/* ==========================================================================
   PortIgniter LMS - design system layer over Bootstrap 5.3

   Theme = the `data-bs-theme` attribute on <html> ("dark" | "light").
   Dark values come straight from DESIGN.md (public/css/site.css on the
   marketing site). Light does not exist upstream, so its values are new:
   same brand oranges, darkened where needed to keep WCAG AA (4.5:1) text
   contrast on warm-white surfaces.

   Rule: components only ever use var(--token); hex values live in the two
   theme blocks below and nowhere else.
   ========================================================================== */

/* ---- Fonts (vendored, no CDN: SEC-02) ----------------------------------- */
@font-face { font-family: "Poppins"; font-style: normal; font-weight: 300; font-display: swap; src: url("../fonts/poppins/poppins-latin-300-normal.woff2") format("woff2"); }
@font-face { font-family: "Poppins"; font-style: normal; font-weight: 400; font-display: swap; src: url("../fonts/poppins/poppins-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Poppins"; font-style: italic; font-weight: 400; font-display: swap; src: url("../fonts/poppins/poppins-latin-400-italic.woff2") format("woff2"); }
@font-face { font-family: "Poppins"; font-style: normal; font-weight: 500; font-display: swap; src: url("../fonts/poppins/poppins-latin-500-normal.woff2") format("woff2"); }
@font-face { font-family: "Poppins"; font-style: normal; font-weight: 600; font-display: swap; src: url("../fonts/poppins/poppins-latin-600-normal.woff2") format("woff2"); }
@font-face { font-family: "Poppins"; font-style: normal; font-weight: 700; font-display: swap; src: url("../fonts/poppins/poppins-latin-700-normal.woff2") format("woff2"); }

/* ---- Tokens: dark (DESIGN.md) - also the no-JS default ------------------- */
:root,
[data-bs-theme="dark"] {
    --header-primary: #e19d65;
    --orange-primary: #f9a06d;
    --orange-hover: #ffae68;
    --dark-bg: #0d1117;
    --dark-secondary: #161b22;
    --dark-tertiary: #21262d;
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --text-muted: #b0b0b0;
    --coral-primary: #ec6f66;
    --coral-secondary: #f3a183;
    --coral-gradient: linear-gradient(to left, var(--coral-primary), var(--coral-secondary));
    --firefly-primary: #78ffd6;
    --firefly-secondary: #a8ff78;
    --firefly-gradient: linear-gradient(to left, var(--firefly-primary), var(--firefly-secondary));

    /* Semantic tokens the components actually read */
    --accent-contrast: var(--dark-bg);              /* text on a filled accent */
    --line: rgba(240, 246, 252, 0.10);              /* hairline borders */
    --line-strong: rgba(240, 246, 252, 0.20);
    --shadow: 0 3px 5px #010409;
    --danger: tomato;
    --info: #70e4ff;
    --success: var(--firefly-primary);
    --warning: var(--orange-hover);
    --code-bg: #000;
    --hero-glow: radial-gradient(60em 24em at 15% -10%, rgba(249, 160, 109, 0.14), transparent 60%);
    --selection: rgba(255, 138, 94, 0.83);
    color-scheme: dark;
}

/* ---- Tokens: light (new) -------------------------------------------------- */
[data-bs-theme="light"] {
    --header-primary: #a8531a;
    --orange-primary: #b84e08;
    --orange-hover: #9a4006;
    --dark-bg: #faf7f4;              /* page background */
    --dark-secondary: #ffffff;       /* cards, footer */
    --dark-tertiary: #f0ebe5;        /* badges, alternate sections */
    --text-primary: #1f2328;
    --text-secondary: #57606a;
    --text-muted: #656d76;
    --coral-primary: #c4453c;
    --coral-secondary: #d9714f;
    --firefly-primary: #157a5c;
    --firefly-secondary: #3d8a1c;

