/* Edit this palette to restyle the site without touching component rules. */
:root {
  color-scheme: light;
  --color-brand-cyan: #20cbd2;
  --color-brand-gold: #ffd21f;
  --color-brand-orange: #f49a22;
  --color-paper: #f7fbfa;
  --color-surface: #ffffff;
  --color-ink: #1d3036;
  --color-muted: #607277;
  --color-line: #cfe7e6;
  --color-accent: #087b84;
  --color-accent-strong: #005e65;
  --color-accent-soft: #daf6f5;
  --color-highlight: var(--color-brand-gold);
  --color-highlight-soft: #fff1c2;
  --color-highlight-ink: #684600;
  --color-danger: #a94438;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "SFMono-Regular", ui-monospace, Consolas, monospace;
  --radius-sm: 0.6rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-pill: 999px;
  --shadow-card: 0 16px 45px rgba(32, 42, 49, 0.07);
  --page-width: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { display: flex; min-height: 100vh; flex-direction: column; margin: 0; background: var(--color-paper); color: var(--color-ink); font-family: var(--font-sans); font-size: 16px; line-height: 1.55; }
button, input, textarea, select { font: inherit; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible { outline: 3px solid var(--color-highlight); outline-offset: 3px; }
.skip-link { position: absolute; z-index: 20; top: 0.5rem; left: 0.5rem; transform: translateY(-160%); padding: 0.7rem 1rem; border-radius: var(--radius-sm); background: var(--color-ink); color: white; }
.skip-link:focus { transform: translateY(0); }
.site-header { width: min(var(--page-width), calc(100% - 3rem)); margin: 0 auto; min-height: 88px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--color-line); }
.brand { display: inline-flex; align-items: center; text-decoration: none; }
.brand-logo { display: block; width: 76px; height: 74px; object-fit: contain; }
.nav-links { display: flex; align-items: center; gap: 2.1rem; }
.nav-links > a { text-decoration: none; font-size: 0.9rem; font-weight: 600; }
.nav-links > a:not(.nav-login) { color: var(--color-muted); }
.nav-links > a:hover { color: var(--color-accent); }
.nav-links .nav-login { padding: 0.68rem 1rem; border: 1px solid var(--color-line); border-radius: var(--radius-pill); background: var(--color-surface); }
.theme-toggle { display: inline-flex; min-height: 42px; align-items: center; justify-content: center; gap: 0.5rem; padding: 0.55rem 0.85rem; border: 1px solid var(--color-line); border-radius: var(--radius-pill); background: var(--color-surface); color: var(--color-ink); cursor: pointer; font-size: 0.82rem; font-weight: 700; white-space: nowrap; transition: border-color 160ms ease, background 160ms ease, color 160ms ease; }
.theme-toggle:hover { border-color: var(--color-accent); background: var(--color-accent-soft); color: var(--color-accent-strong); }
.nav-login span { margin-left: 0.35rem; color: var(--color-accent); }
#nav-account-area { display: inline-flex; align-items: center; }
.account-menu { position: relative; }
.profile-trigger { display: grid; width: 44px; height: 44px; place-items: center; padding: 0; border: 1px solid var(--color-line); border-radius: 50%; background: var(--color-surface); color: var(--color-accent-strong); cursor: pointer; transition: border-color 160ms ease, background 160ms ease; }
.profile-trigger:hover, .profile-trigger[aria-expanded="true"] { border-color: var(--color-accent); background: var(--color-accent-soft); }
.profile-trigger svg { width: 21px; height: 21px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.profile-menu { position: absolute; z-index: 30; top: calc(100% + 0.55rem); right: 0; width: min(270px, calc(100vw - 2rem)); padding: 0.45rem; border: 1px solid var(--color-line); border-radius: var(--radius-md); background: var(--color-surface); box-shadow: var(--shadow-card); }
.profile-menu[hidden] { display: none; }
.profile-email { overflow-wrap: anywhere; margin: 0; padding: 0.6rem 0.65rem 0.7rem; border-bottom: 1px solid var(--color-line); color: var(--color-muted); font-size: 0.76rem; }
.profile-menu > button { width: 100%; margin-top: 0.35rem; padding: 0.65rem; border: 0; border-radius: var(--radius-sm); background: transparent; color: var(--color-ink); cursor: pointer; font-size: 0.84rem; font-weight: 700; text-align: left; }
.profile-menu > button:hover { background: var(--color-accent-soft); color: var(--color-accent-strong); }
.profile-menu > .profile-theme-toggle { display: flex; justify-content: space-between; gap: 0.75rem; }
.profile-theme-toggle strong { color: var(--color-accent-strong); font-size: 0.78rem; }
.profile-menu > a { display: block; margin-top: 0.35rem; padding: 0.65rem; border-radius: var(--radius-sm); color: var(--color-accent-strong); font-size: 0.84rem; font-weight: 700; text-decoration: none; }
.profile-menu > a:hover { background: var(--color-accent-soft); }
.menu-toggle { display: none; border: 0; background: transparent; padding: 0.5rem; }
.menu-toggle span { display: block; width: 22px; height: 2px; background: var(--color-ink); margin: 5px; }
main { flex: 1; min-height: 0; }
.page-wrap { width: min(var(--page-width), calc(100% - 3rem)); margin: 0 auto; }
.hero { display: grid; grid-template-columns: 1.04fr 0.96fr; gap: 3.5rem; align-items: center; padding: 5.2rem 0 5.5rem; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 680px; margin: 1.25rem 0 1.2rem; font-size: clamp(3.2rem, 6.8vw, 5.8rem); line-height: 0.99; font-weight: 600; letter-spacing: -0.065em; }
.hero h1 { margin-top: 0; }
h1 em { color: var(--color-accent); font-style: normal; }
.hero-copy { max-width: 510px; color: var(--color-muted); font-size: 1.12rem; }
.hero-actions { display: flex; gap: 0.8rem; flex-wrap: wrap; margin-top: 2rem; }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; gap: 0.6rem; padding: 0.75rem 1.15rem; border: 1px solid transparent; border-radius: var(--radius-pill); cursor: pointer; text-decoration: none; font-size: 0.9rem; font-weight: 700; transition: transform 160ms ease, background 160ms ease, border-color 160ms ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--color-brand-cyan); color: var(--color-ink); }
.button-primary:hover { background: var(--color-accent-strong); color: #fff; }
.button-secondary { border-color: var(--color-line); background: var(--color-surface); color: var(--color-ink); }
.button-secondary:hover { border-color: var(--color-accent); }
.button-small { min-height: 38px; padding: 0.5rem 0.85rem; font-size: 0.82rem; }
.button[disabled] { opacity: 0.5; cursor: not-allowed; transform: none; }
.hero-note { margin: 1.1rem 0 0; color: var(--color-muted); font-size: 0.78rem; }
.hero-art { position: relative; min-height: 430px; display: grid; place-items: center; }
.orb { position: absolute; border-radius: 50%; }
.orb-one { width: 260px; height: 260px; right: 4%; top: 2%; background: var(--color-highlight-soft); }
.orb-two { width: 185px; height: 185px; left: 1%; bottom: 0; background: var(--color-accent-soft); }
.code-window { position: relative; width: min(100%, 470px); padding: 1.05rem; border: 1px solid rgba(255,255,255,.12); border-radius: 1.3rem; background: #263237; box-shadow: 0 28px 70px rgba(28,44,47,.2); transform: rotate(1.4deg); }
.window-bar { display: flex; align-items: center; gap: 0.38rem; padding: 0 0.1rem 1rem; border-bottom: 1px solid rgba(255,255,255,.12); }
.window-dot { width: 8px; height: 8px; border-radius: 50%; background: #87938e; }
.window-dot:nth-child(1) { background: var(--color-brand-orange); }.window-dot:nth-child(2) { background: var(--color-brand-gold); }.window-dot:nth-child(3) { background: var(--color-brand-cyan); }
.window-title { margin-left: auto; color: #aab6b1; font: 400 0.67rem var(--font-mono); }
.code-lines { padding: 1.35rem 0.55rem 0.45rem; color: #d7e1dd; font: 400 clamp(.68rem, 1.25vw, .82rem)/2 var(--font-mono); white-space: pre; }
.code-lines .line-number { display: inline-block; width: 2rem; color: #72847d; user-select: none; }
.code-lines .kw { color: #f4c85d; }.code-lines .str { color: #a9d8a0; }.code-lines .fn { color: #65d4d7; }.code-lines .comment { color: #88978f; }
.float-tag { position: absolute; z-index: 2; padding: 0.7rem 0.95rem; border: 1px solid var(--color-line); border-radius: var(--radius-pill); background: var(--color-surface); box-shadow: var(--shadow-card); font-size: 0.76rem; font-weight: 700; }
.float-tag span { margin-right: 0.35rem; color: var(--color-accent); font-family: var(--font-mono); }
.tag-python { top: 14%; left: 0; transform: rotate(-5deg); }.tag-r { right: 1%; bottom: 13%; transform: rotate(4deg); }
.section { padding: 5.3rem 0; }
.section-tint { background: var(--color-accent-soft); }
.section-heading { max-width: 650px; margin: 0 auto 2.7rem; text-align: center; }
.section-heading h2 { margin: 0 0 0.6rem; font-size: clamp(2.1rem, 4vw, 3.2rem); line-height: 1.08; letter-spacing: -0.045em; font-weight: 600; }
.section-heading p { margin: 0; color: var(--color-muted); }
.course-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.2rem; }
.course-card { position: relative; display: flex; min-height: 280px; flex-direction: column; overflow: hidden; padding: 1.65rem; border: 1px solid var(--color-line); border-radius: var(--radius-lg); background: var(--color-surface); text-decoration: none; transition: transform 180ms ease, box-shadow 180ms ease; }
.course-card:first-child { border-top: 3px solid var(--color-brand-cyan); }.course-card:nth-child(2) { border-top: 3px solid var(--color-brand-orange); }
.course-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card); }
.course-card-top { display: flex; justify-content: space-between; align-items: center; }
.course-symbol { width: 50px; height: 50px; display: grid; place-items: center; border-radius: 15px; background: var(--color-accent-soft); color: var(--color-accent-strong); font: 500 1rem var(--font-mono); }
.course-card:nth-child(2) .course-symbol { background: var(--color-highlight-soft); color: var(--color-highlight-ink); }
.course-arrow { font-size: 1.1rem; color: var(--color-accent); }
.course-card h3 { margin: 1.6rem 0 0.4rem; font-size: 1.55rem; letter-spacing: -0.03em; }
.course-card p { max-width: 440px; margin: 0; color: var(--color-muted); }
.course-card-meta { display: flex; gap: 0.55rem; margin-top: auto; padding-top: 1.2rem; }
.pill { display: inline-flex; align-items: center; padding: 0.28rem 0.62rem; border-radius: var(--radius-pill); background: var(--color-accent-soft); color: var(--color-accent-strong); font-size: 0.7rem; font-weight: 700; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; text-align: left; }
.feature-card { padding: 1.4rem; border-top: 1px solid var(--color-line); }
.feature-index { color: var(--color-accent); font: 500 0.76rem var(--font-mono); }
.feature-card h3 { margin: 1.2rem 0 0.45rem; font-size: 1.05rem; }
.feature-card p { margin: 0; color: var(--color-muted); font-size: 0.9rem; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; counter-reset: steps; }
.step { padding: 1.3rem 1.2rem; border: 1px solid var(--color-line); border-radius: var(--radius-md); background: rgba(255,255,255,.65); }
.step-number { width: 32px; height: 32px; display: grid; place-items: center; border-radius: 50%; background: var(--color-brand-gold); color: var(--color-highlight-ink); font: 500 0.75rem var(--font-mono); }
.step h3 { margin: 1rem 0 0.35rem; font-size: 1rem; }.step p { margin: 0; color: var(--color-muted); font-size: 0.88rem; }
.callout { display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding: 2.4rem; border-radius: var(--radius-lg); background: var(--color-ink); color: white; }
.callout h2 { margin: 0 0 0.35rem; font-size: clamp(1.5rem, 3vw, 2.2rem); letter-spacing: -0.04em; }
.callout p { margin: 0; color: #c4cfcb; }
.callout .button { flex: 0 0 auto; background: var(--color-highlight); color: var(--color-ink); }
.site-footer { width: min(var(--page-width), calc(100% - 3rem)); margin: 0 auto; display: flex; align-items: center; gap: 1.5rem; padding: 2rem 0; border-top: 1px solid var(--color-line); }
.site-footer p { margin: 0; color: var(--color-muted); font-size: 0.78rem; }.footer-note { display: grid; gap: 0.3rem; margin-left: auto; color: var(--color-muted); font-size: 0.72rem; text-align: right; }.footer-data-note { display: block; max-width: 390px; color: var(--color-muted); font-size: 0.66rem; font-weight: 400; line-height: 1.45; }.footer-data-note a { color: var(--color-accent-strong); font-weight: 700; text-decoration: none; }.footer-data-note a:hover { text-decoration: underline; text-underline-offset: 2px; }
.footer-links { display: flex; align-items: center; flex-wrap: wrap; gap: 0.35rem 1rem; }
.footer-links a { color: var(--color-accent-strong); font-size: 0.76rem; font-weight: 700; text-decoration: none; }
.footer-links a:hover, .membership-link:hover { text-decoration: underline; text-underline-offset: 3px; }
.footer-links a span { color: var(--color-accent); }
.brand-footer .brand-logo { width: 58px; height: 57px; }

