/* ==========================================================================
   Progression Studio - stylesheet
   Self-hosted. No CDN, no framework, no build step.
   Colour comes from /theme.css, which the control panel generates from the
   SiteSetting table - so a tenant reskins without touching this file.
   ========================================================================== */

/* Fallbacks in case /theme.css has not loaded (it always should). */
:root {
  --bg: #FFFFFF;
  --surface: #FFFFFF;
  --surface-2: #F3F4F6;
  --border: #E4E6EB;
  --text: #14161A;
  --muted: #6B7280;
  --ink: #14161A;
  --ink-contrast: #FFFFFF;
  --accent: #F4511E;
  --accent-2: #D8431A;
  --success: #0F9D58;
  --warning: #B26A00;
  --danger: #DC2626;
  --radius: 14px;
  --font-display: 'Poppins', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;

  --maxw: 1240px;
  --gutter: 24px;
  --shadow: 0 1px 2px rgba(16,24,40,.06), 0 8px 24px rgba(16,24,40,.08);
  --pill: 999px;
}

/* ── Reset ─────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent-2); }
img, svg, video { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }
th, td { text-align: left; }
hr { border: 0; border-top: 1px solid var(--border); margin: 24px 0; }
code, pre, .mono { font-family: ui-monospace, 'SF Mono', Menlo, Consolas, monospace; }

h1, h2, h3, h4, h5 { font-family: var(--font-display); line-height: 1.2; font-weight: 600; }
h1 { font-size: clamp(2rem, 5vw, 3.1rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); letter-spacing: -.015em; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.05rem; }

:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 2px; border-radius: 4px; }

/* ── Layout ────────────────────────────────────────────────────────────── */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }
.wrap-narrow { max-width: 780px; }
.wrap-wide { max-width: 1440px; }
main { flex: 1; }
.section { padding: 56px 0; }
.section-sm { padding: 32px 0; }
.stack > * + * { margin-top: 16px; }
.stack-sm > * + * { margin-top: 8px; }
.stack-lg > * + * { margin-top: 32px; }
.row { display: flex; gap: 16px; align-items: center; }
.row-between { display: flex; gap: 16px; align-items: center; justify-content: space-between; }
.row-top { align-items: flex-start; }
.wrap-row { flex-wrap: wrap; }
.spacer { flex: 1; }
.grid { display: grid; gap: 20px; }
.g2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.g3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.g4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
.g-auto { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.sidebar-layout { display: grid; grid-template-columns: 230px 1fr; gap: 32px; align-items: start; }

/* ── Type helpers ──────────────────────────────────────────────────────── */
.muted { color: var(--muted); }
.small { font-size: .875rem; }
.xs { font-size: .78rem; }
.big { font-size: 1.125rem; }
.bold { font-weight: 600; }
.center { text-align: center; }
.right { text-align: right; }
.upper { text-transform: uppercase; letter-spacing: .08em; }
.eyebrow {
  font-family: var(--font-display); font-size: .75rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: .14em; color: var(--accent-2);
}
.display { font-family: var(--font-display); }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 62ch; }
.pre-wrap { white-space: pre-wrap; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nowrap { white-space: nowrap; }
.prose p + p { margin-top: 1em; }
.prose ul { list-style: disc; padding-left: 1.3em; }
.prose ol { list-style: decimal; padding-left: 1.3em; }
.prose li + li { margin-top: .35em; }
.prose h2, .prose h3 { margin: 1.5em 0 .5em; }
.prose a { color: var(--accent-2); text-decoration: underline; text-underline-offset: 3px; }

/* ── Surfaces ──────────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}
.card-2 { background: var(--surface-2); border-color: transparent; }
.card-hover { transition: border-color .15s, box-shadow .15s, transform .15s; }
.card-hover:hover { border-color: var(--border); box-shadow: var(--shadow); transform: translateY(-2px); }
.card-tight { padding: 14px 16px; }
.panel-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding-bottom: 14px; margin-bottom: 18px;
  border-bottom: 1px solid var(--border);
}
.divider { height: 1px; background: var(--border); margin: 20px 0; }

