:root {
  --bg: #f3efe8;
  --panel: #fffdf9;
  --panel-2: #f8f3ec;
  --ink: #29231f;
  --muted: #766e66;
  --line: #ded6cc;
  --accent: #6b4937;
  --accent-2: #a87455;
  --accent-soft: #eadbd0;
  --green: #446b59;
  --gold: #9a6f27;
  --danger: #8d4a47;
  --shadow: 0 14px 35px rgba(55, 41, 32, .09);
  --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
button, input, textarea, select { font: inherit; }
button { color: inherit; }
a { color: var(--accent); }

.app-shell { min-height: 100vh; display: grid; grid-template-columns: 270px 1fr; }
.sidebar {
  position: sticky; top: 0; height: 100vh; height: 100dvh; overflow-y: auto; overscroll-behavior: contain;
  padding: 24px 18px;
  background: #2d2723;
  color: #f8f2ec;
  display: flex; flex-direction: column; gap: 26px;
  z-index: 20;
}
.brand { display: flex; align-items: center; gap: 12px; padding: 0 6px; }
.brand-mark {
  width: 42px; height: 42px; border-radius: 13px;
  display: grid; place-items: center; font-size: 28px;
  background: linear-gradient(145deg, #8f6248, #583b2c);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.13);
}
.brand strong { display: block; font-size: 17px; letter-spacing: .02em; }
.brand span { display: block; margin-top: 2px; color: #bdb2aa; font-size: 12px; }
.nav { display: grid; gap: 7px; }
.nav-item {
  border: 0; background: transparent; color: #d8cec7; text-align: left;
  padding: 11px 12px; border-radius: 11px; cursor: pointer;
  display: flex; align-items: center; gap: 11px; transition: .18s ease;
}
.nav-item span { width: 20px; text-align: center; color: #af9b8f; }
.nav-item:hover { background: rgba(255,255,255,.06); color: #fff; }
.nav-item.active { background: #f4ece5; color: #322a25; font-weight: 700; }
.nav-item.active span { color: var(--accent); }
.sidebar-footer { margin-top: auto; border-top: 1px solid rgba(255,255,255,.08); padding-top: 18px; }
.sidebar-footer label { display: block; color: #bdb2aa; font-size: 12px; margin-bottom: 7px; }
.sidebar-footer select {
  width: 100%; padding: 9px 10px; border-radius: 9px; border: 1px solid rgba(255,255,255,.1);
  background: #39312c; color: white; outline: none;
}
.mini-progress { margin-top: 17px; }
.mini-progress-head { display: flex; justify-content: space-between; font-size: 12px; color: #c9beb6; margin-bottom: 7px; }
.progress-track { height: 8px; border-radius: 999px; background: rgba(112,91,78,.18); overflow: hidden; }
.sidebar .progress-track { background: rgba(255,255,255,.1); }
.progress-fill { height: 100%; width: 0; background: linear-gradient(90deg, #9c6d51, #d2a47f); border-radius: inherit; transition: width .25s ease; }

.main { min-width: 0; }
.topbar {
  height: 72px; position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 12px; padding: 12px 30px;
  background: rgba(243,239,232,.9); backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(110,91,78,.08);
}
.menu-btn { display: none !important; }
.icon-btn {
  width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 12px;
  background: var(--panel); cursor: pointer; display: grid; place-items: center;
  font-size: 18px; transition: .18s ease;
}
.icon-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 14px rgba(55,41,32,.08); }
.search-wrap {
  flex: 1; min-width: 0; max-width: 720px; display: flex; align-items: center; gap: 10px;
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 0 14px;
}
.search-wrap span { color: var(--muted); font-size: 20px; }
.search-wrap input { width: 100%; min-width: 0; border: 0; outline: 0; background: transparent; padding: 11px 0; color: var(--ink); }

.view { padding: 30px; max-width: 1460px; margin: 0 auto; }
.eyebrow { text-transform: uppercase; letter-spacing: .13em; font-size: 11px; color: var(--accent-2); font-weight: 800; }
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(29px, 4vw, 48px); line-height: 1.05; margin-bottom: 14px; letter-spacing: -.035em; }
h2 { font-size: 24px; letter-spacing: -.02em; }
.hero {
  position: relative; overflow: hidden; padding: 34px; border-radius: 26px;
  background: radial-gradient(circle at 85% 20%, rgba(255,255,255,.18), transparent 26%), linear-gradient(135deg, #5b3e30, #8c6048);
  color: white; box-shadow: var(--shadow); margin-bottom: 24px;
}
.hero::after { content: "⌁"; position: absolute; right: 38px; bottom: -45px; font-size: 170px; color: rgba(255,255,255,.08); transform: rotate(-12deg); }
.hero p { max-width: 720px; color: #eadfd8; line-height: 1.7; margin-bottom: 20px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.btn {
  border: 0; border-radius: 11px; padding: 10px 14px; cursor: pointer; font-weight: 750;
  background: var(--accent); color: white; transition: .18s ease;
}
.btn:hover { transform: translateY(-1px); filter: brightness(1.04); }
.btn-light { background: white; color: #493226; }
.btn-outline { background: transparent; border: 1px solid var(--line); color: var(--ink); }
.btn-soft { background: var(--accent-soft); color: #593d2f; }
.btn-danger { background: #f0dfdd; color: var(--danger); }
.btn-sm { padding: 7px 10px; font-size: 12px; }