    --accent-contrast: #ffffff;
    --line: rgba(31, 35, 40, 0.12);
    --line-strong: rgba(31, 35, 40, 0.26);
    --shadow: 0 2px 6px rgba(31, 35, 40, 0.12);
    --danger: #b3261e;
    --info: #0a6a8c;
    --success: #157a5c;
    --warning: #9a4006;
    --code-bg: #f0ebe5;
    --hero-glow: radial-gradient(60em 24em at 15% -10%, rgba(184, 78, 8, 0.10), transparent 60%);
    --selection: rgba(184, 78, 8, 0.28);
    color-scheme: light;
}

/* ---- Bootstrap variable bridge ------------------------------------------- */
:root,
[data-bs-theme] {
    --bs-body-font-family: "Poppins", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --bs-body-font-weight: 400;
    --bs-body-line-height: 1.6;
    --bs-body-bg: var(--dark-bg);
    --bs-body-color: var(--text-primary);
    --bs-secondary-color: var(--text-secondary);
    --bs-secondary-bg: var(--dark-tertiary);
    --bs-tertiary-bg: var(--dark-secondary);
    --bs-emphasis-color: var(--text-primary);
    --bs-heading-color: var(--text-primary);
    --bs-border-color: var(--line);
    --bs-link-color: var(--orange-primary);
    --bs-link-hover-color: var(--orange-hover);
    --bs-code-color: var(--text-muted);
    --bs-primary: var(--orange-primary);
    --bs-danger: var(--danger);
    --bs-focus-ring-color: color-mix(in srgb, var(--orange-hover) 45%, transparent);
    --bs-border-radius: 0.5rem;
    --bs-card-bg: var(--dark-secondary);
}

/* ---- Base ------------------------------------------------------------------ */
::selection { background: var(--selection); color: var(--text-primary); text-shadow: none; }

body { background-color: var(--dark-bg); color: var(--text-primary); }
h1, h2, h3, h4, h5, h6 { font-weight: 700; color: var(--text-primary); }
a { color: var(--orange-primary); text-decoration: none; transition: all ease 0.3s; }
a:hover { color: var(--orange-hover); }
.text-secondary, .text-body-secondary { color: var(--text-secondary) !important; }
.text-muted { color: var(--text-muted) !important; }
hr { border-color: var(--line-strong); opacity: 1; }

/* Visible focus on everything interactive (WCAG 2.2 AA) */
:focus-visible { outline: 3px solid var(--orange-hover); outline-offset: 2px; border-radius: 4px; }
main:focus { outline: none; }

.skip-link {
    position: absolute; left: 1rem; top: -4rem; z-index: 2000;
    background: var(--orange-primary); color: var(--accent-contrast);
    padding: 0.5rem 1rem; border-radius: 0.5rem; font-weight: 600;
}
.skip-link:focus { top: 1rem; color: var(--accent-contrast); }

code:not(pre code) { background: var(--code-bg); color: var(--text-muted); padding: 0 0.3em; border-radius: 3px; }

/* ---- Gradient text utilities (DESIGN.md) ---------------------------------- */
.grad-header, .grad {
    background-clip: text; -webkit-background-clip: text;
    color: transparent; -webkit-text-fill-color: transparent;
}
.grad-header { background-image: linear-gradient(to right, var(--header-primary), var(--orange-hover)); }
.grad        { background-image: linear-gradient(to right, var(--orange-hover), var(--orange-primary)); }

/* ---- Layout primitives ----------------------------------------------------- */
.section { padding: 3em 0; }
.top-hero { padding: 5em 0 1.5em; background: var(--hero-glow); }
.hero-image { max-height: 16rem; width: auto; object-fit: contain; }
.section-dark-secondary { background: var(--dark-secondary); }
.section-dark-tertiary  { background: var(--dark-tertiary); }
.section-divider { height: 3px; border: 0; background: linear-gradient(to right, transparent, var(--orange-primary), transparent); opacity: 1; margin: 2em 0; }

