/* modern-workplace.css — shared styles for Modern Workplace English */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,600;0,700;1,600&family=DM+Sans:wght@400;500;900&display=swap');

:root {
  --purple-dark: #26215C;
  --purple-mid: #4A3F8F;
  --purple-light: #7B6FC4;
  --purple-pale: #EAE7F8;
  --paper: #FAF7F2;
  --paper-dark: #F0EBE1;
  --ink: #2C2A35;
  --ink-light: #5C5870;
  --gold: #B8860B;
  --gold-light: #E8D48A;
  --warm-white: #FFFDF9;
  --green: #2D6A4F;
  --green-pale: #D8F3DC;
  --red-pale: #FFE5E5;
  --radius: 10px;
  --shadow: 0 2px 16px rgba(38,33,92,0.10);
}

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

body {
  font-family: 'DM Sans', sans-serif;
  background-color: var(--paper);
  color: var(--ink);
  line-height: 1.7;
  font-size: 1rem;
}

/* ── NAV ── */
nav {
  background: var(--purple-dark);
  padding: 0.75rem 2rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.25);
}
nav a {
  color: #D8D4F0;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  letter-spacing: 0.03em;
  transition: color 0.2s;
}
nav a:hover, nav a.active { color: var(--gold-light); }
nav .sep { color: #6B65A0; }
nav .home { font-weight: 900; color: var(--gold-light); }

/* ── HEADER ── */
header {
  background: linear-gradient(135deg, var(--purple-dark) 0%, var(--purple-mid) 100%);
  padding: 3rem 2rem 2.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    -45deg, transparent, transparent 20px,
    rgba(255,255,255,0.025) 20px, rgba(255,255,255,0.025) 40px
  );
}
.unit-label {
  font-family: 'DM Sans', sans-serif;
  font-weight: 900;
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold-light);
  margin-bottom: 0.6rem;
  position: relative;
}
header h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 5vw, 3rem);
  color: #FFFDF9;
  font-weight: 700;
  line-height: 1.2;
  position: relative;
}
.header-sub {
  color: #B8B4D8;
  font-size: 0.95rem;
  margin-top: 0.75rem;
  position: relative;
}
.cefr-badge {
  display: inline-block;
  background: var(--gold);
  color: white;
  font-weight: 900;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  padding: 0.2rem 0.65rem;
  border-radius: 20px;
  margin-left: 0.4rem;
  vertical-align: middle;
  text-transform: uppercase;
}
.cefr-badge.b2 { background: var(--purple-mid); }

/* ── LAYOUT ── */
main {
  max-width: 820px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

/* ── SECTION TITLES ── */
.section-title {
  font-family: 'Playfair Display', serif;
  font-size: 1.5rem;
  color: var(--purple-dark);
  font-weight: 700;
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--purple-pale);
}

/* ── VOCAB TABLE ── */
.vocab-card {
  background: var(--warm-white);
  border: 1px solid var(--purple-pale);
  border-left: 4px solid var(--purple-mid);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  margin-bottom: 1.5rem;
}
.vocab-card table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.vocab-card th {
  background: var(--purple-dark);
  color: var(--gold-light);
  font-weight: 900;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.6rem 1rem;
  text-align: left;
}
.vocab-card td {
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--paper-dark);
  vertical-align: top;
}
.vocab-card tr:last-child td { border-bottom: none; }
.vocab-card tr:nth-child(even) td { background: var(--paper); }
.phrase-col {
  font-weight: 900;
  color: var(--purple-dark);
  width: 40%;
  font-size: 0.95rem;
}
.b2-flag {
  font-size: 0.68rem;
  background: var(--purple-mid);
  color: white;
  padding: 0.05rem 0.35rem;
  border-radius: 4px;
  font-weight: 900;
  vertical-align: middle;
  margin-left: 0.3rem;
  text-transform: uppercase;
}

/* ── LEVEL UP BOX ── */
.levelup-box {
  background: var(--warm-white);
  border: 1px solid var(--paper-dark);
  border-left: 4px solid var(--gold);
  border-radius: var(--radius);
  padding: 1.25rem 1.25rem 1.25rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow);
}
.levelup-head {
  font-weight: 900;
  color: var(--gold);
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}
.levelup-box > p {
  font-size: 0.93rem;
  color: var(--ink-light);
  margin-bottom: 1rem;
}
.levelup-grid {
  display: grid;
  gap: 0.75rem;
}
.levelup-item {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  grid-template-rows: auto auto;
  gap: 0.2rem 0.75rem;
  align-items: center;
  background: var(--paper);
  border-radius: 6px;
  padding: 0.6rem 0.85rem;
  font-size: 0.9rem;
}
.levelup-basic {
  color: var(--ink-light);
  font-style: italic;
  text-decoration: line-through;
  text-decoration-color: #CCC;
}
.levelup-arrow {
  color: var(--gold);
  font-weight: 900;
  font-size: 1rem;
  text-align: center;
}
.levelup-upgrade {
  font-weight: 900;
  color: var(--purple-dark);
}
.levelup-eg {
  grid-column: 1 / 4;
  font-size: 0.85rem;
  color: var(--ink-light);
  padding-top: 0.15rem;
}