.stat-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 14px; margin: 22px 0 28px; }
.stat-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; box-shadow: 0 8px 22px rgba(55,41,32,.045); }
.stat-card span { color: var(--muted); font-size: 12px; display: block; margin-bottom: 8px; }
.stat-card strong { font-size: 27px; letter-spacing: -.02em; }
.stat-card small { display: block; margin-top: 6px; color: var(--muted); }

.section-head { display: flex; align-items: end; justify-content: space-between; gap: 16px; margin: 30px 0 14px; }
.section-head h2 { margin: 0; }
.section-head p { color: var(--muted); margin: 5px 0 0; }
.semester-chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  border: 1px solid var(--line); background: var(--panel); border-radius: 999px; padding: 8px 11px; cursor: pointer; font-size: 12px;
}
.chip.active { background: #302823; color: white; border-color: #302823; }

.card-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 14px; }
.course-card {
  background: var(--panel); border: 1px solid var(--line); border-radius: 17px; padding: 17px;
  min-height: 188px; display: flex; flex-direction: column; gap: 12px; position: relative;
  box-shadow: 0 7px 18px rgba(55,41,32,.035); transition: .18s ease;
}
.course-card:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(55,41,32,.075); border-color: #cbbdaf; }
.course-card-top { display: flex; justify-content: space-between; gap: 12px; }
.badges { display: flex; gap: 6px; flex-wrap: wrap; }
.badge { border-radius: 999px; padding: 5px 8px; font-size: 10px; font-weight: 800; letter-spacing: .02em; background: var(--panel-2); color: var(--muted); border: 1px solid var(--line); }
.badge.warn { background: #fff4db; color: #805b18; border-color: #ead3a1; }
.badge.done { background: #e5f0e9; color: #3f6854; border-color: #c8ddcf; }
.badge.study { background: #e9e6f3; color: #5e527d; border-color: #d5cee8; }
.favorite-btn { border: 0; background: transparent; cursor: pointer; font-size: 20px; color: #9e9186; padding: 0 3px; }
.favorite-btn.active { color: #9a6f27; }
.course-card h3 { font-size: 17px; margin: 0; line-height: 1.35; }
.course-card p { color: var(--muted); font-size: 13px; line-height: 1.55; margin: 0; }
.course-card-footer { margin-top: auto; display: flex; align-items: center; gap: 9px; }
.course-card-footer .progress-track { flex: 1; }
.course-card-footer small { color: var(--muted); min-width: 34px; text-align: right; }
.clickable { cursor: pointer; }

.notice { display: flex; gap: 12px; align-items: flex-start; padding: 15px 16px; border-radius: 14px; background: #fff7e7; border: 1px solid #ebd7ac; color: #72561f; margin: 16px 0; }
.notice strong { display: block; margin-bottom: 3px; }
.notice p { margin: 0; line-height: 1.55; font-size: 13px; }
.notice.info { background: #f1eee9; border-color: #ddd5ca; color: #5d544c; }
.empty { background: var(--panel); border: 1px dashed #cdbfb3; border-radius: 18px; padding: 38px; text-align: center; color: var(--muted); }

.dashboard-current { display: grid; grid-template-columns: 1.4fr .6fr; gap: 14px; }
.dashboard-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 20px; box-shadow: 0 8px 22px rgba(55,41,32,.035); }
.panel h3 { margin-bottom: 8px; }
.panel p { color: var(--muted); line-height: 1.55; }
.checklist-mini { display: grid; gap: 8px; margin-top: 14px; }
.checklist-mini button { text-align: left; border: 1px solid var(--line); background: var(--panel-2); padding: 10px 11px; border-radius: 10px; cursor: pointer; }