/* Portal, course and admin views */
.subpage { padding: 3.4rem 0 5rem; }
.back-link { display: inline-flex; align-items: center; gap: 0.45rem; margin-bottom: 1.8rem; color: var(--color-muted); font-size: 0.82rem; font-weight: 600; text-decoration: none; }
.back-link:hover { color: var(--color-accent); }
.page-title { max-width: 760px; margin: 0 0 0.8rem; font-size: clamp(2.5rem, 5vw, 4rem); line-height: 1.03; letter-spacing: -0.06em; font-weight: 600; }
.page-intro { max-width: 670px; margin-bottom: 2.2rem; color: var(--color-muted); font-size: 1.02rem; }
.portal-layout { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 2rem; align-items: start; }
.panel { padding: 1.4rem; border: 1px solid var(--color-line); border-radius: var(--radius-md); background: var(--color-surface); }
.panel + .panel { margin-top: 1rem; }
.panel h2, .panel h3 { margin: 0 0 0.65rem; }.panel p:last-child { margin-bottom: 0; }
.panel-muted { color: var(--color-muted); font-size: 0.86rem; }
.course-list { display: grid; gap: 0.8rem; }
.portal-course { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem; border: 1px solid var(--color-line); border-radius: var(--radius-md); background: var(--color-surface); text-decoration: none; }
.portal-course:hover { border-color: var(--color-accent); }.portal-course h3 { margin: 0 0 0.25rem; font-size: 1.05rem; }.portal-course p { margin: 0; color: var(--color-muted); font-size: 0.83rem; }
.auth-card { max-width: 500px; margin: 2.5rem auto 5rem; padding: 2rem; border: 1px solid var(--color-line); border-radius: var(--radius-lg); background: var(--color-surface); box-shadow: var(--shadow-card); }
.auth-card h1 { margin: 0 0 0.65rem; font-size: 2.35rem; }.auth-card > p { color: var(--color-muted); }
.fresh-link-form { margin: 1.6rem 0 1.2rem; padding-top: 1.4rem; border-top: 1px solid var(--color-line); }
.fresh-link-form > p { margin: 0 0 1rem; color: var(--color-muted); line-height: 1.5; }
.fresh-link-form strong { color: var(--color-ink); }
.field { display: grid; gap: 0.35rem; margin: 1rem 0; }.field label { font-size: 0.81rem; font-weight: 700; }.field input, .field textarea, .field select { width: 100%; padding: 0.72rem 0.8rem; border: 1px solid #cdd5d1; border-radius: var(--radius-sm); background: #fff; color: var(--color-ink); }.field textarea { min-height: 120px; resize: vertical; }.field small { color: var(--color-muted); font-size: 0.75rem; }
.field .email-domain-hint { color: var(--color-danger); line-height: 1.45; }
.email-domain-hint[hidden] { display: none; }
.field-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.8rem; }
.form-message { min-height: 1.4rem; margin: 0.7rem 0 0; color: var(--color-muted); font-size: 0.82rem; }.form-message.error { color: var(--color-danger); }.form-message.success { color: var(--color-accent-strong); }
.text-button { display: inline; padding: 0; border: 0; background: none; color: var(--color-accent); cursor: pointer; font-size: inherit; font-weight: 700; text-decoration: underline; text-underline-offset: 3px; }
.notice { display: flex; gap: 0.7rem; margin: 1rem 0; padding: 0.8rem 0.9rem; border: 1px solid #f1d98b; border-radius: var(--radius-sm); background: var(--color-highlight-soft); color: var(--color-highlight-ink); font-size: 0.8rem; }
.notice-info { border-color: #b5e7e7; background: var(--color-accent-soft); color: var(--color-accent-strong); }
.demo-label { display: inline-flex; margin-bottom: 1rem; padding: 0.27rem 0.55rem; border-radius: var(--radius-pill); background: var(--color-highlight-soft); color: var(--color-highlight-ink); font: 500 0.68rem var(--font-mono); letter-spacing: 0.04em; text-transform: uppercase; }
.weeks-title { margin: 2rem 0 0.8rem; font-size: 1.2rem; letter-spacing: -0.02em; }
.week-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.week-card { display: flex; min-height: 175px; flex-direction: column; padding: 1.1rem; border: 1px solid var(--color-line); border-top: 3px solid var(--color-brand-cyan); border-radius: var(--radius-md); background: var(--color-surface); text-decoration: none; transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease; }
.week-card:nth-child(3n + 2) { border-top-color: var(--color-brand-gold); }.week-card:nth-child(3n) { border-top-color: var(--color-brand-orange); }
.week-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-card); }
.week-card-position { color: var(--color-accent-strong); font: 500 0.69rem var(--font-mono); letter-spacing: 0.04em; text-transform: uppercase; }
.week-card h3 { margin: 0.55rem 0 0.35rem; font-size: 1.08rem; letter-spacing: -0.025em; }
.week-card p { margin: 0; color: var(--color-muted); font-size: 0.82rem; }
.week-card-arrow { margin-top: auto; padding-top: 0.9rem; color: var(--color-accent-strong); font-size: 0.8rem; font-weight: 700; }
.week-list { display: grid; max-width: 960px; border-top: 1px solid var(--color-line); }
.week-list-item { display: grid; grid-template-columns: 2.75rem minmax(0, 1fr) auto 1rem; align-items: center; gap: 0.9rem; padding: 0.95rem 0.55rem; border-bottom: 1px solid var(--color-line); color: inherit; text-decoration: none; transition: background 150ms ease, padding 150ms ease; }
.week-list-item::after { content: "↗"; color: var(--color-accent-strong); font-size: 0.8rem; font-weight: 700; }
.week-list-item:hover, .week-list-item:focus-visible { padding-right: 0.8rem; padding-left: 0.8rem; background: #f2f8f5; outline-color: var(--color-accent); }
.week-list-number { display: grid; width: 2.55rem; height: 2.55rem; place-items: center; border: 1px solid #d7e6df; border-radius: 50%; background: #f2f8f5; color: var(--color-accent-strong); font: 500 0.78rem var(--font-mono); }
.week-list-copy { display: grid; gap: 0.12rem; min-width: 0; }
.week-list-label { color: var(--color-muted); font: 500 0.65rem var(--font-mono); letter-spacing: 0.05em; text-transform: uppercase; }
.week-list-copy strong { overflow-wrap: anywhere; font-size: 0.98rem; letter-spacing: -0.015em; }
.week-list-copy small { color: var(--color-muted); font-size: 0.73rem; }
.week-list-item .progress-status { margin: 0; white-space: nowrap; }
.weeks-heading-row { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; }
.weeks-title { margin: 2rem 0 0.8rem; font-size: 1.2rem; letter-spacing: -0.02em; }
.course-progress-summary { margin: 2rem 0 0.8rem; color: var(--color-muted); font-size: 0.78rem; }
.progress-status { display: inline-flex; align-items: center; width: fit-content; margin-top: 0.65rem; padding: 0.22rem 0.55rem; border-radius: var(--radius-pill); background: #f0f3f1; color: var(--color-muted); font-size: 0.68rem; font-weight: 700; }
.progress-status.is-complete { background: #e8f5ec; color: #17633b; }
.progress-toggle { display: inline-flex; flex: 0 0 auto; align-items: center; justify-content: center; min-height: 36px; padding: 0.45rem 0.75rem; border: 1px solid var(--color-line); border-radius: var(--radius-pill); background: var(--color-surface); color: var(--color-accent-strong); cursor: pointer; font-size: 0.74rem; font-weight: 700; }
.progress-toggle:hover { border-color: var(--color-accent); background: var(--color-accent-soft); }
.progress-toggle.is-complete { border-color: #b6ddc3; background: #e8f5ec; color: #17633b; }
.progress-toggle.is-complete:hover { border-color: #77b88c; background: #ddf0e3; }
.progress-toggle:disabled { opacity: 0.6; cursor: wait; }
.progress-hint { color: var(--color-muted); font-size: 0.75rem; }
.week-sidebar-status { display: inline-grid; width: 1.25rem; height: 1.25rem; flex: 0 0 1.25rem; place-items: center; margin-left: auto; border: 1px solid #c9d8d2; border-radius: 50%; color: #87958f; font-size: 0.78rem; font-weight: 700; line-height: 1; }
.week-sidebar-status.is-complete { border-color: #a8d3b6; background: #e8f5ec; color: #17633b; }
.course-sidebar nav a { display: flex; align-items: center; gap: 0.3rem; }
.week-heading { align-items: center; justify-content: space-between; }
