/* Shared Home components: the student Home (pages/student.html) and the teacher Home
   (pages/teacher.html) use the same welcome area, main-action card, "at a glance" tiles,
   frosted cards over the live background (scripts/shared/home-background.js), avatars and
   coach lists, so both dashboards look like one product. Colours come from styles/theme.css. */

/* =====================================================================
   Avatars (scripts/shared/avatars.js): picture, built-in avatar or initials
   ===================================================================== */
.nf-avatar {
  --size: 34px;
  width: var(--size); height: var(--size); border-radius: 50%; flex: none; display: inline-grid; place-items: center; overflow: hidden;
  position: relative; font-size: calc(var(--size) * 0.37); font-weight: 700; letter-spacing: 0.02em; line-height: 1; user-select: none;
  color: #052e16; background: linear-gradient(135deg, #5eead4, #22c55e);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--text-main) 10%, transparent);
}
.nf-avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }
.nf-avatar svg { width: 58%; height: 58%; color: #fff; filter: drop-shadow(0 1px 1px rgba(0, 0, 0, 0.18)); }
.nf-avatar[data-kind="picture"] { background: var(--surface-sunken); }
.nf-avatar.sm { --size: 28px; }
.nf-avatar.lg { --size: 56px; }
.nf-avatar.xl { --size: 84px; }
.nf-avatar.xxl { --size: 120px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; }

/* =====================================================================
   Home (student-dashboard.js)
   ===================================================================== */
.text-link { display: inline-flex; align-items: center; gap: 6px; color: var(--accent); text-decoration: none; font-size: 13px; font-weight: 600; }
.text-link:hover { text-decoration: underline; text-underline-offset: 3px; }
.text-link .icon { width: 15px; height: 15px; }

/* Welcome area: the homepage hero's glow and gradient headline, without moving parts */
.home-hero {
  position: relative; isolation: isolate; overflow: hidden; border-radius: 22px; border: 1px solid var(--border);
  background:
    radial-gradient(ellipse 55% 80% at 88% 20%, var(--glow), transparent 70%),
    radial-gradient(ellipse 45% 60% at 0% 100%, color-mix(in srgb, var(--green) 7%, transparent), transparent 70%),
    linear-gradient(180deg, var(--surface), var(--surface-2));
}
.home-hero-art { position: absolute; inset: 0; z-index: -1; pointer-events: none; color: var(--accent); opacity: 0.55; }
.home-hero-art svg { position: absolute; right: -40px; top: -30px; width: min(560px, 70%); height: auto; }
.home-hero-inner { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; align-items: center; padding: 30px; }
.home-hero-hello { display: flex; gap: 22px; align-items: center; min-width: 0; }
.hero-avatar { position: relative; flex: none; border-radius: 50%; text-decoration: none; padding: 0; border: 0; background: none; cursor: pointer; }
.hero-avatar .nf-avatar { box-shadow: 0 0 0 4px var(--surface), 0 0 0 5px color-mix(in srgb, var(--accent) 45%, transparent), 0 12px 30px var(--glow); transition: transform 0.2s ease; }
.hero-avatar:hover .nf-avatar { transform: scale(1.03); }
.hero-avatar-edit {
  position: absolute; right: -2px; bottom: -2px; width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center;
  background: var(--primary-bg); color: var(--primary-text); border: 3px solid var(--surface); box-shadow: 0 4px 10px var(--shadow-color);
}
.hero-avatar-edit .icon { width: 13px; height: 13px; }
.hero-copy { min-width: 0; }
.eyebrow-pill {
  display: inline-flex; align-items: center; gap: 9px; font-size: 12.5px; font-weight: 500; color: var(--text-soft); margin-bottom: 12px;
  background: var(--surface-glass); border: 1px solid var(--border-strong); border-radius: 999px; padding: 4px 12px 4px 5px; backdrop-filter: blur(8px);
}
.eyebrow-pill .tag { font-size: 11px; font-weight: 700; letter-spacing: 0.3px; color: #052e16; background: var(--green); border-radius: 999px; padding: 2px 8px; }
.home-hero .welcome-title { font-size: clamp(26px, 3vw, 36px); line-height: 1.1; letter-spacing: -0.035em; overflow-wrap: anywhere; }
.gradient-name {
  background: linear-gradient(100deg, var(--text-main) 0%, color-mix(in srgb, var(--accent) 55%, var(--text-main)) 55%, var(--accent) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-lead { font-size: 14.5px; color: var(--text-soft); line-height: 1.6; margin-top: 8px; max-width: 520px; }
.hero-links { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-top: 14px; }

/* The one main action */
.next-card {
  position: relative; padding: 20px; border-radius: 18px; min-width: 0;
  background: var(--surface-glass); border: 1px solid var(--border-strong); backdrop-filter: blur(12px);
  box-shadow: 0 16px 40px color-mix(in srgb, var(--shadow-color) 60%, transparent);
}
.next-card[data-kind="live"] { border-color: color-mix(in srgb, var(--red) 45%, var(--border-strong)); background: linear-gradient(140deg, color-mix(in srgb, var(--red) 12%, var(--surface)), var(--surface)); }
.next-card[data-kind="in-session"] { border-color: color-mix(in srgb, var(--green) 45%, var(--border-strong)); background: linear-gradient(140deg, color-mix(in srgb, var(--green) 12%, var(--surface)), var(--surface)); }
.next-card.is-updating { animation: next-in 0.35s ease; }
@keyframes next-in { from { opacity: 0.4; transform: translateY(4px); } to { opacity: 1; transform: none; } }
.next-kicker { display: flex; align-items: center; gap: 8px; font-size: 11.5px; font-weight: 700; letter-spacing: 0.7px; text-transform: uppercase; color: var(--text-muted); }
.next-card[data-kind="live"] .next-kicker { color: var(--danger-text); }
.next-card[data-kind="in-session"] .next-kicker { color: var(--success-text); }
.next-icon {
  float: right; width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; margin: 0 0 8px 12px;
  color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, transparent); border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
}
.next-card[data-kind="live"] .next-icon { color: var(--danger-text); background: color-mix(in srgb, var(--red) 10%, transparent); border-color: color-mix(in srgb, var(--red) 30%, transparent); }
.next-card[data-kind="in-session"] .next-icon { color: var(--success-text); background: color-mix(in srgb, var(--green) 10%, transparent); border-color: color-mix(in srgb, var(--green) 30%, transparent); }
.next-icon svg { width: 19px; height: 19px; }
.next-title { font-size: 19px; font-weight: 700; letter-spacing: -0.3px; line-height: 1.3; margin-top: 6px; overflow-wrap: anywhere; }
.next-sub { font-size: 13.5px; color: var(--text-soft); line-height: 1.5; margin-top: 6px; }
.next-sub:empty { display: none; }
.next-buttons { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; clear: both; }
.next-buttons .btn-primary, .next-buttons .btn-join { padding: 11px 18px; font-size: 14px; }
.next-skeleton { display: block; height: 12px; border-radius: 6px; background: var(--track); margin-top: 10px; }
.next-skeleton.short { width: 60%; }

.live-dot.static { animation: none; box-shadow: 0 0 0 3px color-mix(in srgb, var(--red) 22%, transparent); }

.home-grid { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(300px, 1fr); gap: 20px; align-items: start; }
.home-col { display: flex; flex-direction: column; gap: 20px; min-width: 0; }
.home-card { transition: border-color 0.2s ease; }
h2.panel-title { margin: 0; }