/* ── Buttons ───────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 20px; border-radius: var(--pill);
  font-family: var(--font-display); font-weight: 600; font-size: .92rem;
  border: 1px solid transparent; cursor: pointer; text-align: center;
  transition: background .15s, border-color .15s, color .15s, opacity .15s;
}
.btn-primary { background: var(--ink); color: var(--ink-contrast); }
.btn-primary:hover { background: color-mix(in srgb, var(--ink) 85%, #fff); color: var(--ink-contrast); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: color-mix(in srgb, var(--accent) 86%, #000); color: #fff; }
.btn-secondary { background: var(--surface-2); border-color: transparent; color: var(--text); }
.btn-secondary:hover { background: color-mix(in srgb, var(--surface-2) 70%, var(--border)); color: var(--text); }
.btn-ghost { border-color: var(--border); color: var(--text); background: transparent; }
.btn-ghost:hover { background: var(--surface-2); color: var(--text); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-sm { padding: 6px 12px; font-size: .82rem; }
.btn-lg { padding: 14px 26px; font-size: 1.02rem; }
.btn-block { width: 100%; }
.btn:disabled, .btn[aria-disabled="true"] { opacity: .45; cursor: not-allowed; filter: none; }
.btn-group { display: flex; flex-wrap: wrap; gap: 10px; }

/* ── Forms ─────────────────────────────────────────────────────────────── */
.field { display: block; margin-bottom: 16px; }
.field > label, .label {
  display: block; font-size: .8rem; font-weight: 600; color: var(--muted);
  text-transform: uppercase; letter-spacing: .06em; margin-bottom: 6px;
}
input[type=text], input[type=email], input[type=password], input[type=url],
input[type=number], input[type=date], input[type=datetime-local], input[type=search],
select, textarea {
  width: 100%; padding: 11px 14px;
  background: var(--surface-2); color: var(--text);
  border: 1px solid transparent; border-radius: var(--radius);
  transition: border-color .15s, background .15s;
}
input::placeholder, textarea::placeholder { color: var(--muted); }
input:focus, select:focus, textarea:focus {
  border-color: var(--ink); background: var(--bg); outline: none; }
textarea { resize: vertical; min-height: 110px; line-height: 1.6; }
input[type=color] { width: 54px; height: 38px; padding: 2px; border-radius: 6px;
  border: 1px solid var(--border); background: var(--bg); }
.check { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 12px; }
.check input { width: 16px; height: 16px; margin-top: 3px; flex-shrink: 0; accent-color: var(--accent); }
.check label { font-size: .92rem; color: var(--text); text-transform: none;
  letter-spacing: 0; font-weight: 400; margin: 0; }
.help { font-size: .8rem; color: var(--muted); margin-top: 5px; }
.field-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px,1fr)); gap: 16px; }
fieldset { border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
legend { padding: 0 8px; font-family: var(--font-display); font-weight: 600; font-size: .9rem; }

/* ── Badges, pills, rank chips ─────────────────────────────────────────── */
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px; border-radius: var(--pill);
  font-size: .74rem; font-weight: 600; letter-spacing: .03em;
  border: 1px solid transparent; background: var(--surface-2); color: var(--muted);
  white-space: nowrap;
}
.pill-accent { border-color: var(--accent); color: var(--accent); }
.pill-success { border-color: var(--success); color: var(--success); }
.pill-warning { border-color: var(--warning); color: var(--warning); }
.pill-danger { border-color: var(--danger); color: var(--danger); }
.rank-chip {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 4px 11px; border-radius: 999px;
  font-family: var(--font-display); font-size: .78rem; font-weight: 600;
  border: 1px solid currentColor; background: color-mix(in srgb, currentColor 12%, transparent);
}
.rank-dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; flex-shrink: 0; }
.badge-tile {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  padding: 14px 10px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--surface-2); text-align: center;
}
.badge-tile.locked { opacity: .38; }
.badge-glyph {
  width: 38px; height: 38px; border-radius: 50%;
  display: grid; place-items: center; font-weight: 700;
  border: 2px solid currentColor;
}

