/* Courses: sign-in, the home grid, a course's Stream / Classwork / People, attendance. Same tokens as base.css. */

/* ---------- signed out: no sidebar, the sign-in page fills the window ---------- */
.app.signed-out { grid-template-columns: minmax(0, 1fr); }
.app.signed-out .sidebar { display: none; }
.auth { min-height: 100vh; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); }
.auth-side { display: flex; flex-direction: column; justify-content: center; gap: 18px; padding: 48px 7vw; }
.auth-tutor { width: 170px; height: 170px; }
.auth-tutor video { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; border: 6px solid var(--surface); box-shadow: var(--shadow); background: var(--surface-2); }
.auth-side h2 { font: 600 38px/1.15 var(--display); letter-spacing: -.02em; max-width: 520px; }
.auth-side .mark { color: inherit; }  /* no accented words: the sentence carries itself */
.auth-side p { margin: 0; max-width: 480px; color: var(--text-2); font-size: 15px; line-height: 1.6; }
.auth-main { display: grid; place-items: center; padding: 32px 16px; }
.auth-card { width: 100%; padding: 28px 28px 22px; border-radius: var(--radius-lg); }
.auth-form { display: flex; flex-direction: column; gap: 14px; }
.auth-form h1 { font: 600 28px var(--display); }
.auth-form > p.muted { margin: -8px 0 4px; }
.btn.block { width: 100%; }
.role-pick { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.role-card {
  display: flex; flex-direction: column; align-items: flex-start; gap: 4px; padding: 14px; border-radius: var(--radius); text-align: left;
  border: 1.5px solid var(--border-strong); background: var(--surface); cursor: pointer; transition: border-color .15s, background .15s;
}
.role-card svg { color: var(--muted); margin-bottom: 4px; }
.role-card strong { font-size: 13.5px; }
.role-card small { color: var(--muted); font-size: 12px; line-height: 1.4; }
.role-card.on { border-color: var(--primary); background: var(--primary-soft); }
.role-card.on svg { color: var(--primary); }
.auth-stack { width: min(440px, 100%); display: flex; flex-direction: column; gap: 14px; }
.demo-logins { padding: 16px 18px; border-radius: var(--radius-lg); border: 1px solid var(--border); background: var(--surface); display: flex; flex-direction: column; gap: 12px; }
.demo-head { font: 600 14px var(--font); color: var(--text); }
.demo-group { display: flex; flex-direction: column; gap: 6px; }
.demo-label { font-size: 12px; font-weight: 600; color: var(--muted); }
.demo-list { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.demo-chip { display: flex; align-items: center; gap: 9px; min-width: 0; padding: 6px 10px 6px 6px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--surface); cursor: pointer; text-align: left; transition: border-color .15s, background .15s; }
.demo-chip:hover { border-color: var(--primary); background: var(--primary-soft); }
.demo-text { display: flex; flex-direction: column; min-width: 0; line-height: 1.2; }
.demo-text strong { font-size: 12.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.demo-text small { font-size: 11px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.auth-switch { margin: 2px 0 0; text-align: center; }
.link-btn { border: 0; background: none; color: var(--primary); cursor: pointer; font-weight: 500; padding: 4px; }
.link-btn:hover { text-decoration: underline; }
@media (max-width: 860px) {
  .auth { grid-template-columns: 1fr; }
  .auth-side { padding: 32px 16px 0; align-items: center; text-align: center; }
  .auth-side h2 { font-size: 28px; } .auth-tutor { width: 110px; height: 110px; }
}

/* ---------- sidebar: courses and the signed-in person ---------- */
.lecture-link .name small { display: block; font-size: 11.5px; color: var(--muted); font-weight: 400; overflow: hidden; text-overflow: ellipsis; }
.count-dot { min-width: 20px; height: 20px; padding: 0 6px; border-radius: var(--radius); background: var(--accent); color: #fff; font-size: 11px; font-weight: 700; display: grid; place-items: center; }
.user-chip { display: flex; align-items: center; gap: 10px; padding: 6px 10px 8px; min-width: 0; }
.user-chip:empty { display: none; }
.user-text { display: flex; flex-direction: column; min-width: 0; line-height: 1.2; }
.user-text strong { font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.user-text small { color: var(--muted); font-size: 11.5px; }
.app.collapsed:not(.peek) .user-text, .app.collapsed:not(.peek) .count-dot { display: none; }
.app.collapsed:not(.peek) .user-chip { justify-content: center; padding: 6px 0; }