.week-heading-title { display: flex; align-items: baseline; gap: 0.65rem; min-width: 0; }
.quiz-header { display: flex; align-items: center; justify-content: space-between; gap: 0.8rem; }
.quiz-header h3 { margin: 0; }
.lesson-view > .progress-toggle { margin-top: 0.8rem; }
.course-shell { display: grid; grid-template-columns: 260px minmax(0,1fr); gap: 2.3rem; align-items: start; }
.course-sidebar { position: sticky; top: 1.25rem; max-height: calc(100vh - 2.5rem); overflow: auto; padding: 1rem; border: 1px solid var(--color-line); border-radius: var(--radius-md); background: var(--color-surface); }
.course-sidebar > .back-link { display: inline-flex; margin: 0 0 1rem; padding: 0; border: 0; background: transparent; }
.course-sidebar h2 { margin: 0 0 0.7rem; font-size: 0.9rem; }.course-sidebar nav { display: grid; gap: 0.2rem; }.course-sidebar nav a { display: flex; align-items: center; justify-content: space-between; gap: 0.45rem; padding: 0.5rem 0.55rem; border-radius: 0.45rem; color: var(--color-muted); font-size: 0.8rem; text-decoration: none; }.course-sidebar nav a:hover, .course-sidebar nav a[aria-current="page"] { background: var(--color-accent-soft); color: var(--color-accent-strong); }.course-sidebar nav a[aria-current="page"] { font-weight: 700; }
.week-pagination { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--color-line); }.week-pagination .is-loading { pointer-events: none; opacity: 0.65; }
.week-block { margin: 0 0 1rem; padding: 1.2rem; border: 1px solid var(--color-line); border-radius: var(--radius-md); background: var(--color-surface); }.week-heading { display: flex; align-items: baseline; gap: 0.7rem; margin-bottom: 0.65rem; }.week-number { color: var(--color-accent); font: 500 0.73rem var(--font-mono); text-transform: uppercase; }.week-heading h2 { margin: 0; font-size: 1.1rem; }.lesson-row { display: flex; justify-content: space-between; gap: 0.8rem; padding: 0.7rem 0; border-top: 1px solid #edf0ed; }.lesson-row button { border: 0; background: transparent; color: var(--color-ink); cursor: pointer; text-align: left; font-weight: 600; }.lesson-type { color: var(--color-muted); font-size: 0.74rem; white-space: nowrap; }
.lesson-view { margin: 0.7rem 0 0.2rem; padding: 1rem; border-radius: var(--radius-sm); background: #f5f7f4; }.lesson-copy { white-space: pre-wrap; color: #46545a; }.video-frame { width: 100%; aspect-ratio: 16/9; border: 0; border-radius: var(--radius-sm); background: #202a31; }.lesson-complete { display: inline-flex; align-items: center; gap: 0.45rem; margin-top: 0.8rem; color: var(--color-accent); font-size: 0.78rem; font-weight: 700; }
.quiz-box { margin-top: 1rem; padding: clamp(1rem, 2.5vw, 1.4rem); border: 1px solid #dce8e3; border-radius: 1rem; background: #fff; box-shadow: 0 8px 24px rgba(24, 53, 46, 0.055); }
.quiz-header { margin-bottom: 1rem; }
.quiz-box h3 { margin: 0; font-size: 1.02rem; }
.quiz-question { min-width: 0; margin: 0 0 0.85rem; padding: 0.85rem; border: 1px solid #e3ebe7; border-radius: 0.75rem; background: #f9fbfa; }
.quiz-question legend { max-width: 100%; padding: 0 0.2rem; }
.quiz-question p { margin: 0; font-weight: 700; line-height: 1.5; }
.quiz-option { display: flex; align-items: flex-start; gap: 0.6rem; margin-top: 0.35rem; padding: 0.6rem 0.7rem; border: 1px solid transparent; border-radius: 0.55rem; background: #fff; color: var(--color-muted); cursor: pointer; font-size: 0.85rem; line-height: 1.45; transition: background 150ms ease, border-color 150ms ease; }
.quiz-option:hover { border-color: #cadfd5; background: #f2f8f5; }
.quiz-option input { flex: 0 0 auto; margin-top: 0.18rem; accent-color: var(--color-accent-strong); }
.quiz-box > .button { min-height: 42px; margin-top: 0.35rem; padding: 0.65rem 1rem; }
.quiz-box > .form-message { margin-top: 0.65rem; }
.quiz-box > .form-message:empty { display: none; }
.quiz-placeholder-note { margin: -0.2rem 0 0.8rem; color: var(--color-muted); font-size: 0.76rem; }
.quiz-attempt-history { margin-top: 0.8rem; border-top: 1px solid #edf0ed; padding-top: 0.7rem; color: var(--color-muted); font-size: 0.78rem; }
.quiz-attempt-history summary { width: fit-content; color: var(--color-accent-strong); cursor: pointer; font-weight: 700; }
.quiz-attempt-history ol { display: grid; gap: 0.4rem; margin: 0.7rem 0 0; padding: 0; list-style: none; }
.quiz-attempt-history li { display: grid; grid-template-columns: 1fr auto; gap: 0.1rem 0.7rem; padding: 0.55rem 0.65rem; border-radius: var(--radius-sm); background: #f5f7f4; }
.quiz-attempt-history li strong { color: #17633b; }
.quiz-attempt-history li small { grid-column: 1 / -1; color: var(--color-muted); }
.admin-tabs { display: flex; gap: 0.45rem; margin: 1.5rem 0; border-bottom: 1px solid var(--color-line); }.admin-tab { padding: 0.65rem 0.9rem; border: 0; border-bottom: 2px solid transparent; background: transparent; color: var(--color-muted); cursor: pointer; font-weight: 700; }.admin-tab[aria-selected="true"] { border-color: var(--color-accent); color: var(--color-accent-strong); }
.admin-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, .9fr); gap: 1rem; align-items: start; }.admin-list { display: grid; gap: 0.5rem; }.admin-list-item { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.75rem; border: 1px solid var(--color-line); border-radius: var(--radius-sm); background: white; }.admin-list-item strong { font-size: 0.82rem; }.admin-list-item small { display: block; color: var(--color-muted); font-size: 0.74rem; }.admin-list-item button { border: 0; background: transparent; color: var(--color-accent); cursor: pointer; font-size: 0.78rem; font-weight: 700; }
.admin-access-list { max-height: 460px; overflow: auto; align-content: start; }.admin-access-list .admin-list-item { align-items: flex-start; }
.admin-member-item { min-width: 0; }
.admin-member-info { min-width: 0; flex: 1 1 auto; }
.admin-member-info > strong { display: block; overflow-wrap: anywhere; }
.admin-member-courses { display: grid; gap: 0.2rem; margin-top: 0.4rem; }
.admin-member-course { display: flex; align-items: center; justify-content: space-between; gap: 0.6rem; padding-top: 0.3rem; border-top: 1px solid #edf1ee; }
.admin-member-course > span { min-width: 0; color: var(--color-muted); font-size: 0.7rem; }
.admin-list-item .admin-access-action { flex: 0 0 auto; padding: 0; white-space: nowrap; font-size: 0.68rem; }
.admin-list-item .admin-delete-account { flex: 0 0 auto; align-self: center; padding: 0.35rem 0 0.35rem 0.35rem; color: var(--color-danger); font-size: 0.72rem; white-space: nowrap; }
.admin-list-item .admin-delete-account:hover { text-decoration: underline; text-underline-offset: 3px; }
.panel-heading { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }.panel-heading h2 { margin-top: 0; }.status-pill { display: inline-flex; align-items: center; padding: 0.25rem 0.55rem; border-radius: var(--radius-pill); background: var(--color-accent-soft); color: var(--color-accent-strong); font-size: 0.68rem; font-weight: 700; white-space: nowrap; }.status-pending { background: var(--color-highlight-soft); color: var(--color-highlight-ink); }.status-draft { background: #f0f2ef; color: var(--color-muted); }.preview-footnote { margin: 1rem 0 0; color: var(--color-muted); font-size: 0.72rem; }
.check-row { display: flex; flex-wrap: wrap; gap: 0.8rem; }.check-row label { display: flex; gap: 0.4rem; align-items: center; font-size: 0.84rem; }
.empty-state { padding: 1.5rem; border: 1px dashed #bbc7c1; border-radius: var(--radius-md); color: var(--color-muted); text-align: center; }
.toast-region { position: fixed; z-index: 50; right: 1.2rem; bottom: 1.2rem; width: min(370px, calc(100% - 2.4rem)); }.toast { margin-top: 0.5rem; padding: 0.9rem 1rem; border-radius: var(--radius-sm); background: var(--color-ink); color: white; box-shadow: var(--shadow-card); font-size: 0.84rem; }
.site-footer { margin-top: auto; }