/* ── Progress ──────────────────────────────────────────────────────────── */
.bar { height: 8px; background: var(--surface-2); border-radius: 999px; overflow: hidden; }
.bar > span { display: block; height: 100%; background: var(--accent); border-radius: 999px;
  transition: width .4s ease; }
.bar-thin { height: 5px; }
.bar-success > span { background: var(--success); }

/* ── Ladder ────────────────────────────────────────────────────────────── */
.ladder { display: flex; flex-direction: column; gap: 10px; }
.rung {
  display: grid; grid-template-columns: 48px 1fr auto; gap: 16px; align-items: start;
  padding: 16px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--surface);
}
.rung-num {
  width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center;
  font-family: var(--font-display); font-weight: 700; font-size: 1rem;
  border: 1px solid currentColor; background: color-mix(in srgb, currentColor 14%, transparent);
}
.rung.state-EARNED { border-color: var(--success); }
.rung.state-READY { border-color: var(--accent); }
.rung.state-NEXT { border-color: var(--accent-2); }
.rung.state-LOCKED { opacity: .55; }
.gate-list { margin-top: 10px; display: flex; flex-direction: column; gap: 5px; }
.gate { display: flex; gap: 8px; align-items: flex-start; font-size: .86rem; }
.gate .tick { flex-shrink: 0; width: 16px; font-weight: 700; }
.gate.met { color: var(--success); }
.gate.unmet { color: var(--muted); }

/* ── Nav ───────────────────────────────────────────────────────────────── */
.topbar {
  position: sticky; top: 0; z-index: 60;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.topbar-inner { display: flex; align-items: center; gap: 22px; height: 68px; }
.wordmark { display: inline-flex; align-items: baseline; gap: 2px;
  font-family: var(--font-display); font-weight: 700; font-size: 1.16rem; letter-spacing: -.02em; }
.wordmark .mark-a { color: var(--text); }
.wordmark .mark-b { color: var(--accent); }
.topnav { display: flex; gap: 4px; align-items: center; }
.topnav a {
  padding: 9px 16px; border-radius: var(--pill);
  font-family: var(--font-display); font-size: .9rem; font-weight: 500; color: var(--text);
}
.topnav a:hover { background: var(--surface-2); }
.topnav a.active { background: var(--ink); color: var(--ink-contrast); }
.nav-toggle { display: none; }
.mobile-nav { display: none; border-top: 1px solid var(--border); padding: 10px 0; }
.mobile-nav a { display: block; padding: 10px 4px; color: var(--muted); }

.avatar {
  width: 34px; height: 34px; border-radius: 50%; flex-shrink: 0;
  display: grid; place-items: center; font-weight: 700; font-size: .8rem;
  background: var(--ink); color: var(--ink-contrast); object-fit: cover;
}
.avatar-lg { width: 64px; height: 64px; font-size: 1.4rem; }
.menu { position: relative; }
.menu-panel {
  position: absolute; right: 0; top: calc(100% + 8px); min-width: 230px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; z-index: 70;
}
.menu-panel a, .menu-panel button {
  display: block; width: 100%; text-align: left; padding: 10px 14px;
  font-size: .9rem; color: var(--muted);
}
.menu-panel a:hover, .menu-panel button:hover { background: var(--surface-2); color: var(--text); }
.menu-head { padding: 12px 14px; border-bottom: 1px solid var(--border); background: var(--surface-2); }
[hidden] { display: none !important; }

.side-nav { display: flex; flex-direction: column; gap: 2px; position: sticky; top: 84px; }
.side-nav a { padding: 11px 14px; border-radius: var(--radius); font-size: .93rem;
  font-weight: 500; color: var(--text); }
.side-nav a:hover { background: var(--surface-2); }
.side-nav a.active { background: var(--surface-2); font-weight: 600; }
.side-group { font-size: .7rem; text-transform: uppercase; letter-spacing: .1em;
  color: var(--muted); padding: 14px 12px 6px; }