.course-dialog { width: min(920px, calc(100vw - 30px)); max-height: 92vh; padding: 0; border: 0; border-radius: 22px; background: var(--panel); box-shadow: 0 30px 90px rgba(25,17,12,.28); }
.course-dialog::backdrop { background: rgba(31,25,21,.58); backdrop-filter: blur(4px); }
.dialog-shell { padding: 0; position: relative; }
.dialog-close { position: sticky; float: right; top: 14px; margin: 14px 14px -48px 0; z-index: 2; width: 36px; height: 36px; border: 0; border-radius: 50%; background: rgba(255,255,255,.92); cursor: pointer; font-size: 24px; box-shadow: 0 3px 12px rgba(0,0,0,.08); }
.course-hero { padding: 30px 34px 24px; background: linear-gradient(135deg,#5d4031,#896149); color: white; }
.course-hero h2 { font-size: 30px; margin: 10px 0; max-width: 720px; }
.course-hero p { margin: 0; color: #eadfd8; }
.course-content { padding: 28px 34px 36px; }
.course-tabs { position: sticky; top: 0; z-index: 5; display: flex; gap: 7px; flex-wrap: wrap; margin: 0 -4px 20px; padding: 9px 4px; background: rgba(255,253,249,.96); backdrop-filter: blur(10px); border-bottom: 1px solid rgba(222,214,204,.72); }
.course-tab { border: 1px solid var(--line); background: var(--panel); border-radius: 999px; padding: 8px 11px; cursor: pointer; font-size: 12px; }
.course-tab.active { background: #322a25; color: white; border-color: #322a25; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }
.syllabus { line-height: 1.75; color: #49413b; white-space: pre-wrap; }
.study-list { display: grid; gap: 9px; }
.study-item { display: grid; grid-template-columns: 24px 1fr; gap: 10px; align-items: start; padding: 11px 12px; border: 1px solid var(--line); border-radius: 11px; background: var(--panel-2); }
.study-item input { width: 17px; height: 17px; margin-top: 2px; accent-color: var(--green); }
.study-item.checked span { text-decoration: line-through; color: var(--muted); }
.biblio { line-height: 1.7; color: #514942; }
.biblio h4 { margin: 22px 0 8px; }
.notes-area { width: 100%; min-height: 220px; resize: vertical; padding: 14px; border: 1px solid var(--line); border-radius: 12px; background: #fffefb; outline: 0; line-height: 1.6; }
.notes-area:focus { border-color: #b99b88; box-shadow: 0 0 0 3px rgba(107,73,55,.08); }
.status-row { display: flex; gap: 8px; flex-wrap: wrap; margin: 16px 0 0; }
.status-btn { border: 1px solid rgba(255,255,255,.25); background: rgba(255,255,255,.08); color: white; border-radius: 999px; padding: 7px 10px; cursor: pointer; font-size: 12px; }
.status-btn.active { background: white; color: #4a3328; }

.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.detail-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.detail-table th,.detail-table td { padding: 11px 9px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.detail-table th { color: var(--muted); font-weight: 650; width: 42%; }

.overlay { display: none; }

@media (max-width: 1080px) {
  .card-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .stat-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .dashboard-current { grid-template-columns: 1fr; }
}

@media (max-width: 820px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: fixed; left: 0; transform: translateX(-104%); transition: transform .24s ease; width: min(290px, 86vw); box-shadow: 16px 0 50px rgba(0,0,0,.18); }
  .sidebar.open { transform: translateX(0); }
  .overlay { position: fixed; inset: 0; z-index: 19; background: rgba(0,0,0,.36); }
  .overlay.show { display: block; }
  .menu-btn { display: grid !important; }
  .topbar { padding: 10px 15px; }
  .view { padding: 20px 15px 32px; }
  .hero { padding: 26px 22px; border-radius: 20px; }
  .card-grid, .dashboard-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .course-hero { padding: 26px 22px 22px; }
  .course-hero h2 { font-size: 25px; padding-right: 34px; }
  .course-content { padding: 22px; }
}

@media (max-width: 520px) {
  .stat-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat-card { padding: 14px; }
  .stat-card strong { font-size: 22px; }
  .search-wrap input { font-size: 14px; }
  .hero h1 { font-size: 31px; }
  .section-head { align-items: flex-start; flex-direction: column; }
}

@media print {
  .sidebar,.topbar,.dialog-close,.course-tabs,.btn,.favorite-btn { display:none !important; }
  .app-shell { display:block; }
  .view { padding:0; max-width:none; }
  .course-card,.panel,.stat-card { break-inside:avoid; box-shadow:none; }
  body { background:white; }
}

/* ===== Study Hub v2 ===== */
.version { display:block; margin-top:12px; color:#9b8e84; font-size:10px; text-align:center; }
.top-section { margin-top: 0; }
.top-section h1 { font-size:38px; margin:5px 0 6px; }
.semester-section { margin-bottom: 34px; }
.muted { color: var(--muted); }
.quiz-badge { background:#eef1e8; color:#586345; border-color:#d8dfcc; }

