/* ============================================================
   DIGITAL INTELLIGENCE: THE 30-DAY COURSE — css/di-course.css
   ------------------------------------------------------------
   Loaded after design-system/styles.css and css/style.css on the
   day shells and the roadmap page. Every colour resolves to a
   design-system token (docs/COLOR_THEME.md); nothing here declares
   an opaque literal surface or text colour.
   ============================================================ */
.di-shell {
    width: min(760px, calc(100% - 40px));
    margin: 0 auto;
    padding: 96px 0 80px;
}
.di-hero { margin-bottom: 36px; }
.di-eyebrow {
    font: var(--fw-medium) 11px/1.4 var(--font-mono);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-accent);
}
.di-eyebrow a { color: inherit; text-decoration: none; }
.di-eyebrow a:hover { text-decoration: underline; }
.di-title {
    margin: 14px 0 12px;
    font-size: clamp(34px, 5.5vw, 54px);
    line-height: 1.02;
    letter-spacing: -0.035em;
    color: var(--text-primary);
}
.di-kicker {
    margin: 0;
    font-size: clamp(17px, 2vw, 20px);
    line-height: 1.55;
    color: var(--text-secondary);
}
.di-section-tag {
    margin: 14px 0 0;
    font-size: var(--text-body-sm);
    color: var(--text-tertiary);
}
.di-section-tag strong { color: var(--text-secondary); font-weight: var(--fw-medium); }
.di-skill-link { margin-left: 6px; color: var(--text-accent); text-decoration: none; }
.di-skill-link:hover { text-decoration: underline; }

.di-body { min-height: 120px; }
.di-notice {
    padding: 22px 24px;
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    background: color-mix(in srgb, var(--surface-1) 94%, transparent);
    color: var(--text-secondary);
    line-height: 1.6;
}
.di-notice p { margin: 0 0 10px; }
.di-notice p:last-child { margin: 0; }
.di-notice a { color: var(--text-accent); }

.di-read { font-size: clamp(17px, 1.9vw, 19px); line-height: 1.7; color: var(--text-primary); }
.di-read p { margin: 0 0 18px; }

.di-guess {
    margin: 30px 0;
    padding: 22px 24px;
    border: 1px solid var(--border-default);
    border-left: 3px solid var(--accent);
    border-radius: var(--radius-lg);
    background: color-mix(in srgb, var(--surface-1) 94%, transparent);
}
.di-guess:first-child { margin-top: 0; }
.di-guess-kicker { font: var(--fw-medium) 11px/1.4 var(--font-mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-accent); margin: 0 0 8px; }
.di-guess-q { margin: 0 0 14px; font-weight: var(--fw-medium); color: var(--text-primary); line-height: 1.5; }
.di-guess-opts { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.di-guess-opts button {
    text-align: left; width: 100%; padding: 11px 14px; cursor: pointer;
    border: 1px solid var(--border-default); border-radius: var(--radius-md);
    background: transparent; color: var(--text-primary); font: inherit; line-height: 1.45;
}
.di-guess-opts button:hover { border-color: var(--border-strong); }
.di-guess-opts button[disabled] { cursor: default; opacity: 0.85; }
.di-guess-opts button.is-right { border-color: var(--success-bright); }
.di-guess-opts button.is-wrong { border-color: var(--danger-bright); }
.di-guess-explain { margin: 14px 0 0; color: var(--text-secondary); line-height: 1.55; }

.di-carry {
    margin: 30px 0 0;
    padding: 18px 22px;
    border-radius: var(--radius-lg);
    background: color-mix(in srgb, var(--accent) 8%, transparent);
    color: var(--text-secondary);
    line-height: 1.6;
}
.di-carry-label { font: var(--fw-medium) 11px/1.4 var(--font-mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-accent); margin: 0 0 6px; }
.di-carry blockquote { margin: 10px 0 0; padding-left: 14px; border-left: 2px solid var(--border-strong); white-space: pre-wrap; color: var(--text-primary); }
.di-carry .di-carry-day { font-size: var(--text-body-sm); color: var(--text-tertiary); margin: 8px 0 0; }