/* ── Flash messages ────────────────────────────────────────────────────── */
.flashes { position: fixed; top: 78px; right: 20px; z-index: 200;
  display: flex; flex-direction: column; gap: 10px; max-width: 380px; }
.flash {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 12px 14px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border);
  box-shadow: var(--shadow); font-size: .9rem;
  animation: flash-in .2s ease;
}
@keyframes flash-in { from { opacity: 0; transform: translateY(-6px); } }
.flash-success { border-left: 3px solid var(--success); }
.flash-error   { border-left: 3px solid var(--danger); }
.flash-warning { border-left: 3px solid var(--warning); }
.flash-info    { border-left: 3px solid var(--accent-2); }

/* ── Banner ────────────────────────────────────────────────────────────── */
.banner {
  padding: 9px 0; font-size: .82rem; text-align: center;
  background: var(--surface-2); border-bottom: 1px solid var(--border); color: var(--muted);
}
.banner strong { color: var(--text); }
.banner-warn { background: color-mix(in srgb, var(--warning) 14%, var(--bg)); color: var(--text); }

/* ── Hero ──────────────────────────────────────────────────────────────── */
.hero { padding: 84px 0 68px; position: relative; overflow: hidden; }
.hero::before {
  content: ''; position: absolute; inset: -55% 40% auto -14%; height: 620px;
  background: radial-gradient(closest-side,
              color-mix(in srgb, var(--accent) 12%, transparent), transparent);
  pointer-events: none; z-index: 0;
}
.hero::after {
  content: ''; position: absolute; inset: -45% -14% auto 48%; height: 560px;
  background: radial-gradient(closest-side,
              color-mix(in srgb, var(--accent-2) 9%, transparent), transparent);
  pointer-events: none; z-index: 0;
}
.hero > * { position: relative; z-index: 1; }
.hero h1 { margin: 14px 0 18px; white-space: pre-line; }

/* ── Stats ─────────────────────────────────────────────────────────────── */
.stat-band { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px,1fr));
  gap: 1px; background: var(--border); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden; }
.stat { background: var(--surface); padding: 22px 16px; text-align: center; }
.stat-value { font-family: var(--font-display); font-size: 1.9rem; font-weight: 700; line-height: 1; }
.stat-label { font-size: .75rem; color: var(--muted); text-transform: uppercase;
  letter-spacing: .09em; margin-top: 6px; }

/* ── Tables ────────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
table.data { min-width: 620px; font-size: .9rem; }
table.data th {
  background: var(--surface-2); padding: 11px 14px; font-size: .74rem;
  text-transform: uppercase; letter-spacing: .07em; color: var(--muted);
  border-bottom: 1px solid var(--border); font-weight: 600;
}
table.data td { padding: 11px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
table.data tr:last-child td { border-bottom: 0; }
table.data tbody tr:hover { background: var(--surface-2); }

/* ── Tabs / filters ────────────────────────────────────────────────────── */
.tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 26px; }
.tabs a {
  padding: 8px 16px; font-size: .88rem; font-weight: 500; color: var(--text);
  border-radius: var(--pill); background: var(--surface-2);
}
.tabs a:hover { background: color-mix(in srgb, var(--surface-2) 70%, var(--border)); }
.tabs a.active { background: var(--ink); color: var(--ink-contrast); }

/* ── Lesson / course ───────────────────────────────────────────────────── */
.lesson-layout { display: grid; grid-template-columns: 280px 1fr; gap: 32px; align-items: start; }
.lesson-nav { position: sticky; top: 84px; max-height: calc(100vh - 110px); overflow-y: auto; }
.lesson-nav .mod { font-size: .72rem; text-transform: uppercase; letter-spacing: .09em;
  color: var(--muted); padding: 14px 10px 6px; }
.lesson-nav a { display: flex; gap: 9px; align-items: flex-start;
  padding: 7px 10px; border-radius: 7px; font-size: .86rem; color: var(--muted); }
.lesson-nav a:hover { background: var(--surface-2); color: var(--text); }
.lesson-nav a.current { background: var(--surface-2); color: var(--text); font-weight: 500; }
.lesson-nav a.done { color: var(--success); }
.lesson-body { max-width: 74ch; font-size: 1.03rem; }
.lesson-body p + p { margin-top: 1.1em; }
.brief {
  border-left: 3px solid var(--accent); background: var(--surface-2);
  padding: 16px 18px; border-radius: 0 var(--radius) var(--radius) 0;
}