/* Entrance: cards settle in once when Home opens (not on every update) */
.view.is-entering .home-hero, .view.is-entering .home-card { animation: card-in 0.5s cubic-bezier(0.2, 0.7, 0.2, 1) both; animation-delay: calc(var(--d, 0) * 70ms); }
@keyframes card-in { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

/* Friendly empty state for new students */
.welcome-empty {
  grid-column: 1 / -1; display: flex; flex-direction: column; align-items: center; text-align: center; gap: 8px; padding: 30px 20px;
  border-radius: 16px; border: 1px dashed var(--border-strong); background: radial-gradient(ellipse at 50% 0%, var(--glow-soft), transparent 70%), var(--surface-sunken);
}
.welcome-empty .chip-icon { width: 52px; height: 52px; border-radius: 16px; margin-bottom: 4px; }
.welcome-empty .chip-icon svg { width: 24px; height: 24px; }
.welcome-empty b { font-size: 16px; }
.welcome-empty p { font-size: 13.5px; color: var(--text-muted); max-width: 420px; line-height: 1.55; }
.welcome-empty .btn-primary { margin-top: 8px; }

/* Focus coach */
.coach-card { background: radial-gradient(ellipse 60% 80% at 0% 0%, color-mix(in srgb, var(--green) 6%, transparent), transparent 70%), linear-gradient(180deg, var(--surface), var(--surface-2)); }
.coach-card .panel-head .text-link { flex: none; margin-top: 4px; }
.coach-progress { margin: -4px 0 16px; padding: 12px 14px; border-radius: 12px; background: var(--surface-sunken); border: 1px solid var(--border); }
.coach-progress p { font-size: 13px; color: var(--text-soft); line-height: 1.5; }
.coach-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.coach-heading { display: flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 700; letter-spacing: 0.6px; text-transform: uppercase; color: var(--success-text); margin-bottom: 10px; }
.coach-heading.tips { color: var(--accent); }
.coach-heading .icon { width: 15px; height: 15px; }
.coach-card[data-stage="starter"] .coach-heading.tips::after { content: "General tips"; margin-left: auto; font-size: 11px; letter-spacing: 0.3px; text-transform: none; font-weight: 600; color: var(--text-muted); padding: 2px 8px; border: 1px solid var(--border-strong); border-radius: 999px; }
.coach-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.coach-item { display: flex; gap: 12px; align-items: flex-start; padding: 12px 14px; border-radius: 12px; background: var(--surface-sunken); border: 1px solid var(--border); }
.coach-item.win { border-left: 3px solid color-mix(in srgb, var(--green) 70%, transparent); }
.coach-item.tip { border-left: 3px solid color-mix(in srgb, var(--accent) 70%, transparent); }
.coach-item.tip[data-tone="amber"] { border-left-color: color-mix(in srgb, var(--amber) 80%, transparent); }
.coach-item .chip-icon { width: 30px; height: 30px; border-radius: 9px; }
.coach-item .chip-icon svg { width: 15px; height: 15px; }
.coach-text { min-width: 0; }
.coach-text b { display: block; font-size: 13.5px; font-weight: 650; line-height: 1.4; }
.coach-text p { font-size: 12.5px; color: var(--text-muted); line-height: 1.5; margin-top: 2px; }
.coach-text .btn-action { margin-top: 10px; padding: 6px 11px; font-size: 12.5px; }
.view.is-entering .coach-card { animation-delay: 300ms; }
@media (max-width: 900px) { .coach-grid { grid-template-columns: 1fr; } }

/* ---------- Home: live background + frosted cards ---------- */
.home-bg { position: fixed; top: 0; z-index: 0; pointer-events: none; }
.portal-main { position: relative; z-index: 1; }
[data-live-background] .home-hero,
[data-live-background] .home-card:is(.panel-card, .home-panel),
[data-live-background] .glance-tile {
  background:
    radial-gradient(420px circle at var(--mx, -999px) var(--my, -999px), color-mix(in srgb, var(--accent) 9%, transparent), transparent 60%),
    linear-gradient(180deg, color-mix(in srgb, var(--surface) 80%, transparent), color-mix(in srgb, var(--surface-2) 80%, transparent));
  -webkit-backdrop-filter: blur(18px) saturate(1.15);
  backdrop-filter: blur(18px) saturate(1.15);
}
[data-live-background] .home-hero {
  background:
    radial-gradient(420px circle at var(--mx, -999px) var(--my, -999px), color-mix(in srgb, var(--accent) 8%, transparent), transparent 60%),
    radial-gradient(ellipse 55% 80% at 88% 20%, var(--glow), transparent 70%),
    linear-gradient(180deg, color-mix(in srgb, var(--surface) 72%, transparent), color-mix(in srgb, var(--surface-2) 72%, transparent));
}
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  [data-live-background] .home-hero, [data-live-background] .home-card:is(.panel-card, .home-panel), [data-live-background] .glance-tile { background: var(--surface); }
}
[data-live-background] .home-card { transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease; }
[data-live-background] .home-card:is(.panel-card, .home-panel):hover { border-color: color-mix(in srgb, var(--accent) 28%, var(--border)); box-shadow: 0 14px 40px color-mix(in srgb, var(--shadow-color) 45%, transparent); }

/* ---------- Home: symmetric rows ---------- */
.home-pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; align-items: stretch; }
.home-pair > .buddy-entry { justify-content: center; }

/* ---------- Home: at a glance ---------- */
.glance { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.glance-tile > .glance-note:last-child { margin-top: auto; }
.glance-tile {
  position: relative; display: flex; flex-direction: column; gap: 6px; min-width: 0; padding: 18px; border-radius: 18px;
  border: 1px solid var(--border); color: inherit; text-decoration: none;
}
.glance-tile:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--accent) 35%, var(--border)); box-shadow: 0 16px 36px color-mix(in srgb, var(--shadow-color) 50%, transparent); }
.glance-tile:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.glance-label { display: flex; align-items: center; gap: 7px; font-size: 12px; font-weight: 650; letter-spacing: 0.4px; text-transform: uppercase; color: var(--text-muted); }
.glance-label .icon { width: 15px; height: 15px; color: var(--accent); }
.glance-value { font-size: 28px; font-weight: 750; letter-spacing: -0.03em; line-height: 1.15; font-variant-numeric: tabular-nums; }
.glance-value-sm { font-size: 17px; font-weight: 700; letter-spacing: -0.2px; }
.glance-note { font-size: 12px; color: var(--text-muted); line-height: 1.4; }
.glance-note[data-trend="up"] { color: var(--success-text); }
.glance-note[data-trend="down"] { color: var(--warning-text); }

/* Score ring */
.score-tile { flex-direction: row; align-items: center; gap: 16px; }
.score-ring { position: relative; width: 104px; height: 104px; flex: none; }
.score-ring svg { width: 100%; height: 100%; transform: rotate(-90deg); overflow: visible; }
.score-ring circle { fill: none; stroke-width: 9; }
.score-track { stroke: var(--track); }
.score-fill {
  stroke: url(#scoreGradient); stroke-linecap: round; stroke-dasharray: 314.16; stroke-dashoffset: 314.16;
  transition: stroke-dashoffset 1.3s cubic-bezier(0.2, 0.7, 0.2, 1); filter: drop-shadow(0 0 6px color-mix(in srgb, var(--accent) 45%, transparent));
}
.score-center { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.score-center strong { font-size: 30px; font-weight: 800; letter-spacing: -0.04em; line-height: 1; font-variant-numeric: tabular-nums; }
.score-center small { font-size: 10.5px; font-weight: 650; letter-spacing: 0.6px; text-transform: uppercase; color: var(--text-muted); margin-top: 3px; }
.glance-text { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.score-tile[data-level="great"] .glance-value-sm { color: var(--success-text); }
.score-tile[data-level="good"] .glance-value-sm { color: var(--info-text); }
.score-tile[data-level="mixed"] .glance-value-sm { color: var(--warning-text); }
.score-tile[data-level="tough"] .glance-value-sm { color: var(--danger-text); }