.today-card {
  display:flex; align-items:center; justify-content:space-between; gap:22px;
  background:linear-gradient(120deg,#f3ece6,#fffaf4); border:1px solid #dfd0c4;
  border-radius:20px; padding:22px 24px; margin:18px 0 28px;
}
.today-card h2 { margin:5px 0 7px; }
.today-card p { margin:0; color:var(--muted); }

.review-explainer { background:#f3efe9; border:1px solid var(--line); padding:15px 17px; border-radius:14px; line-height:1.6; color:#5b514a; margin-bottom:16px; }
.review-list { display:grid; gap:11px; }
.review-row { display:flex; align-items:center; justify-content:space-between; gap:18px; background:var(--panel); border:1px solid var(--line); border-radius:16px; padding:17px 18px; }
.review-row h3 { margin:4px 0 5px; }
.review-row p { margin:0; color:var(--muted); font-size:13px; }
.review-actions { display:flex; gap:7px; flex-shrink:0; }

.course-dialog { overflow:auto; }
.course-progress-line { display:flex; align-items:center; gap:10px; margin-top:16px; max-width:520px; }
.course-progress-line .progress-track { flex:1; background:rgba(255,255,255,.2); }
.course-progress-line .progress-fill { background:#fff; }
.course-progress-line strong { font-size:12px; min-width:35px; text-align:right; }
.source-split { display:flex; gap:7px; flex-wrap:wrap; align-items:center; color:var(--muted); font-size:11px; margin-bottom:16px; }
.source-pill { display:inline-flex; padding:5px 8px; border-radius:999px; font-size:10px; font-weight:850; text-transform:uppercase; letter-spacing:.04em; }
.source-pill.official { background:#e6eee8; color:#42624e; }
.source-pill.support { background:#eee8e2; color:#745745; }

.guide-intro { background:#f7f1eb; border:1px solid #e5d8cc; border-radius:15px; padding:18px; margin-bottom:18px; }
.guide-intro h3 { margin:5px 0 7px; }
.guide-intro p { margin:0; line-height:1.68; color:#514942; }
.two-col { display:grid; grid-template-columns:minmax(0,1.4fr) minmax(230px,.6fr); gap:18px; align-items:start; }
.study-tips { background:var(--panel-2); border:1px solid var(--line); border-radius:15px; padding:17px; position:sticky; top:10px; }
.study-tips ol { padding-left:20px; color:#574e47; line-height:1.62; }
.study-tips li + li { margin-top:8px; }
.mini-rule { margin-top:14px; padding:12px; background:white; border:1px solid var(--line); border-radius:11px; }
.mini-rule p { margin:5px 0 0; color:var(--muted); font-size:12px; line-height:1.55; }

.tab-heading { display:flex; align-items:flex-start; justify-content:space-between; gap:15px; margin-bottom:16px; }
.tab-heading h3 { margin:4px 0 5px; font-size:22px; }
.tab-heading p { margin:0; color:var(--muted); line-height:1.6; }
.score-chip { background:#f0ebe5; border:1px solid var(--line); border-radius:999px; padding:7px 10px; font-size:11px; font-weight:800; white-space:nowrap; }

.lesson-list { display:grid; gap:10px; }
.lesson-card { border:1px solid var(--line); border-radius:14px; background:var(--panel); overflow:hidden; }
.lesson-card summary { display:grid; grid-template-columns:36px 1fr auto; gap:10px; align-items:center; padding:14px 15px; cursor:pointer; list-style:none; }
.lesson-card summary::-webkit-details-marker { display:none; }
.lesson-card[open] summary { background:#f7f2ec; border-bottom:1px solid var(--line); }
.lesson-number { width:30px; height:30px; border-radius:9px; background:#e9dfd5; display:grid; place-items:center; font-size:11px; font-weight:850; color:#6c5141; }
.lesson-state { color:var(--muted); font-size:10px; text-transform:uppercase; letter-spacing:.04em; }
.lesson-body { padding:15px; }
.concept-inline { border-left:3px solid #aa8873; padding:8px 12px; background:#faf7f3; margin-bottom:10px; border-radius:0 10px 10px 0; }
.concept-inline p { margin:5px 0 0; color:#554d47; line-height:1.65; font-size:13px; }
.recall-box { margin:14px 0; padding:13px 14px; border:1px dashed #cbb9aa; border-radius:11px; background:#fffdf9; }
.recall-box ul { margin:7px 0 0; padding-left:20px; color:var(--muted); font-size:13px; line-height:1.6; }