/* ── Quiz ──────────────────────────────────────────────────────────────── */
.quiz-q { border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; background: var(--surface); }
.quiz-q + .quiz-q { margin-top: 14px; }
.choice { display: flex; gap: 10px; align-items: flex-start; padding: 9px 11px;
  border: 1px solid var(--border); border-radius: 8px; cursor: pointer; margin-top: 8px; }
.choice:hover { border-color: var(--accent-2); }
.choice input { margin-top: 3px; accent-color: var(--accent); }
.choice.correct { border-color: var(--success); background: color-mix(in srgb, var(--success) 10%, transparent); }
.choice.wrong { border-color: var(--danger); background: color-mix(in srgb, var(--danger) 10%, transparent); }

/* ── Workbench ─────────────────────────────────────────────────────────── */
.wb-layout { display: grid; grid-template-columns: 1fr 340px; gap: 24px; align-items: start; }
.wb-editor { display: grid; grid-template-columns: 56px 1fr; gap: 0;
  border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
  background: var(--surface); }
.wb-gutter { background: var(--surface-2); border-right: 1px solid var(--border);
  padding: 14px 0; font-size: .74rem; color: var(--muted); text-align: center;
  font-family: ui-monospace, monospace; }
.wb-gutter div { height: 1.75em; line-height: 1.75em; }
.wb-gutter .scheme { color: var(--accent-2); font-weight: 700; }
.wb-text {
  border: 0; border-radius: 0; background: var(--surface); padding: 14px 16px;
  min-height: 460px; line-height: 1.75; font-size: 1rem; resize: vertical;
  font-family: var(--font-body);
}
.wb-text:focus { border: 0; outline: none; }
.wb-panel { position: sticky; top: 84px; max-height: calc(100vh - 110px); overflow-y: auto; }
.word-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.word-chip {
  padding: 4px 9px; border-radius: 6px; font-size: .84rem;
  background: var(--surface-2); border: 1px solid var(--border); cursor: pointer;
}
.word-chip:hover { border-color: var(--accent-2); color: var(--text); }
.word-chip .syl { color: var(--muted); font-size: .7rem; margin-left: 4px; }
.word-chip.picked { border-color: var(--accent); color: var(--accent); }

/* ── Panel (control panel chrome) ──────────────────────────────────────── */
.panel-shell { display: grid; grid-template-columns: 250px 1fr; min-height: 100vh; }
.panel-side {
  background: var(--surface); border-right: 1px solid var(--border);
  padding: 20px 14px; position: sticky; top: 0; height: 100vh; overflow-y: auto;
}
.panel-main { padding: 28px 32px 80px; min-width: 0; }
.panel-brandmark { display: flex; align-items: center; gap: 9px; margin-bottom: 8px;
  font-family: var(--font-display); font-weight: 700; }
.panel-lock { font-size: .68rem; color: var(--success); letter-spacing: .08em;
  text-transform: uppercase; margin-bottom: 18px; }
.kv { display: grid; grid-template-columns: minmax(150px, 34%) 1fr; gap: 8px 18px; font-size: .9rem; }
.kv dt { color: var(--muted); }
.kv dd { word-break: break-word; }
.code-block {
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px 16px; font-size: .82rem; overflow-x: auto; white-space: pre;
  font-family: ui-monospace, monospace; color: var(--muted);
}
.json-edit { font-family: ui-monospace, monospace; font-size: .82rem; min-height: 170px; }