/* ── SITUATION ── */
.situation {
  background: var(--purple-pale);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  border-left: 4px solid var(--purple-mid);
  font-size: 0.95rem;
}
.situation strong { color: var(--purple-dark); }

/* ── DIALOGUE ── */
.dialogue {
  background: var(--warm-white);
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--paper-dark);
  margin-bottom: 1.5rem;
}
.dialogue-turn {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 0.4rem 0.75rem;
  margin-bottom: 0.85rem;
  align-items: baseline;
}
.dialogue-turn:last-child { margin-bottom: 0; }
.speaker {
  font-weight: 900;
  color: var(--purple-dark);
  font-size: 0.92rem;
  text-align: right;
  padding-top: 0.05em;
}
.utterance { color: var(--ink); font-size: 0.97rem; line-height: 1.65; }
.dialogue-break { border: none; border-top: 1px dashed var(--purple-pale); margin: 1rem 0; }

/* ── MINI DIALOGUES ── */
.mini-dialogues { display: grid; gap: 0.75rem; margin-bottom: 1.5rem; }
.mini-pair {
  background: var(--warm-white);
  border: 1px solid var(--paper-dark);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 1px 6px rgba(38,33,92,0.06);
}
.mini-q {
  padding: 0.6rem 1rem;
  background: var(--purple-pale);
  font-size: 0.93rem;
}
.mini-q .speaker { text-align: left; display: inline; margin-right: 0.4rem; }
.mini-a-wrap { border-top: 1px solid var(--paper-dark); }
.toggle-btn {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.55rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--purple-mid);
  transition: background 0.15s;
}
.toggle-btn:hover { background: var(--paper); }
.toggle-btn .arrow { font-size: 0.75rem; transition: transform 0.25s; color: var(--purple-light); }
.toggle-btn.open .arrow { transform: rotate(180deg); }
.mini-a-content {
  display: none;
  padding: 0.6rem 1rem 0.75rem;
  font-size: 0.93rem;
  color: var(--ink);
  background: var(--warm-white);
  animation: fadeSlide 0.2s ease;
}
.mini-a-content.visible { display: block; }
.mini-a-content .speaker { display: inline; text-align: left; margin-right: 0.4rem; }

/* ── COMPREHENSION ── */
.comp-list { list-style: none; display: grid; gap: 0.6rem; margin-bottom: 1.5rem; }
.comp-list li {
  background: var(--warm-white);
  border: 1px solid var(--paper-dark);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 1px 6px rgba(38,33,92,0.06);
}
.comp-q-btn {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.7rem 1rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem;
  color: var(--ink);
  font-weight: 500;
  transition: background 0.15s;
  line-height: 1.5;
}
.comp-q-btn:hover { background: var(--paper); }
.comp-q-btn .q-num {
  font-weight: 900;
  color: var(--purple-dark);
  min-width: 1.5rem;
  font-size: 0.9rem;
  padding-top: 0.05em;
}
.comp-q-btn .q-arrow {
  margin-left: auto;
  font-size: 0.75rem;
  color: var(--purple-light);
  transition: transform 0.25s;
  flex-shrink: 0;
  padding-top: 0.25em;
}
.comp-q-btn.open .q-arrow { transform: rotate(180deg); }
.comp-answer {
  display: none;
  padding: 0.5rem 1rem 0.75rem 3rem;
  font-size: 0.92rem;
  color: var(--ink-light);
  background: var(--paper);
  border-top: 1px solid var(--paper-dark);
  animation: fadeSlide 0.2s ease;
  font-style: italic;
}
.comp-answer.visible { display: block; }

/* ── LANGUAGE FOCUS ── */
.lang-focus-grid {
  display: grid;
  gap: 0.85rem;
  margin-bottom: 1.25rem;
}
.lf-card {
  background: var(--warm-white);
  border: 1px solid var(--paper-dark);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  box-shadow: 0 1px 6px rgba(38,33,92,0.06);
}
.lf-label {
  font-weight: 900;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--ink-light);
  margin-bottom: 0.3rem;
}
.lf-eg {
  font-size: 0.95rem;
  padding: 0.45rem 0.75rem;
  border-radius: 6px;
  margin-bottom: 0.5rem;
  line-height: 1.5;
}
.lf-eg.bad { background: var(--red-pale); color: #7A2020; }
.lf-eg.good { background: var(--green-pale); color: var(--green); }
.lf-note {
  font-size: 0.87rem;
  color: var(--ink-light);
  font-style: italic;
  margin-top: 0.25rem;
}