/* This week's bars */
.glance-bars { display: flex; align-items: flex-end; gap: 5px; height: 40px; margin: 2px 0 2px; }
.glance-bar {
  flex: 1; height: var(--h); border-radius: 4px 4px 2px 2px; transform-origin: bottom;
  background: linear-gradient(180deg, var(--accent), color-mix(in srgb, var(--accent) 45%, transparent));
  animation: bar-grow 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) both; animation-delay: calc(var(--i) * 60ms + 200ms);
}
.glance-bar[data-empty="true"] { background: var(--track); }
.glance-bar[data-today="true"] { box-shadow: 0 0 10px color-mix(in srgb, var(--accent) 55%, transparent); }
@keyframes bar-grow { from { transform: scaleY(0); } to { transform: scaleY(1); } }

/* Streak dots */
.glance-days { display: flex; gap: 5px; margin: 4px 0; }
.glance-day {
  flex: 1; aspect-ratio: 1; max-width: 30px; border-radius: 50%; display: grid; place-items: center; font-size: 10px; font-weight: 700;
  color: var(--text-faint); background: var(--surface-sunken); border: 1px solid var(--border);
  animation: dot-pop 0.45s cubic-bezier(0.3, 1.4, 0.5, 1) both; animation-delay: calc(var(--i) * 50ms + 200ms);
}
.glance-day[data-on="true"] { color: #052e16; background: linear-gradient(135deg, #5eead4, var(--green)); border-color: transparent; }
.glance-day[data-today="true"] { box-shadow: 0 0 0 2px var(--surface), 0 0 0 3px var(--accent); }
@keyframes dot-pop { from { transform: scale(0.4); opacity: 0; } to { transform: none; opacity: 1; } }

/* Timer tile */
.timer-tile[data-state="running"] { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); box-shadow: 0 0 0 4px var(--glow-soft); }
.timer-tile[data-state="break"] { border-color: color-mix(in srgb, var(--green) 45%, var(--border)); }
.timer-tile[data-state="running"] .glance-value { color: var(--accent); }
.timer-tile[data-state="paused"] .glance-value { color: var(--warning-text); }
.tracking-note[data-state="on"] { color: var(--success-text); }

@media (prefers-reduced-motion: reduce) {
  .glance-bar, .glance-day { animation: none; }
  .score-fill { transition: none; }
  .glance-tile:hover { transform: none; }
}
@media (max-width: 1100px) {
  .glance { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 860px) {
  .home-pair { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .glance { gap: 12px; }
  .glance-tile { padding: 14px; }
  .score-tile { grid-column: 1 / -1; }
  .glance-value { font-size: 22px; }
}


/* List rows: Continue where you left off (student) and Recent sessions (teacher) */
.continue-list { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.continue-item {
  display: flex; align-items: center; gap: 12px; width: 100%; padding: 10px; border-radius: 12px; border: 1px solid transparent;
  background: none; color: inherit; text-align: left; text-decoration: none; cursor: pointer; transition: background 0.15s ease, border-color 0.15s ease;
}
.continue-item:hover { background: var(--surface-sunken); border-color: var(--border); }
.continue-item .chip-icon { width: 34px; height: 34px; }
.continue-text { flex: 1; min-width: 0; }
.continue-text b { display: block; font-size: 13.5px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.continue-text small { display: block; font-size: 12px; color: var(--text-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.continue-item .chevron { flex: none; }



/* ---------- Teacher Home (teacher-home.js) ---------- */
button.text-link { border: 0; background: none; padding: 0; font: inherit; font-size: 13px; font-weight: 600; cursor: pointer; }
.continue-item .chevron { width: 16px; height: 16px; color: var(--text-muted); flex: none; }
.btn-sm { padding: 7px 12px !important; font-size: 12.5px !important; }
.count-badge {
  display: inline-grid; place-items: center; min-width: 22px; height: 22px; padding: 0 7px; border-radius: 999px; font-size: 11.5px; font-weight: 750;
  color: #3a2300; background: var(--amber); font-variant-numeric: tabular-nums;
}
.list-more { display: flex; justify-content: center; padding-top: 4px; }
.btn-live-sm {
  display: inline-flex; align-items: center; gap: 7px; padding: 7px 12px; border-radius: 8px; font-size: 12.5px; font-weight: 650; cursor: pointer;
  color: var(--danger-text); background: color-mix(in srgb, var(--red) 12%, transparent); border: 1px solid color-mix(in srgb, var(--red) 45%, transparent);
}
.btn-live-sm .icon { width: 15px; height: 15px; }

/* Live banner (only while a session runs) */
.live-banner {
  display: flex; align-items: center; gap: 16px; padding: 16px 20px; border-radius: 18px;
  border: 1px solid color-mix(in srgb, var(--red) 45%, var(--border));
  background: linear-gradient(120deg, color-mix(in srgb, var(--red) 14%, var(--surface)), var(--surface) 70%) !important;
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--red) 8%, transparent);
}
.live-banner-icon { width: 44px; height: 44px; border-radius: 13px; display: grid; place-items: center; flex: none; color: var(--danger-text); background: color-mix(in srgb, var(--red) 12%, transparent); border: 1px solid color-mix(in srgb, var(--red) 30%, transparent); }
.live-banner-icon svg { width: 21px; height: 21px; }
.live-banner-text { flex: 1; min-width: 0; }
.live-banner-kicker { display: flex; align-items: center; gap: 8px; font-size: 11.5px; font-weight: 700; letter-spacing: 0.7px; text-transform: uppercase; color: var(--danger-text); }
.live-banner h2 { font-size: 17px; font-weight: 700; letter-spacing: -0.2px; margin-top: 2px; overflow-wrap: anywhere; }
.live-banner-text > p:last-child { font-size: 13px; color: var(--text-soft); margin-top: 2px; }

/* Welcome: smaller than the student Home, with four compact quick actions */
.teacher-hero .home-hero-inner { grid-template-columns: minmax(0, 1fr) auto; padding: 22px 26px; gap: 20px 28px; }
.teacher-hero .home-hero-hello { gap: 16px; }
.teacher-hero .welcome-title { font-size: clamp(22px, 2.4vw, 30px); }
.teacher-hero .hero-lead { margin-top: 4px; font-size: 14px; }
.hero-date { font-size: 12px; font-weight: 650; letter-spacing: 0.5px; text-transform: uppercase; color: var(--text-muted); margin-bottom: 4px; }
.quick-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.quick-action {
  display: flex; align-items: center; gap: 10px; min-width: 0; padding: 9px 14px 9px 9px; border-radius: 12px; text-align: left; font: inherit; color: inherit; cursor: pointer;
  background: var(--surface-glass); border: 1px solid var(--border-strong); backdrop-filter: blur(10px);
  transition: border-color 0.15s ease, transform 0.15s ease, background 0.15s ease;
}
.quick-action .chip-icon { width: 30px; height: 30px; border-radius: 9px; }
.quick-action .chip-icon svg { width: 15px; height: 15px; }
.quick-action b { font-size: 13.5px; font-weight: 600; white-space: nowrap; }
.quick-action:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--border-strong)); transform: translateY(-1px); }
.quick-action:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.quick-action[data-live="true"] { border-color: color-mix(in srgb, var(--red) 45%, var(--border-strong)); background: color-mix(in srgb, var(--red) 9%, var(--surface-glass)); }

