgba(22,35,63,0.4);
}
.section-card .num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--gold);
  letter-spacing: 0.08em;
}
.section-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--ink);
  margin: 6px 0 6px;
}
.section-card p { margin: 0; font-size: 0.88rem; color: var(--graphite); opacity: 0.85; }
.section-card .tag {
  display: inline-block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--teal-dark);
  border-bottom: 2px solid transparent;
}
.section-card:hover .tag { border-bottom-color: var(--teal); }

/* ---------- Footer ---------- */
footer.site-footer {
  border-top: 1px solid var(--line);
  padding: 26px 20px 40px;
  text-align: center;
  font-size: 0.82rem;
  color: var(--graphite);
  opacity: 0.75;
}
footer.site-footer .ar { display: block; margin-top: 6px; direction: rtl; }

/* ==========================================================================
   Interactive components: audio player, question inputs, grading, timer
   ========================================================================== */

/* ---------- Audio / TTS player bar ---------- */
.audio-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  background: #E7EDE9;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 10px 14px;
  margin: 1em 0 0.4em;
}
.audio-bar .a-status {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--teal-dark);
  flex: 1;
  min-width: 140px;
}
.btn {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.82rem;
  border: 1px solid var(--teal);
  background: var(--teal);
  color: #fff;
  padding: 8px 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.12s ease, transform 0.05s ease;
}
.btn:hover { background: var(--teal-dark); }
.btn:active { transform: translateY(1px); }
.btn.btn-ghost {
  background: transparent;
  color: var(--teal-dark);
}
.btn.btn-ghost:hover { background: rgba(47,111,98,0.1); }
.btn.btn-seal { background: var(--seal); border-color: var(--seal); }
.btn.btn-seal:hover { background: #8f3222; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn[data-playing="true"] { background: var(--seal); border-color: var(--seal); }

/* ---------- Question inputs ---------- */
.q {
  margin: 0.85em 0;
  padding: 10px 12px;
  border-radius: 6px;
  border: 1px solid transparent;
}
.q-label { display: block; margin-bottom: 6px; }
.q-label .qnum {
  font-family: var(--font-mono);
  color: var(--teal-dark);
  margin-right: 6px;
}
.q input[type="text"] {
  font-family: var(--font-body);
  font-size: 0.95rem;
  border: none;
  border-bottom: 2px solid var(--line-strong);
  background: transparent;
  padding: 4px 2px;
  min-width: 160px;
  color: var(--ink-soft);
}
.q input[type="text"]:focus {
  outline: none;
  border-bottom-color: var(--teal);
}
.q .opt-row { display: flex; flex-wrap: wrap; gap: 6px 20px; margin-top: 4px; }
.q .opt-row label { font-size: 0.93rem; display: flex; align-items: center; gap: 5px; cursor: pointer; }
.q select {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  padding: 4px 8px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: var(--paper-raised);
  color: var(--ink-soft);
}

.q.correct { background: rgba(47,111,98,0.08); border-color: var(--teal); }
.q.incorrect { background: rgba(180,64,43,0.07); border-color: var(--seal); }
.q .feedback {
  display: none;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  margin-top: 5px;
}
.q.correct .feedback, .q.incorrect .feedback { display: block; }
.q.correct .feedback { color: var(--teal-dark); }
.q.incorrect .feedback { color: var(--seal); }
.q.correct .feedback::before { content: "✓ Correct"; margin-right: 6px; }
.q.incorrect .feedback::before { content: "✗ "; }

/* ---------- Grading toolbar + score banner ---------- */
.grade-bar {
  position: sticky;
  bottom: 0;
  z-index: 60;
  background: var(--ink);
  color: #EDEFE9;
  border-top: 3px solid var(--gold);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin: 2.4em -20px 0;
}
.grade-bar .score {
  font-family: var(--font-mono);
  font-size: 0.95rem;
}
.grade-bar .score strong { color: var(--gold); font-size: 1.1rem; }
.grade-bar .hint { font-size: 0.78rem; color: #C9CEDB; flex: 1; min-width: 160px; }

/* ---------- Timer widget (Speaking) ---------- */
.timer-card {
  background: var(--paper-raised);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 20px 22px;
  margin: 1.4em 0;
  text-align: center;
}
.timer-display {
  font-family: var(--font-mono);
  font-size: 2.6rem;
  color: var(--ink);
  letter-spacing: 0.04em;
  margin: 6px 0 12px;
}
.timer-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal-dark);
}
.timer-controls { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.timer-display.warn { color: var(--seal); }

/* ---------- Word-count textarea (Writing) ---------- */
.write-box textarea {
  width: 100%;
  min-height: 220px;
  font-family: var(--font-body);
  font-size: 0.98rem;
  line-height: 1.6;
  padding: 14px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--paper-raised);
  color: var(--graphite);
  resize: vertical;
}
.write-box textarea:focus { outline: none; border-color: var(--teal); }
.word-count {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--graphite);
  opacity: 0.75;
  margin-top: 6px;
  text-align: right;
}
.word-count.ok { color: var(--teal-dark); opacity: 1; }