/* Compact society-first home page. Adjust the shared tokens above to restyle it. */
.home-wrap { padding-bottom: 1.5rem; }
.society-hero { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(350px, 0.9fr); gap: clamp(2rem, 5vw, 5rem); align-items: center; min-height: 480px; padding: 3rem 0 2.4rem; }
.society-kicker { margin: 0 0 0.7rem; color: var(--color-accent-strong); font: 500 0.75rem var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; }
.society-intro h1 { max-width: 680px; margin: 0 0 1rem; font-size: clamp(2.9rem, 5.3vw, 4.7rem); line-height: 1.08; }
.society-intro .hero-copy { max-width: 560px; margin-bottom: 0; }
.society-intro .hero-actions { align-items: center; gap: 1.1rem; margin-top: 1.6rem; }
.membership-callout { flex: 1 1 270px; max-width: 410px; padding: 0.15rem 0 0.15rem 1rem; border-left: 2px solid var(--color-brand-gold); }
.membership-callout > strong { display: block; margin-bottom: 0.12rem; font-size: 0.84rem; line-height: 1.35; }
.membership-callout p { margin: 0; color: var(--color-muted); font-size: 0.72rem; line-height: 1.45; }
.membership-link { display: inline-flex; align-items: center; gap: 0.3rem; margin-top: 0.28rem; color: var(--color-ink); font-size: 0.72rem; font-weight: 700; text-decoration: none; }
.membership-link span { color: var(--color-accent-strong); }
.membership-link:hover { text-decoration: underline; text-underline-offset: 3px; }
.home-course-panel { padding: 1.35rem; border: 1px solid var(--color-line); border-top: 4px solid var(--color-brand-gold); border-radius: var(--radius-lg); background: var(--color-surface); box-shadow: var(--shadow-card); }
.home-course-panel-heading { display: flex; align-items: center; gap: 0.9rem; margin-bottom: 1rem; }
.home-course-mark { width: 48px; height: 48px; display: grid; flex: 0 0 auto; place-items: center; border-radius: 14px; background: var(--color-accent-soft); color: var(--color-accent-strong); font: 500 1rem var(--font-mono); }
.home-course-kicker { margin: 0 0 0.15rem; color: var(--color-accent-strong); font: 500 0.65rem var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; }
.home-course-panel h2 { margin: 0; font-size: 1.35rem; letter-spacing: -0.035em; }
.home-course-link { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.8rem 0.9rem; border: 1px solid var(--color-line); border-radius: var(--radius-sm); text-decoration: none; transition: border-color 160ms ease, background 160ms ease; }
.home-course-link + .home-course-link { margin-top: 0.5rem; }
.home-course-link:hover { border-color: var(--color-accent); background: var(--color-paper); }
.home-course-link > span:last-child { color: var(--color-accent-strong); font-size: 1.1rem; }
.home-course-link strong, .home-course-link small { display: block; }
.home-course-link strong { font-size: 0.95rem; }.home-course-link small { margin-top: 0.12rem; color: var(--color-muted); font-size: 0.75rem; }
.home-course-link-r { border-left: 3px solid var(--color-brand-orange); }
.home-ide { min-width: 0; }
.home-ide .hero-art { min-height: 370px; }
.home-ide .code-window { width: min(100%, 500px); transform: none; }
.home-ide-caption { display: flex; align-items: center; gap: 0.5rem; max-width: 500px; margin: -0.25rem auto 0; color: var(--color-muted); font-size: 0.7rem; }
.ide-status-dot { width: 0.45rem; height: 0.45rem; flex: 0 0 auto; border-radius: 50%; background: #47ae77; }