/* The two main panels */
.home-main { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(320px, 1fr); gap: 20px; align-items: start; }

/* Class switcher: one colour per class (--hue, set by teacher-home.js) */
.cs-badge {
  width: 26px; height: 26px; border-radius: 8px; display: inline-grid; place-items: center; flex: none; font-size: 12px; font-weight: 750;
  color: #0b0d12; background: linear-gradient(135deg, hsl(var(--hue, 190) 85% 72%), hsl(calc(var(--hue, 190) + 30) 75% 60%));
}
.cs-badge.lg { width: 48px; height: 48px; border-radius: 14px; font-size: 20px; box-shadow: 0 10px 24px hsl(var(--hue, 190) 70% 50% / 0.25); }
.cs-strip { display: flex; align-items: center; gap: 8px; margin: -4px 0 16px; }
.cs-tabs {
  flex: 1; min-width: 0; display: flex; gap: 6px; padding: 4px; overflow-x: auto; scrollbar-width: none;
  background: var(--surface-sunken); border: 1px solid var(--border); border-radius: 14px;
}
.cs-tabs::-webkit-scrollbar { display: none; }
.cs-tab {
  flex: none; display: inline-flex; align-items: center; gap: 8px; max-width: 220px; padding: 6px 12px 6px 6px; border-radius: 10px; border: 1px solid transparent;
  background: none; color: var(--text-muted); font: inherit; font-size: 13px; font-weight: 600; cursor: pointer; transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.cs-tab:hover { color: var(--text-main); background: var(--surface-hover); }
.cs-tab[aria-selected="true"] {
  color: var(--text-main); background: var(--surface-raised); border-color: hsl(var(--hue) 70% 60% / 0.45);
  box-shadow: 0 4px 14px color-mix(in srgb, var(--shadow-color) 40%, transparent);
}
.cs-tab:not([aria-selected="true"]) .cs-badge { filter: saturate(0.55) brightness(0.9); }
.cs-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cs-online { display: inline-flex; align-items: center; gap: 4px; font-size: 11px; font-weight: 700; color: var(--success-text); font-variant-numeric: tabular-nums; }
.cs-online::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--green); }
.cs-add {
  flex: none; width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; cursor: pointer; color: var(--text-soft);
  background: transparent; border: 1px dashed var(--border-strong); transition: color 0.15s ease, border-color 0.15s ease;
}
.cs-add:hover { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 50%, var(--border)); }

.cs-detail { display: flex; flex-direction: column; gap: 16px; }
.cs-detail.is-switching { animation: cs-in 0.3s cubic-bezier(0.2, 0.7, 0.2, 1); }
@keyframes cs-in { from { opacity: 0; transform: translateX(8px); } to { opacity: 1; transform: none; } }
.cs-head { display: flex; align-items: center; gap: 14px; min-width: 0; }
.cs-title { flex: 1; min-width: 0; }
.cs-title h3 { font-size: 19px; font-weight: 700; letter-spacing: -0.3px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cs-title p { font-size: 13px; color: var(--text-muted); margin-top: 2px; }
.cs-title .online { color: var(--success-text); }
.cs-code {
  flex: none; display: inline-flex; align-items: center; gap: 6px; padding: 7px 11px; border-radius: 9px; cursor: pointer;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, transparent); border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
  transition: background 0.15s ease, color 0.15s ease;
}
.cs-code:hover { background: color-mix(in srgb, var(--accent) 15%, transparent); }
.cs-code .icon { width: 14px; height: 14px; }
.cs-code[data-copied="true"] { color: var(--success-text); border-color: color-mix(in srgb, var(--green) 40%, transparent); background: color-mix(in srgb, var(--green) 10%, transparent); font-family: inherit; font-weight: 650; }

.cs-live {
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding: 12px 14px; border-radius: 12px;
  background: var(--surface-sunken); border: 1px solid var(--border);
}
.cs-live p { flex: 1; min-width: 200px; font-size: 13px; color: var(--text-soft); line-height: 1.45; }
.cs-live p b { color: var(--text-main); font-weight: 650; }
.cs-live[data-live="true"] { border-color: color-mix(in srgb, var(--red) 40%, var(--border)); background: color-mix(in srgb, var(--red) 7%, var(--surface-sunken)); }
.cs-live[data-live="true"] p b { color: var(--danger-text); margin-left: 8px; }
.cs-live-buttons { display: flex; gap: 8px; flex-wrap: wrap; }

.cs-stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.cs-stat {
  display: flex; flex-direction: column; gap: 3px; min-width: 0; padding: 12px; border-radius: 12px; text-align: left; font: inherit; color: inherit; cursor: pointer;
  background: var(--surface-sunken); border: 1px solid var(--border); transition: border-color 0.15s ease, transform 0.15s ease;
}
.cs-stat:hover { border-color: hsl(var(--hue) 60% 60% / 0.5); transform: translateY(-2px); }
.cs-stat-label { font-size: 11px; font-weight: 650; letter-spacing: 0.4px; text-transform: uppercase; color: var(--text-muted); }
.cs-stat b { font-size: 22px; font-weight: 750; letter-spacing: -0.03em; line-height: 1.2; font-variant-numeric: tabular-nums; }
.cs-stat small { font-size: 11.5px; color: var(--text-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cs-stat[data-tone="amber"] { border-color: color-mix(in srgb, var(--amber) 40%, var(--border)); }
.cs-stat[data-tone="amber"] b { color: var(--warning-text); }
.cs-bars { display: flex; align-items: flex-end; gap: 3px; height: 18px; }
.cs-bars i {
  flex: 1; height: var(--h); border-radius: 2px; transform-origin: bottom; background: hsl(var(--hue) 70% 62% / 0.85);
  animation: bar-grow 0.5s cubic-bezier(0.2, 0.7, 0.2, 1) both; animation-delay: calc(var(--i) * 40ms);
}
.cs-meter { display: block; height: 6px; margin: 6px 0; border-radius: 999px; background: var(--track); overflow: hidden; }
.cs-meter i { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--accent), var(--green)); }

