/* css/learn.css — BBM Masterclass LMS styles Namespace boundary: every selector starts with .learn-* or targets elements inside . Do not bleed marketing-site selectors into this file. */ /* Mobile-first guard against horizontal scroll/jitter. `clip` (not `hidden`) so it doesn't create a scroll container and break the sticky chapter nav/TOC. */ html { overflow-x: clip; } :root { /* Surface */ --learn-bg: #FAFAF7; --learn-surface: #FFFFFF; --learn-surface-2: #F4F2EC; /* Ink */ --learn-ink: #1A1815; --learn-ink-2: #4A463E; --learn-ink-3: #8A847A; /* Accent */ --learn-accent: #B8946A; --learn-accent-soft: #F4ECDB; --learn-success: #4A7A52; --learn-line: #E8E4DA; --learn-focus: #1A1815; /* Type */ --learn-serif: 'Fraunces', ui-serif, Georgia, serif; --learn-sans: 'Inter', ui-sans-serif, system-ui, sans-serif; --learn-mono: 'JetBrains Mono', ui-monospace, monospace; --text-xs: 12px; --text-sm: 14px; --text-base: 17px; --text-lg: 19px; --text-xl: 24px; --text-2xl: 32px; --text-3xl: 44px; --space-1: 8px; --space-2: 16px; --space-3: 24px; --space-4: 32px; --space-5: 48px; --space-6: 64px; --space-7: 96px; } body.learn { margin: 0; background: var(--learn-bg); color: var(--learn-ink); font-family: var(--learn-sans); font-size: var(--text-base); line-height: 1.65; letter-spacing: -0.005em; -webkit-font-smoothing: antialiased; } body.learn h1, body.learn h2, body.learn h3 { font-family: var(--learn-serif); font-weight: 400; letter-spacing: -0.02em; line-height: 1.15; } body.learn a { color: var(--learn-ink); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; } body.learn a:hover { color: var(--learn-accent); } body.learn :focus-visible { outline: 2px solid var(--learn-focus); outline-offset: 3px; } /* Auth pages (start.html, sign-in.html) — minimal centered card */ .learn-auth-shell { min-height: 100vh; display: grid; place-items: center; padding: var(--space-4); } .learn-auth-card { background: var(--learn-surface); max-width: 460px; width: 100%; padding: var(--space-5); border: 1px solid var(--learn-line); border-radius: 4px; } .learn-auth-card h1 { font-size: var(--text-2xl); margin: 0 0 var(--space-2); } .learn-auth-card p { color: var(--learn-ink-2); } .learn-auth-card label { display: block; font-size: var(--text-sm); margin-bottom: var(--space-1); color: var(--learn-ink-2); } .learn-auth-card input[type="email"], .learn-auth-card input[type="text"] { width: 100%; padding: 12px 14px; font-family: var(--learn-sans); font-size: var(--text-base); border: 1px solid var(--learn-line); border-radius: 4px; background: var(--learn-surface); box-sizing: border-box; } .learn-btn { display: inline-block; background: var(--learn-ink); color: var(--learn-surface); border: 0; padding: 12px 20px; font-family: var(--learn-sans); font-size: var(--text-base); font-weight: 500; border-radius: 4px; cursor: pointer; letter-spacing: -0.005em; transition: transform 100ms ease-out; } .learn-btn:hover { background: var(--learn-ink-2); } .learn-btn:active { transform: scale(0.98); } .learn-btn[disabled] { opacity: 0.4; cursor: not-allowed; } .learn-btn--accent { background: var(--learn-accent); color: var(--learn-surface); } .learn-btn--accent:hover { background: #A07F58; } .learn-error { color: #A8412B; font-size: var(--text-sm); margin-top: var(--space-2); } .learn-success { color: var(--learn-success); font-size: var(--text-sm); margin-top: var(--space-2); } /* ───── Chapter page layout ───── */ .learn-chapter-header { position: sticky; top: 0; z-index: 10; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: var(--space-3); height: 60px; padding: 0 var(--space-3); background: rgba(250, 250, 247, 0.85); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); border-bottom: 1px solid var(--learn-line); } .learn-wordmark { font-family: var(--learn-serif); font-size: var(--text-lg); letter-spacing: -0.01em; text-decoration: none; color: var(--learn-ink); } .learn-chapter-header-center { text-align: center; font-family: var(--learn-mono); font-size: var(--text-sm); color: var(--learn-ink-3); text-transform: lowercase; letter-spacing: 0.02em; } .learn-chapter-header-signout, .learn-dashboard-signout { font-family: var(--learn-mono); font-size: var(--text-sm); color: var(--learn-ink-3); text-decoration: none; } .learn-chapter-header-signout:hover, .learn-dashboard-signout:hover { color: var(--learn-accent); } .learn-chapter-main { max-width: 1440px; margin: 0 auto; padding: var(--space-5) var(--space-4); display: grid; grid-template-columns: 200px 1fr 420px; gap: var(--space-4); } @media (min-width: 1600px) { .learn-chapter-main { grid-template-columns: 220px 1fr 480px; gap: var(--space-5); } } .learn-chapter-toc { position: sticky; top: 96px; align-self: start; font-size: var(--text-sm); } .learn-chapter-toc summary { font-family: var(--learn-mono); color: var(--learn-ink-3); text-transform: lowercase; letter-spacing: 0.02em; cursor: pointer; margin-bottom: var(--space-2); } .learn-chapter-toc nav { display: grid; gap: var(--space-1); margin-top: var(--space-2); } .learn-chapter-toc nav a { text-decoration: none; color: var(--learn-ink-2); padding: 4px 0 4px 12px; border-left: 2px solid transparent; } .learn-chapter-toc nav a.is-active { color: var(--learn-ink); border-left-color: var(--learn-accent); } .learn-chapter-reading { /* Sized for ~65–72 characters per line at 17px body — Bringhurst comfortable range */ max-width: 72ch; } .learn-chapter-eyebrow { font-family: var(--learn-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.08em; color: var(--learn-ink-3); margin: 0 0 var(--space-1); } .learn-chapter-reading h1 { font-size: var(--text-3xl); margin: 0 0 var(--space-3); } .learn-chapter-reading h2 { font-size: var(--text-2xl); margin: var(--space-6) 0 var(--space-3); } .learn-chapter-reading h3 { font-size: var(--text-xl); margin: var(--space-5) 0 var(--space-2); } .learn-chapter-reading p { margin: 0 0 var(--space-3); } .learn-objectives { margin: var(--space-3) 0 var(--space-5); padding: var(--space-2) var(--space-3); border-left: 2px solid var(--learn-line); list-style: none; color: var(--learn-ink-2); } .learn-objectives li { margin: 4px 0; } .learn-chapter-video { position: sticky; top: 96px; align-self: start; } .learn-video-frame { background: var(--learn-surface); border: 1px solid var(--learn-line); border-radius: 4px; aspect-ratio: 16 / 9; overflow: hidden; } .learn-video-frame iframe { display: block; width: 100%; height: 100%; border: 0; } .learn-video-empty, .learn-video-placeholder { display: grid; place-items: center; height: 100%; color: var(--learn-ink-3); font-family: var(--learn-mono); font-size: var(--text-sm); } /* ───── Three primitives ───── */ .learn-callout { background: var(--learn-accent-soft); border-left: 3px solid var(--learn-accent); padding: 28px 32px; margin: var(--space-4) 0; border-radius: 0 4px 4px 0; } .learn-callout-label { font-family: var(--learn-mono); font-size: var(--text-xs); text-transform: lowercase; letter-spacing: 0.04em; color: var(--learn-ink-3); margin-bottom: var(--space-1); } .learn-callout-title { margin: 0 0 var(--space-2); font-size: var(--text-xl); } .learn-callout-body p:last-child { margin-bottom: 0; } .learn-quote { margin: var(--space-6) 0; text-align: center; border: 0; padding: 0; } .learn-quote p { font-family: var(--learn-serif); font-size: 28px; font-weight: 300; font-style: italic; line-height: 1.35; color: var(--learn-ink); margin: 0 0 var(--space-2); } .learn-quote cite { font-family: var(--learn-mono); font-size: 11px; color: var(--learn-ink-3); font-style: normal; text-transform: uppercase; letter-spacing: 0.08em; } .learn-framework { background: var(--learn-surface); border: 1px solid var(--learn-line); border-radius: 4px; padding: 40px 48px; margin: var(--space-5) 0; } .learn-framework-label { font-family: var(--learn-mono); font-size: var(--text-xs); text-transform: lowercase; letter-spacing: 0.04em; color: var(--learn-ink-3); } .learn-framework-title { margin: var(--space-1) 0 var(--space-4); font-size: var(--text-xl); } .learn-framework-steps { list-style: none; padding: 0; margin: 0; } .learn-framework-steps > li { display: grid; grid-template-columns: 56px 1fr; gap: var(--space-3); padding: var(--space-3) 0; border-top: 1px solid var(--learn-line); } .learn-framework-steps > li:first-child { border-top: 0; padding-top: 0; } .learn-framework-step-number { font-family: var(--learn-mono); font-size: 32px; color: var(--learn-accent); letter-spacing: -0.02em; line-height: 1; } .learn-framework-step-body p { margin: 0 0 var(--space-1); } .learn-framework-step-body p:last-child { margin-bottom: 0; } /* ───── Worksheet ───── */ .learn-worksheet { margin-top: var(--space-7); padding-top: var(--space-5); border-top: 1px solid var(--learn-line); } .learn-worksheet h2 { margin-top: 0; } .learn-worksheet-intro { color: var(--learn-ink-2); margin-bottom: var(--space-4); } .learn-question { margin-bottom: var(--space-5); } .learn-question-prompt { display: block; font-family: var(--learn-serif); font-size: var(--text-lg); margin-bottom: var(--space-1); color: var(--learn-ink); } .learn-question-meta { font-family: var(--learn-mono); font-size: var(--text-xs); color: var(--learn-ink-3); margin: 0 0 var(--space-2); } .learn-question textarea { width: 100%; min-height: 140px; padding: 14px; box-sizing: border-box; font-family: var(--learn-sans); font-size: var(--text-base); line-height: 1.6; border: 1px solid var(--learn-line); border-radius: 4px; background: var(--learn-surface); resize: vertical; } .learn-save-indicator { font-family: var(--learn-mono); font-size: var(--text-xs); color: var(--learn-ink-3); margin: 4px 0 0; transition: opacity 200ms ease-out; } .learn-mark-complete-row { display: flex; align-items: center; gap: var(--space-2); margin-top: var(--space-4); } .learn-mark-complete-status { color: var(--learn-ink-3); font-size: var(--text-sm); margin: 0; } .learn-chapter-footer { max-width: 1280px; margin: var(--space-7) auto var(--space-5); padding: var(--space-4) var(--space-6); display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--learn-line); font-family: var(--learn-mono); font-size: var(--text-sm); color: var(--learn-ink-3); } .learn-chapter-footer a { color: var(--learn-ink-2); text-decoration: none; } .learn-chapter-footer a:hover { color: var(--learn-accent); } /* ───── Dashboard ───── */ .learn-dashboard-header { display: grid; grid-template-columns: auto 1fr auto; align-items: center; height: 60px; padding: 0 var(--space-3); border-bottom: 1px solid var(--learn-line); background: var(--learn-bg); } .learn-dashboard-main { max-width: 920px; margin: 0 auto; padding: var(--space-5) var(--space-3); } .learn-dashboard-hero h1 { margin: 0 0 var(--space-1); font-size: var(--text-3xl); } .learn-dashboard-tagline { color: var(--learn-ink-2); margin: 0 0 var(--space-4); } .learn-dashboard-progress { display: flex; align-items: center; gap: var(--space-2); } .learn-progress-bar { display: inline-block; width: 200px; height: 8px; background: var(--learn-surface-2); border-radius: 4px; overflow: hidden; } .learn-progress-bar > span { display: block; height: 100%; background: var(--learn-accent); width: 0; transition: width 300ms ease-out; } .learn-continue-card { margin-top: var(--space-4); background: var(--learn-surface); border: 1px solid var(--learn-line); border-radius: 4px; padding: var(--space-4); } .learn-continue-card h2 { margin: 0 0 var(--space-2); font-size: var(--text-xl); } .learn-dashboard-list { margin-top: var(--space-6); } .learn-dashboard-list h2 { font-size: var(--text-xl); margin: 0 0 var(--space-3); } #learn-chapter-list { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--learn-line); } #learn-chapter-list > li { border-bottom: 1px solid var(--learn-line); } #learn-chapter-list > li > a { display: grid; grid-template-columns: 32px 32px 1fr auto auto; gap: var(--space-2); align-items: baseline; padding: var(--space-3) var(--space-2); color: var(--learn-ink); text-decoration: none; } #learn-chapter-list > li > a:hover { background: var(--learn-surface-2); } .learn-status { font-family: var(--learn-mono); } .learn-status--complete { color: var(--learn-success); } .learn-status--in-progress { color: var(--learn-accent); } .learn-status--locked { color: var(--learn-ink-3); } .learn-chapter-num { font-family: var(--learn-mono); color: var(--learn-ink-3); } .learn-chapter-status-text { color: var(--learn-ink-3); font-size: var(--text-sm); } .learn-chapter-duration { color: var(--learn-ink-3); font-family: var(--learn-mono); font-size: var(--text-sm); } /* ───── Mobile (<1024px) ───── */ @media (max-width: 1023px) { .learn-chapter-main { grid-template-columns: 1fr; padding: var(--space-3); gap: var(--space-3); } .learn-chapter-toc { position: static; order: 0; } .learn-chapter-reading { order: 2; max-width: none; } .learn-chapter-video { order: 1; position: static; width: 100%; } .learn-chapter-video.is-docked { position: sticky; top: 60px; z-index: 5; transition: transform 250ms ease-out; } } /* ───── Header actions (layout toggle + sign out) ───── */ .learn-chapter-header-actions { display: flex; align-items: center; gap: var(--space-2); } .learn-chapter-header-action { background: transparent; border: 1px solid var(--learn-line); border-radius: 4px; padding: 4px 10px; font-family: var(--learn-mono); font-size: var(--text-xs); color: var(--learn-ink-3); text-transform: lowercase; letter-spacing: 0.04em; cursor: pointer; transition: color 100ms, border-color 100ms; } .learn-chapter-header-action:hover { color: var(--learn-ink); border-color: var(--learn-ink-3); } .learn-chapter-header-action[aria-pressed="true"] { color: var(--learn-accent); border-color: var(--learn-accent); } /* ───── Local