@media (max-width: 850px) {
  .hero { gap: 1rem; grid-template-columns: 1fr 0.9fr; padding: 4rem 0; }
  .society-hero { grid-template-columns: minmax(0, 1fr) minmax(300px, 0.9fr); gap: 1.5rem; min-height: 420px; }
  .society-intro h1 { font-size: clamp(2.75rem, 6.4vw, 3.8rem); }
  .hero-art { min-height: 350px; }.code-window { transform: none; }.portal-layout { grid-template-columns: 1fr; }.course-shell { grid-template-columns: 180px minmax(0, 1fr); gap: 1.25rem; }.week-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 650px) {
  .site-header { width: calc(100% - 2rem); min-height: 72px; }.brand-logo { width: 66px; height: 64px; }.nav-links { display: none; position: absolute; z-index: 10; top: 72px; left: 0; right: 0; padding: 1rem; border-bottom: 1px solid var(--color-line); background: var(--color-paper); }.nav-links.is-open { display: grid; gap: 0.85rem; }.nav-links .nav-login { width: fit-content; }.menu-toggle { display: block; }
  .page-wrap { width: calc(100% - 2rem); }.hero { display: block; padding: 3rem 0 3.3rem; }.hero-art { min-height: 310px; margin-top: 2.3rem; }.orb-one { width: 205px; height: 205px; }.orb-two { width: 130px; height: 130px; }.code-window { width: 95%; padding: 0.8rem; }.code-lines { font-size: 0.62rem; }.float-tag { font-size: 0.68rem; }.tag-python { top: 7%; left: 1%; }.tag-r { right: -1%; bottom: 4%; }
  .society-hero { display: flex; flex-direction: column; align-items: stretch; gap: 1.35rem; min-height: 0; padding: 2.4rem 0 1.5rem; }
  .society-intro h1 { max-width: 520px; font-size: clamp(2.7rem, 11vw, 3.75rem); line-height: 1.06; }
  .society-intro .hero-actions { align-items: stretch; flex-direction: column; gap: 0.85rem; }
  .society-intro .hero-actions .button { align-self: flex-start; }
  .membership-callout { flex-basis: auto; max-width: 440px; }
  .home-ide .hero-art { min-height: 280px; margin-top: 0; }
  .home-ide .code-window { width: 100%; padding: 0.8rem; }
  .home-ide .code-lines { font-size: 0.62rem; }
  .home-course-panel { padding: 1.05rem; }
  .section { padding: 3.6rem 0; }.course-grid, .feature-grid, .steps { grid-template-columns: 1fr; }.course-card { min-height: 245px; }.section-heading { margin-bottom: 1.8rem; }.callout { display: block; padding: 1.6rem; }.callout .button { margin-top: 1.1rem; }.site-footer { width: calc(100% - 2rem); flex-wrap: wrap; gap: 0.8rem 1rem; }.site-footer p { flex-basis: 100%; order: 2; }.footer-links { flex-basis: 100%; order: 3; gap: 0.4rem 1rem; }.footer-note { margin-left: 0; flex-basis: 100%; order: 4; }
  .subpage { padding: 2.5rem 0 3.5rem; }.auth-card { margin: 1rem auto 3.5rem; padding: 1.4rem; }.field-row, .admin-grid, .week-grid { grid-template-columns: 1fr; }.week-list-item { grid-template-columns: 2.15rem minmax(0, 1fr) auto 0.7rem; gap: 0.55rem; padding: 0.85rem 0.25rem; }.week-list-item:hover, .week-list-item:focus-visible { padding-right: 0.45rem; padding-left: 0.45rem; }.week-list-number { width: 2.05rem; height: 2.05rem; font-size: 0.68rem; }.week-list-copy strong { font-size: 0.88rem; }.week-list-copy small { font-size: 0.66rem; }.week-list-item .progress-status { padding: 0.18rem 0.4rem; font-size: 0.6rem; }.course-shell { grid-template-columns: minmax(100px, 0.32fr) minmax(0, 1fr); gap: 0.65rem; }.course-sidebar { top: 0.5rem; max-height: calc(100vh - 1rem); padding: 0.65rem; }.course-sidebar > .back-link { font-size: 0.66rem; }.course-sidebar h2 { font-size: 0.8rem; }.course-sidebar nav a { padding: 0.4rem 0.3rem; font-size: 0.68rem; }.week-card { min-height: 150px; }.week-block { padding: 0.9rem; }.week-pagination { flex-wrap: wrap; justify-content: center; }.week-pagination > * { flex: 1 1 auto; }.week-pagination .button { min-width: 130px; }.admin-tabs { overflow-x: auto; }.admin-tab { white-space: nowrap; }.admin-access-list .admin-member-item { flex-direction: column; }.admin-list-item .admin-delete-account { align-self: flex-end; }
  .weeks-heading-row { align-items: flex-start; flex-direction: column; gap: 0; }.weeks-title { margin-bottom: 0.2rem; }.course-progress-summary { margin: 0 0 0.8rem; }.week-heading-title { flex-wrap: wrap; }.week-heading { align-items: flex-start; }.quiz-header { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 650px) {
  .footer-note { text-align: left; }
  .footer-data-note { max-width: none; }
}