.cs-next h4 { font-size: 11.5px; font-weight: 700; letter-spacing: 0.6px; text-transform: uppercase; color: var(--text-muted); margin-bottom: 8px; }
.cs-next ul { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.cs-next-item {
  width: 100%; display: flex; align-items: center; gap: 12px; padding: 8px 10px; border-radius: 12px; text-align: left; font: inherit; color: inherit; cursor: pointer;
  background: none; border: 1px solid var(--border); transition: border-color 0.15s ease, background 0.15s ease;
}
.cs-next-item:hover { background: var(--surface-sunken); border-color: var(--border-hover); }
.cs-next-item[data-state="closed"] { opacity: 0.75; }
.cs-next-item[data-state="soon"] .date-block { border-color: color-mix(in srgb, var(--amber) 50%, var(--border)); }
.cs-next-item[data-state="soon"] .date-block small { color: var(--warning-text); }
.cs-next-item .chip-icon { width: 40px; height: 40px; }
.cs-next-text { flex: 1; min-width: 0; }
.cs-next-text b { display: block; font-size: 13.5px; font-weight: 650; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cs-next-text small { display: block; font-size: 12px; color: var(--text-muted); margin-top: 1px; }
.cs-next-empty { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding: 12px 14px; border-radius: 12px; border: 1px dashed var(--border-strong); font-size: 13px; color: var(--text-muted); }
.date-block {
  width: 42px; flex: none; display: flex; flex-direction: column; align-items: center; padding: 4px 0; border-radius: 10px;
  background: var(--surface); border: 1px solid var(--border-strong);
}
.date-block small { font-size: 10px; font-weight: 700; letter-spacing: 0.5px; text-transform: uppercase; color: var(--accent); }
.date-block b { font-size: 17px; font-weight: 750; line-height: 1.1; font-variant-numeric: tabular-nums; }
.upcoming-progress { display: block; height: 4px; border-radius: 999px; background: var(--track); margin-top: 6px; overflow: hidden; }
.upcoming-progress::before { content: ""; display: block; height: 100%; width: var(--p, 0%); border-radius: inherit; background: linear-gradient(90deg, var(--green), color-mix(in srgb, var(--green) 55%, var(--accent))); }

/* Needs your attention */
.todo-list, .activity-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.todo-item {
  display: flex; align-items: center; gap: 12px; padding: 11px 12px; border-radius: 12px;
  background: var(--surface-sunken); border: 1px solid var(--border); border-left: 3px solid color-mix(in srgb, var(--accent) 60%, transparent);
}
.todo-item[data-tone="amber"] { border-left-color: var(--amber); }
.todo-item[data-tone="red"] { border-left-color: var(--red); }
.todo-item .chip-icon, .todo-item .nf-avatar { --size: 32px; width: 32px; height: 32px; border-radius: 9px; }
.todo-item .nf-avatar { border-radius: 50%; }
.todo-item .chip-icon svg { width: 16px; height: 16px; }
.todo-text { flex: 1; min-width: 0; }
.todo-text b { display: block; font-size: 13.5px; font-weight: 650; line-height: 1.35; overflow-wrap: anywhere; }
.todo-text small { display: block; font-size: 12px; color: var(--text-muted); line-height: 1.45; margin-top: 2px; overflow-wrap: anywhere; }
.todo-item > button { flex: none; }
.todo-done { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 6px; padding: 26px 16px; border-radius: 12px; background: var(--surface-sunken); border: 1px dashed var(--border-strong); }
.todo-done b { font-size: 14.5px; }
.todo-done small { font-size: 12.5px; color: var(--text-muted); }

/* More: insights and recent activity, folded away */
.home-more { border-radius: 16px; border: 1px solid var(--border); }
.home-more summary { display: flex; align-items: center; gap: 12px; padding: 16px 20px; cursor: pointer; list-style: none; border-radius: 16px; }
.home-more summary::-webkit-details-marker { display: none; }
.home-more summary:hover { background: color-mix(in srgb, var(--surface-hover) 50%, transparent); }
.home-more summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.home-more-text { flex: 1; min-width: 0; }
.home-more-text b { display: block; font-size: 14.5px; font-weight: 650; }
.home-more-text small { display: block; font-size: 12.5px; color: var(--text-muted); margin-top: 1px; }
.home-more-chevron { width: 18px; height: 18px; color: var(--text-muted); transition: transform 0.2s ease; }
.home-more[open] .home-more-chevron { transform: rotate(180deg); }
.home-more-body { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; padding: 4px 20px 20px; }
.home-more[open] .home-more-body { animation: card-in 0.3s ease both; }
.more-heading { font-size: 12px; font-weight: 700; letter-spacing: 0.6px; text-transform: uppercase; color: var(--text-soft); }
.home-more-body .panel-sub { margin: 2px 0 12px; }
.home-more-body .coach-list + .coach-list { margin-top: 8px; }
.activity-item {
  display: flex; align-items: center; gap: 12px; width: 100%; padding: 8px 10px; border-radius: 12px; border: 1px solid transparent;
  background: none; color: inherit; font: inherit; text-align: left; cursor: pointer; transition: background 0.15s ease, border-color 0.15s ease;
}
.activity-item:hover { background: var(--surface-sunken); border-color: var(--border); }
.activity-item .chip-icon, .activity-item .nf-avatar { --size: 32px; width: 32px; height: 32px; }
.activity-item .chip-icon svg { width: 15px; height: 15px; }
.activity-item .chevron { width: 16px; height: 16px; color: var(--text-muted); flex: none; }
.activity-list { gap: 2px; }

/* Class picker for quick actions */
.pick-list { list-style: none; display: flex; flex-direction: column; gap: 6px; max-height: 50vh; overflow-y: auto; }
.pick-item {
  width: 100%; display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: 11px; text-align: left; font: inherit; color: inherit; cursor: pointer;
  background: var(--surface-sunken); border: 1px solid var(--border);
}
.pick-item:hover, .pick-item:focus-visible { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); outline: none; }
.pick-item .cs-badge { width: 34px; height: 34px; border-radius: 10px; font-size: 14px; }
.pick-text { flex: 1; min-width: 0; }
.pick-text b { display: block; font-size: 14px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pick-text small { display: block; font-size: 12px; color: var(--text-muted); }
.pick-item .chevron { width: 16px; height: 16px; color: var(--text-muted); flex: none; }

@media (max-width: 1180px) {
  .home-main { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 860px) {
  .teacher-hero .home-hero-inner { grid-template-columns: 1fr; }
  .home-more-body { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 640px) {
  .cs-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cs-head { flex-wrap: wrap; }
  .cs-code { order: 3; }
  .cs-live-buttons { width: 100%; }
  .cs-live-buttons > * { flex: 1; }
}
@media (max-width: 560px) {
  .teacher-hero .home-hero-inner { padding: 18px 16px; }
  .teacher-hero .home-hero-hello { flex-direction: row; align-items: center; }
  .quick-action { padding: 8px 10px 8px 8px; }
  .quick-action b { font-size: 12.5px; white-space: normal; }
  .live-banner { flex-wrap: wrap; }
  .live-banner .btn-primary { width: 100%; }
  .todo-item { flex-wrap: wrap; }
  .todo-item > button { margin-left: 44px; }
  .home-more summary { padding: 14px 16px; }
  .home-more-body { padding: 4px 16px 16px; }
}
@media (prefers-reduced-motion: reduce) {
  .quick-action:hover, .cs-stat:hover { transform: none; }
  .cs-detail.is-switching, .home-more[open] .home-more-body, .cs-bars i { animation: none; }
  .home-more-chevron { transition: none; }
}

/* Home motion and small screens (kept with the components they adjust) */
@media (prefers-reduced-motion: reduce) {
  .view.is-entering .home-hero, .view.is-entering .home-card, .next-card.is-updating { animation: none; }
  .hero-avatar:hover .nf-avatar { transition: none; transform: none; }
}
@media (max-width: 1100px) {
  .home-hero-inner { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .home-hero-inner { padding: 22px 18px; gap: 20px; }
  .home-hero-hello { gap: 16px; }
  .hero-avatar .nf-avatar.xl { --size: 64px; }
}
@media (max-width: 640px) {
  .home-hero-hello { flex-direction: column; align-items: flex-start; }
}