/* ── Misc ──────────────────────────────────────────────────────────────── */
.empty {
  text-align: center; padding: 48px 24px; border: 1px dashed var(--border);
  border-radius: var(--radius); color: var(--muted);
}
.dot-sep::before { content: '·'; margin: 0 7px; color: var(--muted); }
.tag-mock {
  display: inline-flex; align-items: center; gap: 5px; padding: 2px 8px;
  border-radius: 5px; font-size: .68rem; font-weight: 700; letter-spacing: .06em;
  background: color-mix(in srgb, var(--warning) 22%, transparent);
  color: var(--warning); border: 1px solid var(--warning);
}
.footer { border-top: 1px solid var(--border); background: var(--surface-2); margin-top: 72px; }
.footer-inner { padding: 44px 0 28px; }
.footer h5 { font-size: .74rem; text-transform: uppercase; letter-spacing: .1em;
  color: var(--muted); margin-bottom: 12px; }
.footer a { display: block; padding: 4px 0; font-size: .88rem; color: var(--muted); }
.footer a:hover { color: var(--text); }
.footer-bottom { border-top: 1px solid var(--border); padding: 18px 0;
  font-size: .8rem; color: var(--muted); }
.embed-frame { width: 100%; height: 72vh; border: 1px solid var(--border);
  border-radius: var(--radius); background: var(--surface); }

/* ── Responsive ────────────────────────────────────────────────────────── */
@media (max-width: 1000px) {
  .g4 { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .lesson-layout, .wb-layout, .sidebar-layout { grid-template-columns: 1fr; }
  .lesson-nav, .wb-panel, .side-nav { position: static; max-height: none; }
  .panel-shell { grid-template-columns: 1fr; }
  .panel-side { position: static; height: auto; border-right: 0;
    border-bottom: 1px solid var(--border); }
  .panel-main { padding: 22px 18px 60px; }
}
@media (max-width: 760px) {
  :root { --gutter: 16px; }
  .g2, .g3, .g4 { grid-template-columns: 1fr; }
  .topnav { display: none; }
  .nav-toggle { display: inline-flex; }
  .mobile-nav.open { display: block; }
  .hero { padding: 54px 0 44px; }
  .section { padding: 40px 0; }
  .flashes { left: 16px; right: 16px; max-width: none; }
  .rung { grid-template-columns: 40px 1fr; }
  .rung > :last-child { grid-column: 1 / -1; }
  .kv { grid-template-columns: 1fr; gap: 2px 0; }
  .kv dd { margin-bottom: 10px; }
}

@media print {
  .topbar, .footer, .flashes, .btn, .side-nav { display: none !important; }
  body { background: #fff; color: #000; }
}


/* ── App shell: left rail + content + optional help rail ───────────────────
   Mirrors the BandLab for Education layout: navigation on the left, the work
   in the middle, a help column on the right that collapses away on narrow
   screens. */
.app-shell { display: grid; grid-template-columns: 250px minmax(0,1fr) 280px;
  gap: 32px; align-items: start; }
.app-shell.no-rail { grid-template-columns: 250px minmax(0,1fr); }
.help-rail { position: sticky; top: 88px; }
.help-rail h5 { font-family: var(--font-display); font-size: 1rem; font-weight: 600;
  margin-bottom: 12px; color: var(--text); text-transform: none; letter-spacing: 0; }
.help-rail a { display: block; padding: 7px 0; font-size: .88rem; color: var(--text); }
.help-rail a:hover { color: var(--accent-2); }
.rail-foot { margin-top: 20px; font-size: .78rem; color: var(--muted); }

/* Search bar in the BandLab for Education style. */
.search-bar { display: flex; align-items: center; gap: 10px; padding: 4px 6px 4px 16px;
  background: var(--surface-2); border-radius: var(--pill); }
.search-bar input { background: transparent; border: 0; padding: 11px 0; }
.search-bar input:focus { background: transparent; border: 0; }

/* A section header row with the action on the right, as the edu page does. */
.board-head { display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 20px 22px; background: var(--surface-2);
  border-radius: var(--radius); margin-bottom: 18px; }
.board-head h1, .board-head h2 { font-size: 1.5rem; }

@media (max-width: 1180px) {
  .app-shell { grid-template-columns: 230px minmax(0,1fr); }
  .help-rail { display: none; }
}
@media (max-width: 900px) {
  .app-shell, .app-shell.no-rail { grid-template-columns: 1fr; }
}