.box { padding: 1em; border-radius: 0.5em; }
.box-dark { background: var(--dark-bg); }
.box-dark-secondary { background: var(--dark-secondary); }
.box-dark-tertiary { background: var(--dark-tertiary); }

/* ---- Header / navigation --------------------------------------------------- */
.app-header {
    background: color-mix(in srgb, var(--dark-secondary) 92%, transparent);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--line);
    position: sticky; top: 0; z-index: 1030;
}
.app-header .navbar-brand { display: inline-flex; align-items: center; gap: 0.6rem; font-weight: 700; color: var(--text-primary); }
.app-header .navbar-brand img { height: 2.5rem; width: 2.5rem; object-fit: contain; }
.app-header .nav-link { color: var(--text-secondary); font-weight: 500; padding: 0.5rem 0.9rem; border-radius: 0.5rem; }
.app-header .nav-link:hover { color: var(--orange-hover); }
.app-header .nav-link.active { color: var(--header-primary); background: var(--dark-tertiary); }
.app-header .navbar-toggler { border-color: var(--line-strong); color: var(--text-primary); }
.app-header .navbar-toggler-icon { background-image: none; display: inline-flex; align-items: center; justify-content: center; }
.app-header .navbar-toggler-icon::before { content: "\f479"; font-family: bootstrap-icons; font-size: 1.5rem; line-height: 1; }
.app-header .dropdown-menu {
    background: var(--dark-secondary); border: 1px solid var(--line-strong); box-shadow: var(--shadow);
    --bs-dropdown-link-color: var(--text-primary);
    --bs-dropdown-link-hover-bg: var(--dark-tertiary);
    --bs-dropdown-link-hover-color: var(--orange-hover);
    --bs-dropdown-divider-bg: var(--line);
}

.theme-toggle {
    display: inline-flex; align-items: center; justify-content: center;
    width: 2.5rem; height: 2.5rem; border-radius: 50%;
    background: transparent; color: var(--text-primary); border: 1px solid var(--line-strong);
    transition: all ease 0.3s; cursor: pointer;
}
.theme-toggle:hover { color: var(--orange-hover); border-color: var(--orange-hover); }
/* Show the icon for the theme you would switch TO */
[data-bs-theme="dark"]  .theme-toggle .bi-moon-stars-fill { display: none; }
[data-bs-theme="light"] .theme-toggle .bi-sun-fill { display: none; }

/* ---- Buttons ---------------------------------------------------------------- */
/* Outlined brand button (DESIGN.md `.button`) */
.button, .btn-outline-brand {
    display: inline-flex; align-items: center; gap: 0.5rem; justify-content: center;
    background: transparent; color: var(--header-primary); font-weight: 700;
    border: 3px solid var(--header-primary); border-radius: 10px; padding: 0.45rem 1.2rem;
    transition: all ease 0.3s; cursor: pointer;
}
.button:hover, .btn-outline-brand:hover { color: var(--orange-primary); border-color: var(--orange-primary); border-radius: 5px; }

/* Filled primary CTA: one per view (UX-08) */
.btn-primary {
    --bs-btn-bg: var(--orange-primary); --bs-btn-border-color: var(--orange-primary); --bs-btn-color: var(--accent-contrast);
    --bs-btn-hover-bg: var(--orange-hover); --bs-btn-hover-border-color: var(--orange-hover); --bs-btn-hover-color: var(--accent-contrast);
    --bs-btn-active-bg: var(--orange-hover); --bs-btn-active-border-color: var(--orange-hover); --bs-btn-active-color: var(--accent-contrast);
    --bs-btn-disabled-bg: var(--dark-tertiary); --bs-btn-disabled-border-color: var(--line-strong); --bs-btn-disabled-color: var(--text-muted);
    font-weight: 600; transition: all ease 0.3s;
}
.btn-outline-secondary {
    --bs-btn-color: var(--text-primary); --bs-btn-border-color: var(--line-strong);
    --bs-btn-hover-bg: var(--dark-tertiary); --bs-btn-hover-color: var(--orange-hover); --bs-btn-hover-border-color: var(--orange-hover);
    --bs-btn-active-bg: var(--dark-tertiary); --bs-btn-active-color: var(--orange-hover); --bs-btn-active-border-color: var(--orange-hover);
}
.btn-lg { padding: 0.7rem 1.6rem; }