/* =====================================================================
   Shared page parts: the other pages of both dashboards (student Focus session, NeuroBuddy,
   Class notes, My progress; teacher All students and Attendance report) open with a page header
   built on .home-hero, use plain "at a glance" tiles (.page-glance), and share the range switch,
   class filter chips and search box.
   ===================================================================== */
.page-hero .hero-lead { max-width: 520px; }
.page-hero .hero-lead .text-link { font-size: inherit; }
.page-hero .home-hero-art svg { right: -60px; top: -10px; }
.page-hero-inner { display: flex; justify-content: space-between; align-items: flex-end; flex-wrap: wrap; gap: 18px 28px; padding: 26px 30px; }
.page-hero-inner .home-hero-hello { gap: 18px; }
.page-hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.page-hero-actions .btn-primary { padding: 11px 18px; font-size: 14px; }
.page-hero-actions .btn-action { padding: 10px 14px; font-size: 13.5px; }
.hero-face { width: 64px; height: 64px; border-radius: 20px; box-shadow: 0 0 0 4px var(--surface), 0 12px 30px var(--glow); }
.hero-face svg { width: 28px; height: 28px; }

:is(.page-glance, .focus-glance, .progress-glance) .glance-tile { background: linear-gradient(180deg, var(--surface), var(--surface-2)); }
:is(.page-glance, .focus-glance, .progress-glance) .glance-tile:hover { transform: none; box-shadow: none; border-color: var(--border); }
.glance-label .icon.amber { color: var(--amber); }
.glance-label .icon.green { color: var(--green); }
.glance-label .icon.red { color: var(--danger-text); }
.glance-meter { display: block; height: 6px; border-radius: 999px; background: var(--track); overflow: hidden; margin: 4px 0 2px; }
.glance-meter span { display: block; height: 100%; width: 0; border-radius: inherit; background: linear-gradient(90deg, var(--accent-strong), var(--accent)); transition: width 0.4s ease, background 0.4s ease; }
.glance-meter.green span { background: linear-gradient(90deg, color-mix(in srgb, var(--green) 60%, var(--accent)), var(--green)); }
@media (prefers-reduced-motion: reduce) { .glance-meter span { transition: none; } }

.range-switch { display: inline-flex; gap: 3px; padding: 3px; background: var(--surface-sunken); border: 1px solid var(--border); border-radius: 10px; }
.range-switch button {
  background: transparent; border: 0; border-radius: 7px; padding: 6px 12px; font-size: 12.5px; font-weight: 500; color: var(--text-muted);
  cursor: pointer; white-space: nowrap; transition: background 0.15s ease, color 0.15s ease;
}
.range-switch button:hover { color: var(--text-main); }
.range-switch button[aria-pressed="true"] { background: var(--surface-hover); color: var(--text-main); box-shadow: inset 0 0 0 1px var(--border-strong); }
.page-hero .range-switch { background: var(--surface-glass); border-color: var(--border-strong); backdrop-filter: blur(8px); }
.page-hero .range-switch button { padding: 8px 14px; font-size: 13px; }

.search-field { position: relative; display: flex; align-items: center; }
.search-field .icon { position: absolute; left: 11px; width: 15px; height: 15px; color: var(--text-muted); pointer-events: none; }
.search-field input {
  width: 100%; background: var(--surface-sunken); border: 1px solid var(--border-strong); border-radius: 9px; padding: 9px 12px 9px 34px;
  font-size: 13px; outline: none; transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.search-field input:focus { border-color: color-mix(in srgb, var(--accent) 45%, transparent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 8%, transparent); }

/* Class filter chips (student Class notes, teacher All students) */
.filter-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.filter-chip {
  display: inline-flex; align-items: center; gap: 6px; max-width: 100%; padding: 5px 6px 5px 10px; border-radius: 999px; cursor: pointer;
  font-size: 12.5px; font-weight: 550; color: var(--text-soft); background: var(--surface-sunken); border: 1px solid var(--border);
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}
.filter-chip::before { content: ""; width: 7px; height: 7px; border-radius: 50%; flex: none; background: var(--class-color, var(--text-faint)); }
.filter-chip[data-value="all"]::before { display: none; }
.filter-chip span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.filter-chip small { font-size: 11px; font-weight: 650; color: var(--text-muted); background: var(--surface-hover); border-radius: 999px; padding: 1px 7px; font-variant-numeric: tabular-nums; }
.filter-chip:hover { color: var(--text-main); border-color: var(--border-hover); }
.filter-chip[aria-pressed="true"] { color: var(--text-main); border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); background: color-mix(in srgb, var(--accent) 9%, var(--surface-sunken)); }
.filter-chip[aria-pressed="true"] small { color: var(--accent); background: color-mix(in srgb, var(--accent) 14%, transparent); }

@keyframes list-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@media (max-width: 760px) {
  .page-hero-inner { padding: 22px 18px; }
  .hero-face { width: 52px; height: 52px; border-radius: 16px; }
}
@media (max-width: 520px) {
  .page-hero-actions > * { flex: 1; }
  .range-switch { width: 100%; }
  .range-switch button { flex: 1; }
}

/* =====================================================================
   Class Posts and Assignments (student-classroom.js, teacher-classroom.js) and ⓘ buttons
   ===================================================================== */
.classroom-setup { padding: 12px 14px; border-radius: 12px; font-size: 13px; color: var(--warning-text); background: color-mix(in srgb, var(--amber) 8%, transparent); border: 1px solid color-mix(in srgb, var(--amber) 35%, var(--border)); }
.classroom-form { gap: 8px; }
.field-label { display: block; font-size: 12.5px; font-weight: 600; color: var(--text-soft); margin-top: 6px; }
.field-label .optional { font-weight: 500; color: var(--text-muted); }
.classroom-form textarea, .feedback-input { resize: vertical; min-height: 70px; line-height: 1.5; }
.form-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.form-actions { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 12px; flex-wrap: wrap; }
.form-actions .form-message { flex: 1; min-width: 200px; }
.form-message { font-size: 12.5px; line-height: 1.45; color: var(--text-muted); }
.form-message:empty { display: none; }
.form-message[data-state="error"] { color: var(--danger-text); }
.form-message[data-state="success"] { color: var(--success-text); }
.file-input { padding: 8px; font-size: 13px; }
.file-input::file-selector-button { margin-right: 10px; border: 1px solid var(--border-strong); border-radius: 7px; background: var(--surface-raised); color: var(--text-main); padding: 5px 10px; font: inherit; cursor: pointer; }
.assignment-composer summary { display: flex; align-items: center; gap: 10px; font-size: 15px; font-weight: 650; cursor: pointer; list-style: none; }
.assignment-composer summary::-webkit-details-marker { display: none; }
.assignment-composer summary .chip-icon { width: 30px; height: 30px; }
.assignment-composer[open] summary { margin-bottom: 8px; }

/* Posts */
.post-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.post-item { padding: 14px 16px; border-radius: 14px; background: var(--surface-sunken); border: 1px solid var(--border); border-left: 3px solid color-mix(in srgb, var(--accent) 60%, transparent); }
.post-head { display: flex; align-items: center; gap: 10px; }
.post-title { flex: 1; min-width: 0; font-size: 14px; font-weight: 650; overflow-wrap: anywhere; }
.post-time { font-size: 12px; color: var(--text-muted); white-space: nowrap; }
.post-body { margin-top: 6px; font-size: 13.5px; line-height: 1.55; color: var(--text-soft); white-space: pre-wrap; overflow-wrap: anywhere; }
.post-item .icon-btn {
  width: 30px; height: 30px; display: grid; place-items: center; border-radius: 8px; border: 1px solid var(--border-strong);
  background: var(--surface-raised); color: var(--text-soft); cursor: pointer;
}
.post-item .icon-btn.danger:hover { color: var(--danger-text); border-color: color-mix(in srgb, var(--red) 40%, var(--border)); }
.post-item .icon-btn .icon { width: 15px; height: 15px; }