/* ---------- home ---------- */
.home-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin: 8px 0 22px; flex-wrap: wrap; }
.home-title { font: 600 34px/1.15 var(--display); letter-spacing: -.02em; }
.course-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.course-card { display: flex; flex-direction: column; overflow: hidden; color: var(--text); transition: transform .15s, box-shadow .15s, border-color .15s; }
.course-card:hover { border-color: var(--primary); }
/* A coloured spine along the top, like the cloth spine of a register; the subject's colour tells courses apart. */
.course-band { height: 5px; background: currentColor !important; }
.course-initials { display: none; }
.course-body { padding: 16px 18px 14px; display: flex; flex-direction: column; gap: 2px; flex: 1; }
.course-body h3 { font: 600 19px/1.25 var(--display); }
.course-body p { margin: 0; font-size: 13px; }
.course-foot { margin-top: auto; padding-top: 14px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; font-size: 12.5px; color: var(--text-2); }
.course-foot > span { display: inline-flex; align-items: center; gap: 5px; }
.course-foot svg { width: 14px; height: 14px; color: var(--muted); }
.code-chip { margin-left: auto; font: 600 12px var(--mono); padding: 3px 8px; border-radius: var(--radius-sm); background: var(--surface-2); border: 1px solid var(--border); letter-spacing: .06em; }
.todo-chip { padding: 3px 10px; border-radius: var(--radius); background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.done-chip { color: var(--success); font-weight: 500; }
.done-chip svg { color: var(--success) !important; }
.course-card.new-card { align-items: center; justify-content: center; gap: 8px; min-height: 150px; border: 1px dashed var(--border-strong); background: transparent; box-shadow: none; color: var(--muted); cursor: pointer; font: 500 14px var(--font); }
.course-card.new-card:hover { color: var(--primary); border-color: var(--primary); background: color-mix(in srgb, var(--primary-soft) 40%, transparent); }
.loose-head { margin: 30px 0 12px; }
.loose-head h2 { font: 600 21px var(--display); }
.loose-head p { margin: 2px 0 0; font-size: 13px; }
.loose-list { display: flex; flex-wrap: wrap; gap: 8px; }
.loose-item { display: inline-flex; align-items: center; gap: 9px; padding: 6px 12px 6px 6px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border); color: var(--text); box-shadow: var(--shadow-sm); }
.loose-item:hover { border-color: var(--border-strong); }
.code-input { font: 600 20px var(--mono); letter-spacing: .25em; text-transform: uppercase; text-align: center; height: 50px; }

/* ---------- a course ---------- */
.course-page { max-width: 1040px; }
.course-header {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding: 6px 0 18px;
  margin-bottom: 14px; border-bottom: 1px solid var(--border);
  background: none !important;  /* plain page: the subject colour stays on its spine and avatar */
}
.course-header-text { min-width: 0; color: var(--text); }
.course-header .crumb { font-size: 12.5px; color: var(--text-2); }
.course-header .crumb:hover { text-decoration: underline; }
.course-header h1 { font: 600 34px/1.15 var(--display); letter-spacing: -.02em; margin-top: 2px; }
.course-header p { margin: 4px 0 0; color: var(--text-2); }
.class-code { display: flex; align-items: center; gap: 6px; padding: 6px 6px 6px 14px; border-radius: var(--radius); background: var(--surface); color: var(--text); border: 1px solid var(--border); }
.class-code small { color: var(--muted); font-size: 11.5px; margin-right: 4px; }
.class-code .danger-icon:hover { background: var(--danger-soft); color: var(--danger); }
.class-code strong { font: 600 18px var(--mono); letter-spacing: .12em; margin-right: 4px; }
.course-tabs { margin-bottom: 18px; }