/* Keep the established card layout on the course chooser. */
.week-list { max-width: 100%; border-top: 1px solid var(--color-line); }
.week-list-item { grid-template-columns: 3.25rem minmax(0, 1fr) auto 1rem; gap: 1rem; padding: 1.05rem 0; background: transparent; transition: padding 150ms ease; }
.week-list-item:hover, .week-list-item:focus-visible { padding-right: 0.35rem; padding-left: 0.35rem; background: transparent; }
.week-list-item:hover .week-list-copy strong { color: var(--color-accent-strong); }
.week-list-number { display: block; width: auto; height: auto; border: 0; border-radius: 0; background: transparent; color: var(--color-accent-strong); font-size: 1.05rem; font-weight: 700; }
.week-list-copy { gap: 0.18rem; }
.week-list-copy strong { font-size: 1.02rem; transition: color 150ms ease; }
.week-list-copy small { font-size: 0.75rem; }
.week-list-item .progress-status { padding: 0; border-radius: 0; background: transparent; font-size: 0.72rem; }
.week-list-item .progress-status.is-complete { background: transparent; color: #17633b; }

.week-block { margin: 1.8rem 0 1rem; padding: 0; border: 0; border-radius: 0; background: transparent; }
.week-heading { align-items: center; justify-content: space-between; margin: 0 0 0.7rem; padding: 0 0 1rem; border-bottom: 1px solid var(--color-line); }
.week-heading h2 { font-size: clamp(1.3rem, 2vw, 1.7rem); letter-spacing: -0.03em; }
.lesson-row { align-items: center; padding: 0.95rem 0; border-top: 1px solid #e7eeeb; }
.lesson-row button { font-size: 0.98rem; }
.lesson-view { margin: 0.2rem 0 1.15rem; padding: 0; border-radius: 0; background: transparent; }
.lesson-copy { max-width: 72ch; padding: 0.9rem 0; line-height: 1.75; }
.video-frame { border-radius: 0.6rem; }

.privacy-page a, .privacy-inline a { color: var(--color-accent-strong); text-underline-offset: 0.16em; }
.privacy-page { max-width: 850px; padding-top: 2.5rem; padding-bottom: 3.5rem; }
.privacy-page h1 { margin-top: 0; font-size: clamp(2.4rem, 5vw, 4rem); line-height: 1.08; }
.privacy-page .page-intro { max-width: 48rem; }
.privacy-page section { padding: 1.15rem 0; border-top: 1px solid var(--color-line); }
.privacy-page h2 { margin-bottom: 0.6rem; font-size: 1.2rem; }
.privacy-page p, .privacy-page li { color: var(--color-muted); line-height: 1.7; }
.privacy-page ul { margin: 0; padding-left: 1.35rem; }
.privacy-page li + li { margin-top: 0.35rem; }
.privacy-page strong { color: var(--color-ink); }
.privacy-inline { margin: 1.2rem 0 0; color: var(--color-muted); font-size: 0.79rem; }

/* Remove native fieldset chrome and give quiz controls a clear, spaced footer. */
.quiz-box { margin: 1.4rem 0 1.8rem; padding: 1.2rem 0 1.1rem; border: 0; border-top: 1px solid var(--color-line); border-bottom: 1px solid var(--color-line); border-radius: 0; background: transparent; box-shadow: none; }
.quiz-header { align-items: center; margin-bottom: 0.65rem; }
.quiz-box h3 { font-size: 1.15rem; letter-spacing: -0.02em; }
.quiz-navigator { margin: 1.1rem 0 0.4rem; }
.quiz-nav-meta { display: flex; justify-content: space-between; gap: 1rem; color: var(--color-muted); font-size: 0.78rem; }
.quiz-current-label { color: var(--color-accent-strong); font-weight: 700; }
.quiz-question-picker { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.65rem; }
.quiz-question-picker button { position: relative; display: inline-grid; min-width: 2.1rem; height: 2.1rem; place-items: center; padding: 0 0.4rem; border: 1px solid #bed6d4; border-radius: 0.45rem; background: #fff; color: var(--color-accent-strong); cursor: pointer; font: 700 0.78rem var(--font-mono); }
.quiz-question-picker button:hover, .quiz-question-picker button:focus-visible { border-color: var(--color-accent-strong); outline-offset: 2px; }
.quiz-question-picker button.is-answered { border-color: #0d8790; background: #eaf8f8; color: #075f67; }
.quiz-question-picker button.is-answered::after, .quiz-question-picker button.is-correct::after, .quiz-question-picker button.is-incorrect::after { position: absolute; right: 0.13rem; bottom: 0.02rem; font: 700 0.62rem var(--font-mono); }
.quiz-question-picker button.is-answered::after { content: "•"; }
.quiz-question-picker button.is-correct { border-color: #198344; background: #e8f5ec; color: #17633b; }
.quiz-question-picker button.is-correct::after { content: "✓"; }
.quiz-question-picker button.is-incorrect { border-color: #b54046; background: #fff0f0; color: #9f252d; }
.quiz-question-picker button.is-incorrect::after { content: "×"; }
.quiz-question-picker button[aria-current="step"] { border-color: var(--color-accent-strong); background: var(--color-accent-strong); color: #fff; }
.quiz-question-picker button.is-correct[aria-current="step"] { border-color: #17633b; background: #17633b; color: #fff; }
.quiz-question-picker button.is-incorrect[aria-current="step"] { border-color: #9f252d; background: #9f252d; color: #fff; }
.quiz-box fieldset.quiz-question { display: block; box-sizing: border-box; width: 100%; min-inline-size: 0; margin: 1.3rem 0 0; padding: 0; border: 0; border-radius: 0; background: transparent; appearance: none; }
.quiz-box fieldset.quiz-question[hidden], .quiz-box .quiz-footer-actions [hidden] { display: none !important; }
.quiz-box fieldset.quiz-question legend { display: flex; float: none; align-items: baseline; gap: 0.65rem; box-sizing: border-box; width: 100%; max-width: none; margin: 0 0 0.55rem; padding: 0; color: var(--color-ink); }
.quiz-question-number { flex: 0 0 auto; color: var(--color-accent-strong); font: 700 0.74rem var(--font-mono); }
.quiz-question-prompt { font-weight: 700; line-height: 1.5; white-space: pre-wrap; }
.quiz-option { display: flex; align-items: center; gap: 0.75rem; width: 100%; margin: 0; padding: 0.75rem 0.25rem; border: 0; border-bottom: 1px solid #e7eeeb; border-radius: 0; background: transparent; color: var(--color-muted); line-height: 1.5; transition: color 150ms ease, padding 150ms ease, background 150ms ease; }
.quiz-option:hover { padding-right: 0.55rem; padding-left: 0.55rem; border-color: #d4e6e2; background: #f6fbfa; color: var(--color-ink); }
.quiz-option:has(input:checked) { padding-left: 0.6rem; box-shadow: inset 3px 0 var(--color-brand-cyan); background: #f2fbfa; color: var(--color-ink); }
.quiz-option.is-correct, .quiz-option.is-correct:has(input:checked) { padding-left: 0.6rem; box-shadow: inset 3px 0 #198344; background: #e8f5ec; color: #17633b; }
.quiz-option.is-incorrect, .quiz-option.is-incorrect:has(input:checked) { padding-left: 0.6rem; box-shadow: inset 3px 0 #b54046; background: #fff0f0; color: #9f252d; }
.quiz-option input { width: 1.05rem; height: 1.05rem; margin: 0; accent-color: var(--color-accent-strong); }
.quiz-option input:focus-visible { outline: 3px solid #91dfe0; outline-offset: 3px; }
.quiz-answer-feedback { margin: 0.9rem 0 0; padding: 0.7rem 0.85rem; border-left: 3px solid #198344; border-radius: 0.2rem; background: #e8f5ec; color: #17633b; font-size: 0.84rem; line-height: 1.5; }
.quiz-question[data-result="incorrect"] .quiz-answer-feedback { border-left-color: #b54046; background: #fff0f0; color: #8d252b; }
.quiz-answer-feedback[hidden] { display: none; }
.quiz-placeholder-note { max-width: 72ch; margin: 0.65rem 0 0; padding-left: 0.7rem; border-left: 2px solid var(--color-brand-gold); font-size: 0.78rem; line-height: 1.55; }
.quiz-footer { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; margin-top: 1.2rem; padding-top: 0.9rem; border-top: 1px solid var(--color-line); }
.quiz-footer .form-message { flex: 1 1 15rem; min-height: 0; margin: 0; }
.quiz-footer .form-message:empty { display: none; }
.quiz-footer-actions { display: flex; flex: 0 0 auto; flex-wrap: wrap; gap: 0.55rem; margin-left: auto; }
.quiz-footer-actions .button { min-height: 44px; padding: 0.65rem 1.15rem; white-space: nowrap; }
.quiz-submit { flex: 0 0 auto; min-height: 44px; padding: 0.65rem 1.15rem; white-space: nowrap; }
.quiz-attempt-history { margin-top: 0.9rem; padding-top: 0.8rem; }