/* Assignments */
.assignment-list, .assignment-cards { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.assignment-item, .assignment-toggle {
  width: 100%; display: flex; align-items: center; gap: 12px; padding: 12px 14px; border-radius: 12px; text-align: left; cursor: pointer;
  background: var(--surface-sunken); border: 1px solid var(--border); color: inherit; transition: border-color 0.15s ease;
}
.assignment-item:hover, .assignment-toggle:hover { border-color: var(--border-hover); }
.assignment-item[data-state="soon"] { border-left: 3px solid var(--amber); }
.assignment-item[data-state="closed"] { opacity: 0.85; }
.assignment-text { flex: 1; min-width: 0; }
.assignment-text b { display: block; font-size: 14px; font-weight: 650; overflow-wrap: anywhere; }
.assignment-text small { display: block; font-size: 12.5px; color: var(--text-muted); margin-top: 2px; }
.assignment-count { font-size: 12.5px; color: var(--text-soft); white-space: nowrap; }
.assignment-toggle .chevron { width: 16px; height: 16px; color: var(--text-muted); transition: transform 0.2s ease; flex: none; }
.assignment-toggle[aria-expanded="true"] .chevron { transform: rotate(90deg); }
.assignment-card-body { display: flex; flex-direction: column; gap: 12px; padding: 14px 4px 6px; }
.assignment-instructions { font-size: 13.5px; line-height: 1.6; color: var(--text-soft); white-space: pre-wrap; overflow-wrap: anywhere; }
.assignment-body { display: flex; flex-direction: column; gap: 12px; margin-bottom: 14px; }
.back-to-list { margin-bottom: 8px; border: 0; background: none; padding: 0; cursor: pointer; }
.danger-action:hover { color: var(--danger-text); border-color: color-mix(in srgb, var(--red) 40%, var(--border)); }
.status-chip-sm { display: inline-flex; align-items: center; gap: 6px; width: fit-content; font-size: 11.5px; font-weight: 650; padding: 3px 9px; border-radius: 999px; border: 1px solid var(--border); color: var(--text-muted); background: var(--surface-raised); white-space: nowrap; }
.status-chip-sm[data-state="submitted"] { color: var(--info-text); border-color: color-mix(in srgb, var(--info) 35%, var(--border)); }
.status-chip-sm[data-state="marked"] { color: var(--success-text); border-color: color-mix(in srgb, var(--green) 35%, var(--border)); background: color-mix(in srgb, var(--green) 8%, transparent); }
.status-chip-sm[data-state="soon"] { color: var(--warning-text); border-color: color-mix(in srgb, var(--amber) 40%, var(--border)); }
.status-chip-sm[data-state="missing"] { color: var(--danger-text); border-color: color-mix(in srgb, var(--red) 35%, var(--border)); }
.file-chip {
  display: inline-flex; align-items: center; gap: 8px; max-width: 100%; width: fit-content; padding: 7px 11px; border-radius: 10px; cursor: pointer;
  font-size: 13px; color: var(--text-main); background: var(--surface-raised); border: 1px solid var(--border-strong);
}
.file-chip:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); }
.file-chip .icon { width: 15px; height: 15px; color: var(--accent); flex: none; }
.file-chip span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-chip small { color: var(--text-muted); font-size: 11.5px; white-space: nowrap; }
.submission-box { display: flex; flex-direction: column; gap: 8px; padding: 14px; border-radius: 12px; background: var(--surface-2); border: 1px solid var(--border); }
.submission-heading { font-size: 13px; }
.submission-none, .submission-closed { font-size: 13px; color: var(--text-muted); }
.submission-closed { color: var(--warning-text); }
.submission-when, .submission-note { display: block; font-size: 12px; color: var(--text-muted); }
.submission-note { color: var(--warning-text); }
.submission-result { padding: 10px 12px; border-radius: 10px; background: color-mix(in srgb, var(--green) 7%, transparent); border: 1px solid color-mix(in srgb, var(--green) 25%, var(--border)); }
.submission-feedback { margin-top: 4px; font-size: 13px; line-height: 1.5; color: var(--text-soft); white-space: pre-wrap; overflow-wrap: anywhere; }
.upload-form { display: flex; flex-direction: column; gap: 6px; margin-top: 4px; }
.upload-row { display: flex; gap: 8px; flex-wrap: wrap; }
.upload-row .file-input { flex: 1; min-width: 200px; }
.submissions-scroll { max-height: none; }
.submissions-table td { vertical-align: top; }
.submissions-table td:nth-child(2) { display: grid; gap: 6px; justify-items: start; }
.marks-input { width: 80px; padding: 7px 9px; }
.marks-of { margin-left: 6px; font-size: 12px; color: var(--text-muted); }
.feedback-input { min-width: 200px; min-height: 54px; padding: 7px 9px; font-size: 13px; }

/* ⓘ buttons (scripts/shared/info-popover.js) */
.info-wrap { position: relative; display: inline-flex; vertical-align: middle; }
.info-btn {
  width: 20px; height: 20px; border-radius: 50%; display: inline-grid; place-items: center; padding: 0; cursor: pointer;
  font: italic 700 12px/1 Georgia, serif; color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
}
.info-btn:hover, .info-btn[aria-expanded="true"] { background: color-mix(in srgb, var(--accent) 20%, transparent); }
.info-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.info-pop {
  position: absolute; z-index: 30; top: calc(100% + 8px); left: 50%; transform: translateX(-50%); width: max-content; max-width: min(300px, 80vw);
  padding: 10px 12px; border-radius: 10px; font-family: inherit; font-size: 12.5px; font-weight: 500; line-height: 1.5; font-style: normal; text-transform: none; letter-spacing: 0; color: var(--text-main);
  background: var(--surface-raised); border: 1px solid var(--border-strong); box-shadow: 0 12px 30px var(--shadow-color); white-space: normal; text-align: left;
}
@media (max-width: 640px) {
  .form-row { grid-template-columns: 1fr; }
  .info-pop { left: auto; right: -8px; transform: none; }
}
@media (prefers-reduced-motion: reduce) { .assignment-toggle .chevron { transition: none; } }