.stream, .classwork, .people { display: flex; flex-direction: column; gap: 14px; }
.composer { display: flex; align-items: center; gap: 12px; padding: 12px 14px; }
.composer-btn { flex: 1; text-align: left; border: 0; background: var(--surface-2); color: var(--muted); padding: 10px 16px; border-radius: var(--radius); cursor: pointer; }
.composer-btn:hover { color: var(--text); }
.post { display: flex; gap: 14px; padding: 18px 20px; }
.post-icon { width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; flex: none; background: var(--primary-soft); color: var(--primary); }
.post.is-material .post-icon { background: var(--warning-soft); color: var(--warning); }
.post-main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 10px; }
.post-top { display: flex; align-items: flex-start; gap: 10px; }
.post-title { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.post-title h3 { font: 600 17px/1.3 var(--display); }
.post-body { margin: 0; color: var(--text-2); white-space: pre-wrap; }
.due-chip { display: inline-flex; align-items: center; gap: 5px; padding: 3px 10px; border-radius: var(--radius); background: var(--accent-soft); color: var(--accent); font-size: 12px; font-weight: 600; white-space: nowrap; }
.due-chip svg { width: 13px; height: 13px; }
.post-files { display: flex; flex-wrap: wrap; gap: 8px; }
.file-chip { display: inline-flex; align-items: center; gap: 6px; padding: 5px 12px; border-radius: var(--radius); border: 1px solid var(--border-strong); background: var(--surface); color: var(--text); font-size: 12.5px; max-width: 260px; }
.file-chip:hover { border-color: var(--primary); color: var(--primary); }
.file-chip svg { width: 14px; height: 14px; }
.post-lesson { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; padding-top: 4px; }
.progress-line { flex: 1; min-width: 120px; height: 6px; border-radius: 3px; background: var(--surface-3); overflow: hidden; }
.progress-line i { display: block; height: 100%; background: var(--primary); border-radius: 3px; transition: width .3s; }
.progress-line.sm { min-width: 70px; max-width: 110px; display: inline-block; vertical-align: middle; margin-right: 6px; }
.att-tag { display: inline-flex; align-items: center; gap: 5px; padding: 3px 10px; border-radius: var(--radius); background: var(--surface-3); color: var(--text-2); font-size: 12px; font-weight: 600; white-space: nowrap; }
.att-tag svg { width: 13px; height: 13px; }
.att-tag.present { background: var(--success-soft); color: var(--success); }
.att-tag.started { background: var(--warning-soft); color: var(--warning); }

.classwork-bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.classwork-bar p { margin: 0; }
.chapter { padding: 18px 20px; display: flex; flex-direction: column; gap: 12px; }
.chapter-head, .topic-head { display: flex; align-items: center; gap: 10px; justify-content: space-between; flex-wrap: wrap; }
.chapter-head h3 { font: 600 20px var(--display); }
.row-actions { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.topic { border-top: 1px solid var(--border); padding-top: 12px; display: flex; flex-direction: column; gap: 8px; }
.topic-head h4 { font-size: 14.5px; font-weight: 600; }
.topic-empty { margin: 0; color: var(--muted); font-size: 13px; }
.lesson-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.lesson-row { display: flex; align-items: center; gap: 10px; padding: 8px 10px 8px 8px; border-radius: var(--radius-lg); background: var(--surface-2); flex-wrap: wrap; }
.lesson-icon { width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; background: var(--surface); color: var(--primary); flex: none; }
.lesson-icon.material { color: var(--warning); }
.lesson-icon svg { width: 16px; height: 16px; }
.lesson-name { flex: 1; min-width: 160px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.lesson-name strong { font-weight: 600; }
.kind-tag { display: inline-flex; align-items: center; gap: 5px; padding: 2px 9px; border-radius: var(--radius); font-size: 11.5px; font-weight: 600; white-space: nowrap; }
.kind-tag svg { width: 12px; height: 12px; }
.kind-tag.pre { background: var(--violet-soft); color: var(--violet); }
.kind-tag.lecture { background: var(--primary-soft); color: var(--primary); }
.post-kind { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 4px; }
.post.is-pre .post-icon { background: var(--violet-soft); color: var(--violet); }
.splash-kind { display: flex; flex-direction: column; align-items: center; gap: 4px; font-size: 12.5px; color: var(--muted); }