.flash-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:11px; }
.flashcard { border:1px solid var(--line); border-radius:15px; background:#fbf8f4; overflow:hidden; min-height:145px; transition:.18s ease; }
.flashcard.mastered { border-color:#bbd2c2; background:#f2f8f4; }
.flashcard.missed { border-color:#e1c5bf; background:#fff7f5; }
.flashcard summary { list-style:none; cursor:pointer; padding:16px; min-height:145px; display:flex; flex-direction:column; gap:9px; }
.flashcard summary::-webkit-details-marker { display:none; }
.flash-label { color:var(--muted); font-size:10px; text-transform:uppercase; letter-spacing:.08em; font-weight:800; }
.flashcard summary strong { line-height:1.45; }
.reveal { margin-top:auto; color:var(--accent-2); font-size:11px; font-weight:800; }
.flash-answer { border-top:1px solid var(--line); padding:14px 16px 16px; background:rgba(255,255,255,.7); }
.flash-answer p { margin:0 0 12px; line-height:1.65; color:#504842; font-size:13px; }
.flash-actions { display:flex; gap:7px; flex-wrap:wrap; }

.quiz-form { display:grid; gap:14px; }
.quiz-question { border:1px solid var(--line); border-radius:15px; padding:15px; margin:0; }
.quiz-question.correct { border-color:#abc9b4; background:#f4faf6; }
.quiz-question.wrong { border-color:#dab8b0; background:#fff7f5; }
.quiz-question legend { font-weight:780; line-height:1.45; padding:0 5px; }
.quiz-question legend span { display:inline-grid; place-items:center; width:23px; height:23px; border-radius:7px; background:#eee5dc; margin-right:7px; font-size:10px; }
.quiz-option { display:grid; grid-template-columns:20px 1fr; gap:8px; align-items:start; padding:10px 11px; border:1px solid #ece3da; border-radius:10px; margin-top:8px; cursor:pointer; background:white; }
.quiz-option:hover { border-color:#cdbbad; }
.quiz-option input { margin-top:3px; accent-color:var(--accent); }
.quiz-option span { font-size:12px; line-height:1.52; color:#504842; }
.quiz-result { margin-top:16px; }
.quiz-score { display:flex; align-items:center; gap:13px; padding:14px; border-radius:13px; border:1px solid var(--line); }
.quiz-score.pass { background:#eef7f1; border-color:#c6ddcc; }
.quiz-score.retry { background:#fff4f0; border-color:#e2c4bb; }
.quiz-score > strong { font-size:28px; }
.quiz-score p { margin:2px 0 0; color:var(--muted); font-size:12px; }
.quiz-feedback { margin-top:12px; padding:14px; border:1px solid var(--line); border-radius:12px; }
.quiz-feedback h4 { margin:0 0 8px; }
.quiz-feedback p { margin:8px 0; font-size:12px; line-height:1.55; color:#5b514a; }
.success-note { background:#eef7f1; padding:12px; border-radius:10px; color:#466153; }

.official-box { background:#f7faf8; border:1px solid #dce8df; border-radius:15px; padding:18px; margin-bottom:15px; }
.official-box h3 { margin:9px 0; }
.source-link { margin-top:16px !important; }

@media (max-width: 820px) {
  .two-col { grid-template-columns:1fr; }
  .study-tips { position:static; }
  .flash-grid { grid-template-columns:1fr; }
  .today-card, .review-row { align-items:flex-start; flex-direction:column; }
  .review-actions { width:100%; }
  .review-actions .btn { flex:1; }
  .tab-heading { flex-direction:column; }
  .score-chip { align-self:flex-start; }
}

@media (max-width: 520px) {
  .course-tabs { flex-wrap:nowrap; overflow-x:auto; padding-bottom:4px; scrollbar-width:thin; }
  .course-tab { white-space:nowrap; }
  .lesson-card summary { grid-template-columns:32px 1fr; }
  .lesson-state { grid-column:2; }
  .source-split { display:grid; grid-template-columns:auto 1fr; }
  .top-section h1 { font-size:32px; }
}

/* v3: auditoria, glossário e plano da turma */
.audit-grid { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:12px; margin-bottom:16px; }
.audit-card { background:var(--panel); border:1px solid var(--line); border-radius:15px; padding:15px; display:flex; flex-direction:column; gap:4px; }
.audit-card span { color:var(--muted); font-size:11px; text-transform:uppercase; letter-spacing:.06em; font-weight:800; }
.audit-card strong { font-size:26px; line-height:1.1; }
.audit-card small { color:var(--muted); line-height:1.45; }
.audit-card.warn { background:#fff8f1; border-color:#e7cdb9; }