@media (max-width: 650px) {
  .week-list-item { grid-template-columns: 2.1rem minmax(0, 1fr) auto 0.7rem; gap: 0.6rem; padding: 0.9rem 0; }
  .week-list-number { font-size: 0.88rem; }
  .week-list-copy strong { font-size: 0.88rem; }
  .week-list-copy small { font-size: 0.65rem; }
  .week-list-item .progress-status { font-size: 0.6rem; }
  .week-heading { align-items: flex-start; }
  .quiz-header { align-items: flex-start; flex-direction: column; }
  .quiz-footer { align-items: flex-end; }
  .quiz-footer .form-message { flex: 1 1 100%; }
  .quiz-footer-actions { width: 100%; justify-content: space-between; }
}

/* Sidebar progress uses one clean outline when unfinished and a solid green tick when complete. */
.week-sidebar-status { border: 1.5px solid #6aa977; background: transparent; color: #fff; }
.week-sidebar-status.is-complete { border-color: #198344; background: #198344; color: #fff; }

/* Admin member directory and individual account panel. */
.admin-members-layout { display: grid; grid-template-columns: minmax(240px, 0.62fr) minmax(0, 1.38fr); gap: 1rem; align-items: start; }
.admin-invite-details { padding: 1rem 1.1rem; }
.admin-invite-details > summary { display: flex; align-items: center; justify-content: space-between; gap: 1rem; cursor: pointer; list-style: none; }
.admin-invite-details > summary::-webkit-details-marker { display: none; }
.admin-invite-details > summary > span:first-child { display: grid; gap: 0.15rem; }
.admin-invite-details > summary strong { color: var(--color-ink); font-size: 0.92rem; }
.admin-invite-details > summary small { color: var(--color-muted); font-size: 0.73rem; }
.admin-invite-details > summary > span:last-child { color: var(--color-accent-strong); font-size: 1.25rem; }
.admin-invite-details[open] > summary { padding-bottom: 0.85rem; border-bottom: 1px solid var(--color-line); }
.admin-invite-content, .admin-invite-preview { padding-top: 0.85rem; }
.csv-review:not(:empty) { margin-top: 1rem; padding: 1rem; border: 1px solid var(--color-line); border-radius: var(--radius-sm); background: var(--color-paper); }
.csv-review h3 { margin: 0 0 0.55rem; font-size: 1rem; }
.csv-review p { margin: 0.55rem 0; color: var(--color-muted); font-size: 0.8rem; line-height: 1.5; overflow-wrap: anywhere; }
.csv-review p strong { color: var(--color-ink); }
.csv-review details { margin-top: 0.65rem; color: var(--color-muted); font-size: 0.8rem; }
.csv-review summary { color: var(--color-accent-strong); cursor: pointer; font-weight: 700; }
.csv-review details p { max-height: 9rem; overflow: auto; }
.csv-review .button { margin-top: 0.75rem; }
.csv-review .csv-review-warning { color: var(--color-danger); }
.admin-users-panel { min-width: 0; }
.admin-users-panel .panel-heading { align-items: flex-start; margin-bottom: 0.3rem; }
.admin-users-panel .panel-heading h2 { margin: 0; }
.admin-users-panel .panel-heading .panel-muted { margin: 0.35rem 0 0; }
.admin-user-search { margin-top: 1.2rem; }
.admin-user-list { max-height: 680px; overflow: auto; align-content: start; }
.admin-user-row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.85rem 0; border-top: 1px solid #e8eeeb; }
.admin-user-identity { min-width: 0; }
.admin-user-identity strong { display: block; overflow-wrap: anywhere; color: var(--color-ink); font-size: 0.88rem; }
.admin-user-identity small { display: flex; flex-wrap: wrap; gap: 0.3rem; margin-top: 0.25rem; color: var(--color-muted); font-size: 0.7rem; }
.admin-user-row > .button { flex: 0 0 auto; }
.member-panel-open { overflow: hidden; }
.member-panel-overlay { position: fixed; z-index: 60; inset: 0; }
.toast-region { z-index: 70; }
.member-panel-scrim { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; border-radius: 0; background: rgb(14 30 32 / 42%); cursor: default; }
.member-detail-panel { position: absolute; top: 0; right: 0; bottom: 0; display: flex; flex-direction: column; width: min(660px, 100%); background: var(--color-paper); box-shadow: -12px 0 45px rgb(18 35 34 / 15%); outline: none; }
.member-panel-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; padding: 1.35rem 1.5rem 1.1rem; border-bottom: 1px solid var(--color-line); }
.member-panel-header > div { min-width: 0; }
.member-panel-header p { margin: 0 0 0.35rem; color: var(--color-accent-strong); font: 500 0.68rem var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; }
.member-panel-header h2 { margin: 0; color: var(--color-ink); font-size: clamp(1.15rem, 2.4vw, 1.5rem); overflow-wrap: anywhere; }
.member-panel-header small { display: block; margin-top: 0.4rem; color: var(--color-muted); font-size: 0.75rem; }
.member-panel-close { flex: 0 0 auto; width: 2.4rem; height: 2.4rem; border: 1px solid var(--color-line); border-radius: 50%; background: white; color: var(--color-ink); cursor: pointer; font-size: 1.3rem; line-height: 1; }
.member-panel-body { flex: 1 1 auto; overflow-y: auto; padding: 1.1rem 1.5rem 1.5rem; }
.member-panel-loading { display: flex; align-items: center; gap: 0.7rem; padding: 1rem 0; color: var(--color-muted); }
.member-panel-section + .member-panel-section { margin-top: 1.5rem; padding-top: 1.25rem; border-top: 1px solid var(--color-line); }
.member-panel-section-heading h3 { margin: 0; color: var(--color-ink); font-size: 1.08rem; }
.member-panel-section-heading p { margin: 0.25rem 0 0.75rem; color: var(--color-muted); font-size: 0.75rem; line-height: 1.5; }
.member-access-list { display: grid; gap: 0.55rem; }
.member-access-row { display: flex; align-items: center; justify-content: space-between; gap: 0.8rem; padding: 0.75rem 0.85rem; border: 1px solid var(--color-line); border-radius: var(--radius-sm); background: #fff; }
.member-access-copy { min-width: 0; }
.member-access-copy strong { display: block; color: var(--color-ink); font-size: 0.84rem; }
.member-access-copy small { display: block; margin-top: 0.2rem; color: var(--color-muted); font-size: 0.7rem; }
.member-access-row .button { flex: 0 0 auto; }
.member-access-row .member-revoke-button { color: #83504b; }
.member-progress-courses { display: grid; gap: 1.15rem; }
.member-course-progress { padding-top: 0.85rem; border-top: 1px solid #e8eeeb; }
.member-course-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 0.8rem; margin-bottom: 0.55rem; }
.member-course-heading h4 { margin: 0; color: var(--color-ink); font-size: 0.92rem; }
.member-course-heading p { margin: 0.2rem 0 0; color: var(--color-muted); font-size: 0.7rem; }
.member-progress-weeks { border-top: 1px solid #edf1ef; }
.member-progress-week { border-bottom: 1px solid #edf1ef; }
.member-progress-week > summary { display: grid; grid-template-columns: minmax(0, 1fr) 0.9rem auto; align-items: center; gap: 0.65rem; padding: 0.65rem 0.1rem; color: var(--color-ink); cursor: pointer; font-size: 0.77rem; font-weight: 700; list-style: none; }
.member-progress-week > summary::-webkit-details-marker { display: none; }
.member-progress-week > summary::before { content: "＋"; grid-column: 2; grid-row: 1; color: var(--color-accent-strong); font-size: 0.7rem; }
.member-progress-week[open] > summary::before { content: "−"; }
.member-progress-week > summary > span:last-child { grid-column: 3; grid-row: 1; color: var(--color-muted); font-size: 0.65rem; font-weight: 500; white-space: nowrap; }
.member-progress-week > summary > span:last-child.is-complete, .member-progress-item > span:last-child.is-complete { color: #198344; font-weight: 700; }
.member-progress-items { padding: 0 0.25rem 0.5rem 0.65rem; }
.member-progress-item { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 0.5rem; align-items: start; padding: 0.42rem 0; color: var(--color-muted); font-size: 0.7rem; }
.member-progress-item > span:first-child { min-width: 0; color: var(--color-ink); overflow-wrap: anywhere; }
.member-progress-item > span:last-child { text-align: right; font-size: 0.65rem; }
.member-progress-item small { display: block; margin-top: 0.15rem; color: var(--color-muted); font-size: 0.62rem; font-weight: 400; }
.member-progress-item .member-progress-attempt { color: #6d7d7b; }
.member-panel-footer { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.9rem 1.5rem; border-top: 1px solid var(--color-line); background: #fff; }
.member-panel-footer > span { color: var(--color-muted); font-size: 0.67rem; text-align: right; }
.member-panel-footer .admin-delete-account { padding: 0; border: 0; background: none; color: var(--color-danger); cursor: pointer; font-size: 0.75rem; font-weight: 700; }
.member-panel-footer .admin-delete-account:disabled { color: var(--color-muted); cursor: not-allowed; }