/* ── PRACTICE PROMPT ── */
.practice-prompt {
  background: var(--purple-pale);
  border-left: 4px solid var(--purple-mid);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  font-size: 0.93rem;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}
.practice-prompt ol {
  margin-top: 0.5rem;
  padding-left: 1.25rem;
  display: grid;
  gap: 0.25rem;
}

/* ── DISCUSSION ── */
.discussion-list { list-style: none; display: grid; gap: 0.6rem; margin-bottom: 1.5rem; }
.discussion-list li {
  background: var(--warm-white);
  border: 1px solid var(--paper-dark);
  border-left: 4px solid var(--gold);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  display: flex;
  gap: 0.75rem;
  font-size: 0.95rem;
  line-height: 1.55;
}
.discussion-list .d-num { font-weight: 900; color: var(--gold); min-width: 1.5rem; }

/* ── COMING NEXT TEASER ── */
.coming-next {
  background: linear-gradient(135deg, var(--purple-dark), var(--purple-mid));
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  color: #E8E4F8;
  font-size: 0.95rem;
  line-height: 1.6;
}
.cn-label {
  font-weight: 900;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--gold-light);
  margin-bottom: 0.4rem;
}

/* ── PAGE NAV & FOOTER ── */
.page-footer {
  text-align: center;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--paper-dark);
  font-size: 0.85rem;
  color: var(--ink-light);
}
.page-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}
.page-nav a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--purple-dark);
  color: white;
  text-decoration: none;
  padding: 0.55rem 1.1rem;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.9rem;
  transition: background 0.2s;
}
.page-nav a:hover { background: var(--purple-mid); }
.page-nav a.next { margin-left: auto; }

/* ── HINT TEXT ── */
.hint { margin-bottom: 1rem; font-size: 0.93rem; color: var(--ink-light); }

/* ── INDEX PAGE ── */
.index-intro {
  max-width: 820px;
  margin: 2rem auto 0;
  padding: 0 1.5rem;
  font-size: 0.97rem;
  color: var(--ink-light);
  line-height: 1.7;
}
.unit-grid {
  display: grid;
  gap: 1rem;
  max-width: 820px;
  margin: 1.5rem auto;
  padding: 0 1.5rem 4rem;
}
.unit-card {
  background: var(--warm-white);
  border: 1px solid var(--paper-dark);
  border-left: 5px solid var(--purple-mid);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-rows: auto auto;
  gap: 0.2rem 1rem;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow);
  transition: border-left-color 0.2s, box-shadow 0.2s, transform 0.15s;
  align-items: start;
}
.unit-card:hover {
  border-left-color: var(--gold);
  box-shadow: 0 4px 20px rgba(38,33,92,0.15);
  transform: translateX(3px);
}
.unit-card.coming-soon {
  opacity: 0.55;
  cursor: default;
  pointer-events: none;
}
.uc-num {
  font-weight: 900;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--purple-light);
  grid-column: 1;
  grid-row: 1;
  padding-top: 0.15em;
}
.uc-title {
  font-family: 'Playfair Display', serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--purple-dark);
  grid-column: 2;
  grid-row: 1;
}
.uc-desc {
  font-size: 0.88rem;
  color: var(--ink-light);
  line-height: 1.5;
  grid-column: 2;
  grid-row: 2;
}
.uc-arrow {
  font-size: 1.1rem;
  color: var(--purple-light);
  grid-column: 3;
  grid-row: 1 / 3;
  align-self: center;
  transition: color 0.2s;
}
.unit-card:hover .uc-arrow { color: var(--gold); }
.uc-soon {
  font-size: 0.72rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-light);
  background: var(--paper-dark);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  grid-column: 3;
  grid-row: 1 / 3;
  align-self: center;
}
.index-footer {
  text-align: center;
  font-size: 0.85rem;
  color: var(--ink-light);
  padding-bottom: 2rem;
}

@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (max-width: 600px) {
  .dialogue-turn { grid-template-columns: 70px 1fr; }
  nav { gap: 0.5rem; padding: 0.65rem 1rem; }
  main { padding: 1.5rem 1rem 3rem; }
  .levelup-item { grid-template-columns: 1fr; }
  .levelup-arrow { display: none; }
}