.glossary-list { display:grid; gap:10px; }
.glossary-item { display:grid; grid-template-columns:minmax(180px,.8fr) minmax(0,2fr) auto; gap:16px; align-items:center; background:var(--panel); border:1px solid var(--line); border-radius:14px; padding:14px 15px; }
.glossary-item > div { display:flex; flex-direction:column; gap:4px; }
.glossary-item > div strong { font-size:14px; }
.glossary-item > div span { color:var(--muted); font-size:10px; }
.glossary-item p { margin:0; color:#554d47; font-size:12px; line-height:1.55; }

.class-plan-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px; }
.class-plan-grid label { display:flex; flex-direction:column; gap:7px; }
.class-plan-grid label > span { font-size:11px; font-weight:800; color:#5b514a; }
.class-plan-grid .span-2 { grid-column:1 / -1; }
.plan-input { width:100%; border:1px solid var(--line); border-radius:11px; padding:11px 12px; font:inherit; background:#fff; color:var(--text); outline:none; }
.plan-input:focus, .notes-area:focus { border-color:#b89a86; box-shadow:0 0 0 3px rgba(107,73,55,.08); }
.notes-area.compact { min-height:110px; }

@media (max-width: 900px) {
  .audit-grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .glossary-item { grid-template-columns:1fr; align-items:start; }
  .glossary-item .btn { justify-self:start; }
}

@media (max-width: 620px) {
  .audit-grid, .class-plan-grid { grid-template-columns:1fr; }
  .class-plan-grid .span-2 { grid-column:auto; }
}

/* v4: robustez de layout e leitura */
.syllabus,.biblio,.official-box,.detail-table td,.concept-inline p,.glossary-item p { overflow-wrap:anywhere; word-break:normal; }
.audit-grid-secondary { margin-top:12px; }
@media (max-width: 520px) {
  .course-dialog { width:100vw; max-width:100vw; height:100dvh; max-height:100dvh; margin:0; border-radius:0; }
  .course-content { padding:20px 16px 28px; }
  .course-hero { padding:24px 18px 20px; }
  .course-hero h2 { font-size:24px; }
  .course-tabs { margin-left:-2px; margin-right:-2px; }
  .dialog-close { top:10px; margin-right:10px; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior:auto !important; transition:none !important; } }

/* v5.1: assinatura editorial compacta */
.project-credit {
  margin-top: 14px;
  padding: 13px 10px 2px;
  border-top: 1px solid rgba(255,255,255,.08);
  text-align: center;
}
.project-credit .version {
  display: inline-flex;
  margin: 0 0 9px;
  padding: 4px 8px;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 999px;
  background: rgba(255,255,255,.025);
  color: #948981;
  font-size: 9px;
  letter-spacing: .04em;
}
.project-credit p { margin: 0; }
.project-source {
  color: #b8ada5;
  font-size: 10px;
  line-height: 1.55;
}
.project-source a {
  color: #dbc4b5;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid rgba(219,196,181,.34);
}
.project-source a:hover,
.project-source a:focus-visible {
  color: #fff7f1;
  border-bottom-color: currentColor;
}
.project-note {
  margin-top: 6px !important;
  color: #887d76;
  font-size: 9px;
  line-height: 1.45;
}
.project-author {
  margin-top: 10px !important;
  color: #aaa099;
  font-size: 10px;
}
.author-link {
  color: #f0e6df;
  font-weight: 800;
  text-decoration: none;
  padding-bottom: 1px;
  border-bottom: 1px solid rgba(240,230,223,.35);
}
.author-link:hover,
.author-link:focus-visible {
  color: #fff;
  border-bottom-color: currentColor;
}
@media (max-width: 820px) {
  .project-credit { padding-bottom: 10px; }
}

/* ===== v5.2: responsividade desktop, tablet e mobile ===== */
/* Base desktop: conteúdo ganha espaço sem esticar excessivamente. */
.app-shell { grid-template-columns: clamp(250px, 19vw, 286px) minmax(0, 1fr); }
.sidebar { width: 100%; }
.main { width: 100%; min-width: 0; }
.view { width: 100%; max-width: 1500px; padding-inline: clamp(24px, 3vw, 44px); }
.topbar { padding-inline: clamp(20px, 3vw, 44px); }
.card-grid { grid-template-columns: repeat(3, minmax(250px, 1fr)); }
.course-card { min-width: 0; }
.course-card h3,
.course-card p,
.panel,
.stat-card,
.notice,
.review-row,
.today-card { min-width: 0; }