.di-question { margin: 26px 0 0; }
.di-question h2 { margin: 0 0 8px; font-size: clamp(22px, 3vw, 28px); letter-spacing: -0.02em; }
.di-question .di-prompt { margin: 0 0 8px; font-size: 18px; line-height: 1.6; color: var(--text-primary); }
.di-question .di-help { margin: 0 0 14px; color: var(--text-tertiary); line-height: 1.55; font-size: var(--text-body-sm); }
.di-scope { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 14px; }
.di-scope label {
    display: inline-flex; align-items: center; gap: 8px; padding: 9px 14px; cursor: pointer;
    border: 1px solid var(--border-default); border-radius: 999px; color: var(--text-primary);
}
.di-scope label:has(input:checked) { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, transparent); }
.di-answer {
    width: 100%; min-height: 180px; resize: vertical; padding: 14px 16px;
    border: 1px solid var(--border-default); border-radius: var(--radius-md);
    background: color-mix(in srgb, var(--surface-1) 94%, transparent);
    color: var(--text-primary); font: inherit; font-size: 16px; line-height: 1.6;
}
.di-answer:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.di-answer-row { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin: 12px 0 0; }
.di-answer-status { color: var(--text-tertiary); font-size: var(--text-body-sm); }
.di-answer-status.is-error { color: var(--danger-bright); }
.di-count { margin-left: auto; color: var(--text-tertiary); font-size: var(--text-body-sm); font-family: var(--font-mono); }

.di-try { margin: 30px 0 0; padding-top: 22px; border-top: 1px solid var(--border-subtle); }
.di-try-label { font: var(--fw-medium) 11px/1.4 var(--font-mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-accent); margin: 0 0 6px; }
.di-try p { margin: 0; font-size: 17px; line-height: 1.6; color: var(--text-primary); }

.di-daynav { display: flex; justify-content: space-between; gap: 12px; margin: 44px 0 0; padding-top: 18px; border-top: 1px solid var(--border-subtle); }
.di-daynav a { color: var(--text-accent); text-decoration: none; }
.di-daynav a:hover { text-decoration: underline; }

/* The syllabus strip a signed-in learner sees under the reading. */
.di-days { display: grid; grid-template-columns: repeat(auto-fill, minmax(34px, 1fr)); gap: 6px; margin: 26px 0 0; padding: 0; list-style: none; }
.di-days a, .di-days span {
    display: block; text-align: center; padding: 7px 0; border-radius: var(--radius-sm);
    border: 1px solid var(--border-default); font-family: var(--font-mono); font-size: 12px; text-decoration: none; color: var(--text-secondary);
}
.di-days .is-done { border-color: var(--success-bright); color: var(--text-primary); }
.di-days .is-today { border-color: var(--accent); color: var(--text-primary); }
.di-days .is-locked { opacity: 0.45; }

/* ---- Landing ---- */
.di-h2 { margin: 0 0 8px; font-size: clamp(24px, 3.4vw, 32px); letter-spacing: -0.025em; }
.di-syllabus { margin: 0; padding: 0; list-style: none; }
.di-syllabus li { display: flex; gap: 14px; align-items: baseline; padding: 8px 0; border-top: 1px solid var(--border-subtle); }
.di-syllabus li:first-child { border-top: 0; }
.di-syllabus-day { flex: 0 0 64px; font-family: var(--font-mono); font-size: 12px; color: var(--text-tertiary); letter-spacing: 0.06em; text-transform: uppercase; }
.di-syllabus a { color: var(--text-primary); text-decoration: none; }
.di-syllabus a:hover { color: var(--text-accent); }

/* ---- Roadmap ---- */
.di-print-row { margin: 18px 0 0; }
.di-roadmap-scope { font: var(--fw-medium) 11px/1.4 var(--font-mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-accent); margin: 0 0 6px; }
.di-roadmap-situation { white-space: pre-wrap; font-size: 18px; line-height: 1.6; margin: 0 0 30px; color: var(--text-primary); }
.di-roadmap-section { margin: 0 0 28px; padding: 22px 24px; border: 1px solid var(--border-default); border-radius: var(--radius-lg); background: color-mix(in srgb, var(--surface-1) 94%, transparent); }
.di-roadmap-section h2 { margin: 0 0 4px; font-size: 22px; letter-spacing: -0.02em; }
.di-roadmap-section .di-domain { color: var(--text-tertiary); font-size: var(--text-body-sm); margin: 0 0 12px; }
.di-roadmap-section .di-section-text { white-space: pre-wrap; line-height: 1.65; color: var(--text-primary); margin: 0; }
.di-roadmap-section .di-section-empty { color: var(--text-tertiary); font-style: italic; margin: 0; }
.di-roadmap-section details { margin: 14px 0 0; }
.di-roadmap-section summary { cursor: pointer; color: var(--text-secondary); font-size: var(--text-body-sm); }
.di-roadmap-section .di-day-answer { margin: 12px 0 0; padding-left: 12px; border-left: 2px solid var(--border-subtle); }
.di-roadmap-section .di-day-answer .di-day-title { font-size: var(--text-body-sm); color: var(--text-tertiary); margin: 0 0 4px; }
.di-roadmap-section .di-day-answer p { white-space: pre-wrap; margin: 0; line-height: 1.55; }
.di-roadmap-final { margin: 8px 0 0; padding: 24px; border: 2px solid var(--accent); border-radius: var(--radius-lg); }
.di-roadmap-final h2 { margin: 0 0 12px; }
.di-roadmap-final p { white-space: pre-wrap; line-height: 1.65; margin: 0; font-size: 17px; }