/* Quizzes (teacher-quizzes.js, student-quizzes.js) */
#quizListCard .panel-head, #studentQuizListCard .panel-head { flex-wrap: wrap; }
.quiz-row { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border-radius: 12px; background: var(--surface-sunken); border: 1px solid var(--border); flex-wrap: wrap; }
.quiz-row-actions { display: inline-flex; gap: 8px; flex-wrap: wrap; }
.quiz-question-list { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.quiz-question { display: flex; flex-direction: column; gap: 8px; padding: 14px; border-radius: 12px; background: var(--surface-sunken); border: 1px solid var(--border); border-left: 3px solid color-mix(in srgb, var(--accent) 60%, transparent); }
.quiz-question-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.quiz-question-head .text-link, .quiz-question > .text-link { border: 0; background: none; padding: 0; cursor: pointer; width: fit-content; }
.quiz-hint { font-size: 12px; color: var(--text-muted); }
.quiz-choice-edit { display: flex; flex-direction: column; gap: 6px; }
.quiz-choice-row { display: flex; align-items: center; gap: 8px; }
.quiz-choice-row input[type="radio"] { width: 18px; height: 18px; accent-color: var(--green); flex: none; cursor: pointer; }
.quiz-choice-row .field-input { flex: 1; min-width: 0; }
.quiz-choice-row .icon-btn { width: 30px; height: 30px; flex: none; border-radius: 8px; border: 1px solid var(--border-strong); background: var(--surface-raised); color: var(--text-soft); cursor: pointer; font-size: 16px; line-height: 1; }
.quiz-choice-row .icon-btn:hover { color: var(--danger-text); }
.quiz-letter { display: inline-grid; place-items: center; width: 26px; height: 26px; flex: none; border-radius: 8px; font-size: 12.5px; font-weight: 750; color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, transparent); border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent); }
.quiz-status { min-height: 1.4em; font-size: 13px; color: var(--text-soft); margin: 2px 0 12px; }
.quiz-lobby { display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 26px 12px; text-align: center; border-radius: 14px; background: var(--surface-sunken); border: 1px dashed var(--border-strong); }
.quiz-lobby-title { font-size: 18px; font-weight: 700; }
.quiz-big { font-size: 40px; font-weight: 800; line-height: 1; color: var(--accent); font-variant-numeric: tabular-nums; }
.quiz-names { list-style: none; display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; max-width: 640px; }
.quiz-names li { padding: 4px 10px; border-radius: 999px; font-size: 12.5px; background: var(--surface-raised); border: 1px solid var(--border); animation: quiz-pop 0.25s ease; }
.quiz-names li.empty-state { border: 0; background: none; }
.quiz-join { min-width: 160px; }
.quiz-waiting { width: 14px; height: 14px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 50%, transparent); animation: quiz-pulse 1.6s ease-out infinite; }
.quiz-question-card { display: flex; flex-direction: column; gap: 14px; }
.quiz-question-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.quiz-progress-label { font-size: 12px; font-weight: 650; letter-spacing: 0.04em; text-transform: uppercase; color: var(--text-muted); }
.quiz-timer { flex: none; white-space: nowrap; min-width: 64px; text-align: center; padding: 4px 10px; border-radius: 999px; font-weight: 750; font-variant-numeric: tabular-nums; color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, transparent); border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent); }
.quiz-timer[data-state="low"] { color: var(--warning-text); background: color-mix(in srgb, var(--amber) 12%, transparent); border-color: color-mix(in srgb, var(--amber) 40%, transparent); }
.quiz-timer[data-state="done"] { color: var(--text-muted); background: var(--surface-raised); border-color: var(--border); }
.quiz-prompt-text { font-size: 18px; font-weight: 650; line-height: 1.45; overflow-wrap: break-word; outline: none; }
.quiz-choices { list-style: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 10px; }
.quiz-choice {
  position: relative; display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; column-gap: 10px; row-gap: 6px; width: 100%; padding: 14px; border-radius: 12px; text-align: left; font: inherit; color: inherit;
  background: var(--surface-sunken); border: 1px solid var(--border-strong); transition: border-color 0.15s ease, transform 0.15s ease, background 0.15s ease;
}
button.quiz-choice { cursor: pointer; }
button.quiz-choice:not(:disabled):hover { border-color: color-mix(in srgb, var(--accent) 50%, var(--border)); transform: translateY(-1px); }
button.quiz-choice:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button.quiz-choice:disabled { cursor: default; }
.quiz-choice-text { grid-column: 2; font-size: 14.5px; overflow-wrap: break-word; }
.quiz-choice[data-mine="true"] { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 9%, var(--surface-sunken)); }
.quiz-choice[data-sending="true"] { opacity: 0.7; }
.quiz-choice[data-correct="true"] { border-color: color-mix(in srgb, var(--green) 60%, var(--border)); background: color-mix(in srgb, var(--green) 9%, var(--surface-sunken)); }
.quiz-choice[data-correct="false"][data-mine="true"] { border-color: color-mix(in srgb, var(--red) 55%, var(--border)); background: color-mix(in srgb, var(--red) 7%, var(--surface-sunken)); }
.quiz-choice[data-correct="false"]:not([data-mine="true"]) { opacity: 0.7; }
.quiz-correct-tag, .quiz-mine-tag { grid-column: 2 / -1; justify-self: start; font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 999px; }
.quiz-correct-tag { color: var(--success-text); background: color-mix(in srgb, var(--green) 14%, transparent); }
.quiz-mine-tag { color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent); }
.quiz-count { position: relative; grid-column: 3; grid-row: 1; width: 64px; padding: 2px 8px; border-radius: 6px; font-size: 12px; font-weight: 700; text-align: right; font-variant-numeric: tabular-nums; overflow: hidden; background: var(--surface-raised); }
.quiz-count::before { content: ""; position: absolute; inset: 0 auto 0 0; width: var(--share, 0%); background: color-mix(in srgb, var(--accent) 22%, transparent); transition: width 0.5s ease; }
.quiz-note { font-size: 13.5px; color: var(--text-soft); }
.quiz-note[data-state="right"] { color: var(--success-text); font-weight: 650; }
.quiz-note[data-state="wrong"] { color: var(--warning-text); }
.quiz-controls { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.class-quiz-score { display: flex; align-items: baseline; gap: 8px; margin-bottom: 14px; }
.class-quiz-score-num { font-size: 44px; font-weight: 800; line-height: 1; color: var(--accent); font-variant-numeric: tabular-nums; }
.class-quiz-score-of { font-size: 14px; color: var(--text-muted); }
.class-quiz-review { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.class-quiz-review-item { display: flex; flex-direction: column; gap: 3px; padding: 10px 12px; border-radius: 10px; background: var(--surface-sunken); border: 1px solid var(--border); border-left: 3px solid var(--green); }
.class-quiz-review-item[data-state="wrong"] { border-left-color: var(--amber); }
.class-quiz-review-item b { font-size: 13.5px; font-weight: 650; overflow-wrap: anywhere; }
.class-quiz-review-item small { font-size: 12.5px; color: var(--text-muted); overflow-wrap: anywhere; }
.quiz-leaderboard { margin-top: 18px; }
.quiz-sub-title { font-size: 14px; font-weight: 700; margin-bottom: 8px; }
.quiz-board { list-style: none; counter-reset: rank; display: flex; flex-direction: column; gap: 6px; }
.quiz-board li { counter-increment: rank; display: flex; align-items: center; gap: 10px; padding: 8px 12px; border-radius: 10px; background: var(--surface-sunken); border: 1px solid var(--border); font-size: 13.5px; }
.quiz-board li::before { content: counter(rank); width: 22px; font-weight: 750; color: var(--text-muted); font-variant-numeric: tabular-nums; }
.quiz-board li span { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.quiz-board li.is-me { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 9%, var(--surface-sunken)); }
@keyframes quiz-pulse { 0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 50%, transparent); } 100% { box-shadow: 0 0 0 14px transparent; } }
@keyframes quiz-pop { from { transform: scale(0.85); opacity: 0; } to { transform: none; opacity: 1; } }
@media (max-width: 640px) { .quiz-prompt-text { font-size: 16px; } .quiz-choices { grid-template-columns: 1fr; } }
@media (max-width: 440px) { .quiz-count { grid-column: 2 / -1; grid-row: auto; justify-self: start; } .quiz-choice { padding: 12px; } }
@media (prefers-reduced-motion: reduce) { .quiz-waiting, .quiz-names li { animation: none; } button.quiz-choice:not(:disabled):hover { transform: none; } }