/* Rodapé editorial completo, legível sem dominar a sidebar. */
.project-credit {
  margin-top: 16px;
  padding: 15px 4px 4px;
  text-align: left;
}
.project-credit .version {
  margin: 0 0 10px;
  font-size: 9px;
}
.project-source {
  color: #bdb2aa;
  font-size: 9.5px;
  line-height: 1.58;
}
.project-note {
  margin-top: 8px !important;
  color: #968a82;
  font-size: 9.5px;
  line-height: 1.5;
}
.project-source a,
.project-note a {
  color: #ead7ca;
  font-weight: 750;
  text-decoration: none;
  border-bottom: 1px solid rgba(234,215,202,.34);
}
.project-source a:hover,
.project-source a:focus-visible,
.project-note a:hover,
.project-note a:focus-visible {
  color: #fff7f1;
  border-bottom-color: currentColor;
}

/* Desktop largo */
@media (min-width: 1280px) {
  .hero { padding: 38px 40px; }
  .stat-grid { gap: 16px; }
  .card-grid { gap: 16px; }
  .course-dialog { width: min(980px, calc(100vw - 64px)); }
}

/* Notebook / tablet landscape */
@media (max-width: 1180px) {
  .card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero::after { right: 18px; font-size: 150px; }
  .course-dialog { width: min(900px, calc(100vw - 36px)); }
}

/* Tablet: sidebar vira drawer para liberar largura útil. */
@media (max-width: 960px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: min(320px, 82vw);
    height: 100dvh;
    transform: translateX(-104%);
    transition: transform .24s ease;
    box-shadow: 18px 0 55px rgba(0,0,0,.2);
    padding: 22px 18px;
  }
  .sidebar.open { transform: translateX(0); }
  .overlay { position: fixed; inset: 0; z-index: 19; background: rgba(0,0,0,.36); }
  .overlay.show { display: block; }
  .menu-btn { display: grid !important; }
  .topbar { min-height: 66px; height: auto; padding-block: 10px; }
  .view { padding-top: 24px; padding-bottom: 36px; }
  .hero { padding: 30px 28px; }
  .dashboard-current { grid-template-columns: 1fr; }
  .dashboard-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .about-grid { grid-template-columns: 1fr; }
  .course-dialog { width: min(860px, calc(100vw - 28px)); max-height: 94dvh; }
  .course-hero { padding: 28px 28px 24px; }
  .course-content { padding: 24px 28px 32px; }
  .course-tabs { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: thin; overscroll-behavior-inline: contain; }
  .course-tab { flex: 0 0 auto; white-space: nowrap; }
  .project-credit { padding-bottom: 12px; }
}

/* Tablet portrait / celular grande */
@media (max-width: 720px) {
  .view { padding-inline: 18px; }
  .topbar { padding-inline: 14px; gap: 9px; }
  .icon-btn { width: 40px; height: 40px; flex: 0 0 40px; }
  .search-wrap { min-width: 0; padding-inline: 12px; }
  .search-wrap input { font-size: 14px; }
  .hero { padding: 26px 22px; border-radius: 20px; }
  .hero::after { right: -10px; bottom: -50px; font-size: 135px; }
  .hero-actions .btn { flex: 1 1 180px; text-align: center; }
  .card-grid,
  .dashboard-grid { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .section-head { align-items: flex-start; flex-direction: column; }
  .semester-chips { width: 100%; flex-wrap: nowrap; overflow-x: auto; padding-bottom: 4px; scrollbar-width: thin; }
  .chip { flex: 0 0 auto; }
  .today-card,
  .review-row { align-items: flex-start; flex-direction: column; }
  .review-actions { width: 100%; }
  .review-actions .btn { flex: 1; }
  .two-col { grid-template-columns: 1fr; }
  .study-tips { position: static; }
  .flash-grid { grid-template-columns: 1fr; }
  .tab-heading { flex-direction: column; }
  .score-chip { align-self: flex-start; }
  .glossary-item { grid-template-columns: 1fr; align-items: start; }
  .glossary-item .btn { justify-self: start; }
  .audit-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* Mobile */
@media (max-width: 520px) {
  .sidebar { width: min(300px, 88vw); padding: 20px 16px; }
  .brand { padding-inline: 2px; }
  .nav-item { padding: 10px 11px; }
  .view { padding: 18px 14px 30px; }
  .topbar { padding: 9px 10px; }
  .search-wrap { border-radius: 12px; }
  .search-wrap input { font-size: 13px; }
  .hero { padding: 24px 18px; margin-bottom: 20px; }
  .hero h1,
  .top-section h1 { font-size: clamp(28px, 9vw, 34px); }
  .hero p { font-size: 14px; line-height: 1.6; }
  .hero-actions { gap: 8px; }
  .hero-actions .btn { width: 100%; flex-basis: 100%; }
  .stat-card { padding: 13px; }
  .stat-card strong { font-size: 21px; }
  .stat-card small { font-size: 11px; }
  .course-card { min-height: 0; padding: 15px; }
  .panel { padding: 16px; }
  .notice { padding: 13px 14px; }
  .empty { padding: 28px 18px; }
  .audit-grid,
  .class-plan-grid { grid-template-columns: 1fr; }
  .class-plan-grid .span-2 { grid-column: auto; }
  .course-dialog {
    width: 100vw;
    max-width: 100vw;
    height: 100dvh;
    max-height: 100dvh;
    margin: 0;
    border-radius: 0;
  }
  .course-hero { padding: 24px 18px 20px; }
  .course-hero h2 { font-size: clamp(22px, 7vw, 26px); padding-right: 38px; }
  .course-content { padding: 20px 16px 28px; }
  .dialog-close { top: 10px; margin: 10px 10px -46px 0; }
  .lesson-card summary { grid-template-columns: 32px minmax(0, 1fr); }
  .lesson-state { grid-column: 2; }
  .source-split { display: grid; grid-template-columns: auto minmax(0, 1fr); }
  .quiz-option { grid-template-columns: 18px minmax(0, 1fr); padding: 9px 10px; }
  .detail-table { font-size: 12px; }
  .detail-table th,
  .detail-table td { padding: 9px 7px; }
  .project-credit { padding: 14px 2px 8px; }
  .project-source,
  .project-note { font-size: 9px; }
}