@media print {
    .navbar, .footer, .di-daynav, .di-print-row, #di-print, .theme-toggle, [data-theme-toggle], summary { display: none !important; }
    .di-shell { width: auto; padding: 0; }
    .di-roadmap-section, .di-roadmap-final { break-inside: avoid; border-color: #999; background: none; }
    .di-roadmap-section details { display: block; }
    .di-roadmap-section details > *:not(summary) { display: block; }
    body { background: #fff; color: #000; }
}

/* ---- Sales page ---- */
.di-offer { margin: 0 0 44px; }
.di-offer-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr); gap: 24px; align-items: start; }
@media (max-width: 760px) { .di-offer-grid { grid-template-columns: 1fr; } }
.di-offer-points { margin: 0; padding: 0; list-style: none; }
.di-offer-points li { padding: 12px 0; border-top: 1px solid var(--border-subtle); line-height: 1.6; color: var(--text-secondary); }
.di-offer-points li:first-child { border-top: 0; padding-top: 0; }
.di-offer-points strong { color: var(--text-primary); font-weight: var(--fw-medium); }
.di-offer-points a { color: var(--text-accent); }
.di-offer-card { padding: 22px 24px; border: 1px solid var(--border-default); border-left: 3px solid var(--accent); border-radius: var(--radius-lg); background: color-mix(in srgb, var(--surface-1) 94%, transparent); position: sticky; top: 88px; }
.di-price { margin: 0 0 6px; font-size: clamp(26px, 3.4vw, 34px); letter-spacing: -0.02em; color: var(--text-primary); line-height: 1.2; }
.di-price-note, .di-price-sub, .di-price-fine { color: var(--text-tertiary); font-size: var(--text-body-sm); line-height: 1.5; }
.di-price-note { display: block; font-size: var(--text-body-sm); margin-top: 4px; letter-spacing: 0; }
.di-price-sub { margin: 0 0 14px; }
.di-price-fine { margin: 12px 0 0; }
.di-price-fine a { color: var(--text-accent); }
.di-price-soon { font-size: clamp(22px, 3vw, 26px); }
.di-buy-btn { width: 100%; }
.di-checkout-error { color: var(--danger-bright); font-size: var(--text-body-sm); margin: 0 0 10px; }
.di-offer-card .subscribe-form { margin: 0; }
.di-sample, .di-why, .di-disclose { margin: 0 0 44px; }
.di-sample-day { margin: 18px 0 0; padding: 26px 28px; border: 1px solid var(--border-default); border-radius: var(--radius-lg); background: color-mix(in srgb, var(--surface-1) 94%, transparent); }
.di-sample-title { margin: 10px 0 8px; font-size: clamp(24px, 3.4vw, 32px); letter-spacing: -0.03em; line-height: 1.1; }
.di-sample-kicker { margin: 0 0 18px; color: var(--text-secondary); font-size: 17px; line-height: 1.55; }
.di-sample-question h4 { margin: 0 0 8px; font-size: 18px; }
.di-why-sig { color: var(--text-tertiary); font-size: var(--text-body-sm); }
.di-disclosures { margin: 0; display: grid; grid-template-columns: 180px 1fr; gap: 14px 22px; }
@media (max-width: 640px) { .di-disclosures { grid-template-columns: 1fr; gap: 4px 0; } .di-disclosures dd { margin-bottom: 14px; } }
.di-disclosures dt { font: var(--fw-medium) 11px/1.6 var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-accent); padding-top: 3px; }
.di-disclosures dd { margin: 0; color: var(--text-secondary); line-height: 1.6; }
.di-disclosures dd a { color: var(--text-accent); }