.people-list { list-style: none; margin: 0; padding: 8px 20px 14px; display: flex; flex-direction: column; }
.people-list li { display: flex; align-items: center; gap: 12px; padding: 9px 0; border-bottom: 1px solid var(--border); }
.people-list li:last-child { border-bottom: 0; }
.people-list .right { margin-left: auto; }
.people .topic-empty { padding: 14px 20px; }

/* ---------- attendance ---------- */
.modal.wide { width: min(860px, 100%); max-height: calc(100vh - 32px); display: flex; flex-direction: column; }
.modal.wide .modal-body { overflow-y: auto; }
.att-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.att-table th { text-align: left; font-size: 12px; font-weight: 600; color: var(--muted); padding: 6px 8px; border-bottom: 1px solid var(--border-strong); }
.att-table td { padding: 10px 8px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.att-table td strong { display: block; }
.passed-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); display: inline-block; }
.doubt-detail:empty { display: none; }
.doubt-detail { display: flex; flex-direction: column; gap: 10px; padding: 14px; border-radius: var(--radius-lg); background: var(--surface-2); }
.doubt-detail h4 { font: 600 15px var(--display); }
.doubt { padding: 10px 12px; border-radius: var(--radius-lg); background: var(--surface); }
.doubt p { margin: 0 0 4px; }
.doubt .q { font-weight: 600; }
.doubt .a { color: var(--text-2); white-space: pre-wrap; }

/* ---------- insights ---------- */
.insight-row { cursor: pointer; }
.insight-row:hover td { background: var(--surface-2); }
.heat { height: 4px; border-radius: 2px; background: var(--surface-3); margin-top: 6px; max-width: 220px; overflow: hidden; }
.heat i { display: block; height: 100%; background: var(--accent); }
.insight-detail:empty { display: none; }
.insight-detail { display: flex; flex-direction: column; gap: 8px; padding: 14px; border-radius: var(--radius-lg); background: var(--surface-2); }
.insight-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.insight-head h4 { font: 600 16px var(--display); }
.insight-label { font-size: 12px; font-weight: 600; color: var(--muted); margin-top: 4px; }
.insight-wait { display: flex; align-items: center; gap: 10px; color: var(--text-2); }
.doubt.resolved { opacity: .55; }
.safety-tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 2px 0 6px; }
.safety-tag { display: inline-flex; align-items: center; gap: 5px; padding: 2px 9px; border-radius: var(--radius); background: var(--warning-soft); color: var(--warning); font-size: 11.5px; font-weight: 600; }
.safety-tag.blocked { background: var(--danger-soft); color: var(--danger); }
.safety-tag svg, .safety-count svg { width: 12px; height: 12px; }
.safety-count { display: inline-flex; align-items: center; gap: 3px; margin-left: 4px; color: var(--danger); font-size: 11.5px; font-weight: 700; }
.check-field { display: flex; align-items: flex-start; gap: 9px; font-size: 13px; color: var(--text-2); cursor: pointer; }
.check-field input { margin-top: 3px; accent-color: var(--primary); }
.skip-toggle.on { color: var(--accent); }

/* ---------- script versions ---------- */
.version-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.version-row { display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: var(--radius-lg); background: var(--surface-2); flex-wrap: wrap; }
.version-row.shared { background: var(--success-soft); }
.version-num { width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; flex: none; background: var(--surface); font: 600 15px var(--display); color: var(--primary); }
.version-meta { flex: 1; min-width: 180px; display: flex; flex-direction: column; }
.version-reader:empty { display: none; }
.version-reader { border-top: 1px solid var(--border); padding-top: 10px; }
.version-reader-head { display: flex; align-items: center; justify-content: space-between; }
.version-reader .script-doc { padding: 8px 0 20px; }

/* ---------- the lesson: a student's progress on the splash ---------- */
.splash-progress { padding: 5px 12px; border-radius: var(--radius); background: var(--warning-soft); color: var(--warning); font-size: 12.5px; font-weight: 600; }
.splash-progress.done { background: var(--success-soft); color: var(--success); }
.file-input { height: auto; padding: 8px; }

@media (max-width: 760px) {
  .app .user-text, .app .count-dot { display: none; } .app .user-chip { justify-content: center; padding: 6px 0; }
  .course-header { padding: 22px 18px; } .course-header h1 { font-size: 26px; }
  .post { padding: 14px; } .home-title { font-size: 28px; }
}