@media (max-width: 820px) {
  .admin-members-layout { grid-template-columns: 1fr; }
  .admin-invite-details { order: 2; }
  .admin-users-panel { order: 1; }
}
@media (max-width: 560px) {
  .member-panel-header { padding: 1rem; }
  .member-panel-body { padding: 0.85rem 1rem 1rem; }
  .member-panel-footer { padding: 0.75rem 1rem; }
  .member-access-row { align-items: flex-start; flex-direction: column; }
  .member-access-row .button { align-self: flex-start; }
  .member-progress-week > summary { grid-template-columns: minmax(0, 1fr) auto; }
  .member-progress-week > summary::before { grid-column: 2; grid-row: 2; }
  .member-progress-week > summary > span:last-child { grid-column: 1; grid-row: 2; margin: 0; }
  .member-progress-item { grid-template-columns: minmax(0, 1fr); }
  .member-progress-item > span:last-child { text-align: left; }
  .member-course-heading { flex-direction: column; }
}

/* Persistent dark theme */
html[data-theme="dark"] {
  color-scheme: dark;
  --color-paper: #10191d;
  --color-surface: #19272c;
  --color-ink: #e6efed;
  --color-muted: #a3b3b4;
  --color-line: #34484c;
  --color-accent: #62d8d7;
  --color-accent-strong: #7be4df;
  --color-accent-soft: #193a3d;
  --color-highlight-soft: #43391c;
  --color-highlight-ink: #ffe595;
  --color-danger: #ff9992;
  --shadow-card: 0 16px 45px rgba(0, 0, 0, 0.28);
}

html[data-theme="dark"] .step,
html[data-theme="dark"] .field input,
html[data-theme="dark"] .field textarea,
html[data-theme="dark"] .field select,
html[data-theme="dark"] .admin-list-item,
html[data-theme="dark"] .member-access-row,
html[data-theme="dark"] .member-panel-footer,
html[data-theme="dark"] .member-panel-close { background: var(--color-surface); }

html[data-theme="dark"] .field input,
html[data-theme="dark"] .field textarea,
html[data-theme="dark"] .field select,
html[data-theme="dark"] .quiz-box,
html[data-theme="dark"] .quiz-question,
html[data-theme="dark"] .quiz-question-picker button,
html[data-theme="dark"] .admin-list-item,
html[data-theme="dark"] .member-access-row,
html[data-theme="dark"] .empty-state { border-color: var(--color-line); }

html[data-theme="dark"] .notice { border-color: #79672f; }
html[data-theme="dark"] .notice-info { border-color: #31595b; }
html[data-theme="dark"] .week-list-item:hover,
html[data-theme="dark"] .week-list-item:focus-visible,
html[data-theme="dark"] .week-list-number { background: var(--color-accent-soft); }
html[data-theme="dark"] .progress-status { background: #26353a; }
html[data-theme="dark"] .progress-status.is-complete,
html[data-theme="dark"] .progress-toggle.is-complete,
html[data-theme="dark"] .week-sidebar-status.is-complete { border-color: #3e7653; background: #1c382a; color: #9ae4b3; }
html[data-theme="dark"] .progress-toggle.is-complete:hover { border-color: #5b966f; background: #244732; }
html[data-theme="dark"] .week-sidebar-status { border-color: #53666a; color: var(--color-muted); }
html[data-theme="dark"] .lesson-row,
html[data-theme="dark"] .admin-member-course,
html[data-theme="dark"] .admin-user-row,
html[data-theme="dark"] .member-course-progress,
html[data-theme="dark"] .member-progress-weeks,
html[data-theme="dark"] .member-progress-week,
html[data-theme="dark"] .quiz-attempt-history { border-color: var(--color-line); }
html[data-theme="dark"] .lesson-view,
html[data-theme="dark"] .quiz-attempt-history li { background: #142126; }
html[data-theme="dark"] .lesson-copy { color: var(--color-ink); }
html[data-theme="dark"] .quiz-box,
html[data-theme="dark"] .quiz-box fieldset.quiz-question { background: transparent; }
html[data-theme="dark"] .quiz-option,
html[data-theme="dark"] .quiz-question-picker button { background: transparent; }
html[data-theme="dark"] .quiz-option { border-bottom-color: var(--color-line); }
html[data-theme="dark"] .quiz-option:hover,
html[data-theme="dark"] .quiz-question-picker button.is-answered { border-color: #397175; background: #193a3d; color: #8be4df; }
html[data-theme="dark"] .quiz-option:has(input:checked) { background: #193a3d; }
html[data-theme="dark"] .quiz-question-picker button.is-correct,
html[data-theme="dark"] .quiz-option.is-correct,
html[data-theme="dark"] .quiz-option.is-correct:has(input:checked),
html[data-theme="dark"] .quiz-answer-feedback { border-color: #3e7653; background: #1c382a; color: #9ae4b3; }
html[data-theme="dark"] .quiz-question-picker button.is-incorrect,
html[data-theme="dark"] .quiz-option.is-incorrect,
html[data-theme="dark"] .quiz-option.is-incorrect:has(input:checked),
html[data-theme="dark"] .quiz-question[data-result="incorrect"] .quiz-answer-feedback { border-color: #84494b; background: #3b2528; color: #ffa4a1; }
html[data-theme="dark"] .quiz-question-picker button[aria-current="step"] { background: var(--color-accent-strong); color: #102326; }
html[data-theme="dark"] .quiz-question-picker button.is-correct[aria-current="step"] { background: #32734b; color: #fff; }
html[data-theme="dark"] .quiz-question-picker button.is-incorrect[aria-current="step"] { background: #8d363b; color: #fff; }
html[data-theme="dark"] .quiz-attempt-history li strong,
html[data-theme="dark"] .member-progress-week > summary > span:last-child.is-complete,
html[data-theme="dark"] .member-progress-item > span:last-child.is-complete { color: #9ae4b3; }
html[data-theme="dark"] .status-draft { background: #29373a; }
html[data-theme="dark"] .member-panel-close { color: var(--color-ink); }
html[data-theme="dark"] .member-access-row .member-revoke-button { color: #ffaaa4; }
html[data-theme="dark"] .member-progress-item .member-progress-attempt { color: var(--color-muted); }
.maintenance-wrap{min-height:70vh;display:grid;place-items:center;padding-block:3rem}
.maintenance-card{width:min(100%,640px);text-align:center;padding:clamp(2rem,5vw,4rem);background:var(--color-surface);border:1px solid var(--color-line);border-radius:28px;box-shadow:0 20px 60px rgba(13,53,58,.06)}
.maintenance-card img{width:104px;height:104px;object-fit:contain;margin-bottom:1.5rem}
.maintenance-card h1{margin:0 0 1rem;font-size:clamp(2.2rem,6vw,4rem);line-height:1.08}
.maintenance-card p{margin:0;color:var(--color-muted);font-size:1.1rem;line-height:1.65}
.maintenance-admin-link{display:inline-block;margin-top:2rem;color:var(--color-accent);font-weight:700}
.maintenance-control{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;margin:1.5rem 0 2rem;padding:1.35rem 1.5rem;border:1px solid var(--color-line);border-radius:20px;background:var(--color-surface)}
.maintenance-control h2{margin:0 0 .35rem;font-size:1.3rem}
.maintenance-control p{margin:0;color:var(--color-muted);line-height:1.5}
.maintenance-control .button{white-space:nowrap}
@media(max-width:620px){.maintenance-control{align-items:flex-start;flex-direction:column}.maintenance-control .button{width:100%}}