/* Telefones estreitos */
@media (max-width: 360px) {
  .stat-grid { grid-template-columns: 1fr; }
  .icon-btn { width: 38px; height: 38px; flex-basis: 38px; }
  .topbar { gap: 7px; }
  .search-wrap { padding-inline: 10px; }
  .search-wrap span { display: none; }
  .hero { padding-inline: 16px; }
  .course-content { padding-inline: 13px; }
  .course-tab { padding: 7px 10px; font-size: 11px; }
}

/* Altura reduzida (tablets em paisagem e notebooks pequenos). */
@media (max-height: 760px) and (min-width: 961px) {
  .sidebar { gap: 18px; padding-top: 18px; padding-bottom: 18px; }
  .nav { gap: 5px; }
  .nav-item { padding-block: 9px; }
  .sidebar-footer { padding-top: 13px; }
  .mini-progress { margin-top: 12px; }
  .project-credit { margin-top: 12px; padding-top: 11px; }
  .project-source { font-size: 9px; line-height: 1.45; }
}

/* ===== v6 · aulas e conteúdo ===== */
.lesson-depth {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin: 2px 0 18px;
  padding: 7px 10px;
  border: 1px solid var(--line, #e7dfd7);
  border-radius: 999px;
  background: #f8f4ef;
  color: #6b4937;
}
.lesson-depth > span { font-size: 12px; font-weight: 800; letter-spacing: .02em; text-transform: uppercase; }
.lesson-depth > small { font-size: 12px; color: #7b7068; }
.lesson-depth.expanded { background: #f2ebe3; border-color: #d9c6b6; }
.lesson-section {
  margin: 0 0 18px;
  padding: 18px;
  border: 1px solid var(--line, #e7dfd7);
  border-radius: 16px;
  background: #fff;
}
.lesson-section h4,
.lesson-concepts h4 { margin: 0 0 10px; font-size: 15px; color: #3e312a; }
.lesson-section p { margin: 0 0 12px; line-height: 1.72; color: #514842; }
.lesson-section p:last-child { margin-bottom: 0; }
.lesson-section ul,
.lesson-section ol { margin: 0; padding-left: 20px; }
.lesson-section li { margin: 8px 0; line-height: 1.55; color: #514842; }
.lesson-concepts { margin: 0 0 18px; }
.concept-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.lesson-example { background: #faf7f2; border-left: 4px solid #9f765a; }
.lesson-remember { background: #f7f8f4; }
.lesson-review { background: #fbfaf8; }
.lesson-card[open] > summary { border-bottom-color: var(--line, #e7dfd7); }
.lesson-card .lesson-body { padding-top: 18px; }
.lesson-card summary > span:nth-child(2) { min-width: 0; }
.lesson-card summary { align-items: center; }

@media (max-width: 820px) {
  .concept-grid { grid-template-columns: 1fr; }
  .lesson-section { padding: 16px; border-radius: 14px; }
}

@media (max-width: 520px) {
  .lesson-depth { width: 100%; border-radius: 14px; align-items: flex-start; }
  .lesson-depth > small { width: 100%; }
  .lesson-section { padding: 14px; }
  .lesson-section p { line-height: 1.64; }
  .lesson-card summary { grid-template-columns: auto minmax(0,1fr); gap: 10px; }
  .lesson-card summary .lesson-state { grid-column: 2; justify-self: start; }
}