/* ---- Cards ------------------------------------------------------------------ */
.icon-card {
    background: var(--dark-secondary); border-radius: 0.5em; padding: 1.5rem; height: 100%;
    border: 1px solid var(--line); border-bottom: 3px solid var(--line); transition: all ease 0.3s;
}
.section-dark-secondary .icon-card { background: var(--dark-bg); }
.icon-card:hover { border-bottom-color: var(--orange-primary); }
.icon-card .bi { font-size: 2em; color: var(--header-primary); display: block; margin-bottom: 0.5rem; }
.icon-card h3 { font-size: 1.15rem; }
.icon-card p { margin: 0; color: var(--text-secondary); }

.stat-card {
    background: var(--dark-secondary); border-top: 3px solid var(--orange-primary);
    border-radius: 0.5em; padding: 1.25rem; text-align: center; height: 100%;
    border-left: 1px solid var(--line); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.stat-number { font-size: 2.5em; font-weight: 700; color: var(--header-primary); line-height: 1.1; }
.stat-label { color: var(--text-secondary); font-size: 0.875rem; }

/* position: relative is REQUIRED: Bootstrap's .stretched-link stretches its ::after over the nearest
   positioned ancestor. Without it the link covers the whole page (phantom hover, stolen clicks). */
/* Sits above the card's stretched link so it stays clickable. */
.course-card__action { position: relative; z-index: 2; }

.course-card {
    position: relative;
    display: flex; flex-direction: column; height: 100%; overflow: hidden;
    background: var(--dark-secondary); border: 1px solid var(--line); border-bottom: 3px solid var(--line);
    border-radius: 0.75rem; color: var(--text-primary); transition: all ease 0.3s;
}
.course-card:hover { border-bottom-color: var(--orange-primary); transform: translateY(-2px); box-shadow: var(--shadow); color: var(--text-primary); }
.course-card__cover {
    aspect-ratio: 16 / 7; display: grid; place-items: center; overflow: hidden;
    background: linear-gradient(135deg, var(--dark-tertiary), var(--dark-bg));
    color: var(--header-primary); font-size: 2.75rem; border-bottom: 1px solid var(--line);
}
.course-card__cover img { width: 100%; height: 100%; object-fit: cover; }
.course-card__body { padding: 1.1rem 1.25rem; display: flex; flex-direction: column; gap: 0.5rem; flex: 1; }
.course-card__title { font-size: 1.15rem; margin: 0; }
.course-card__summary { color: var(--text-secondary); font-size: 0.925rem; margin: 0; flex: 1; }
.course-card__meta { display: flex; flex-wrap: wrap; gap: 0.4rem; align-items: center; }
.course-card__price { margin-left: auto; font-weight: 700; color: var(--header-primary); }
/* Stretched link: the whole card is one target, the title is the accessible name */
.course-card .stretched-link { color: inherit; }
.course-card .stretched-link:hover { color: var(--orange-hover); }

/* ---- Tags / badges ------------------------------------------------------------ */
.tech-badge {
    display: inline-flex; align-items: center; gap: 0.35rem; font-size: 0.8rem;
    padding: 0.15rem 0.7rem; border-radius: 2em; color: var(--text-secondary);
    background: var(--dark-tertiary); border: 1px solid var(--line-strong);
}
.service-tag {
    display: inline-flex; align-items: center; gap: 0.35rem; font-size: 0.8rem; font-weight: 500;
    padding: 0.15rem 0.7rem; border-radius: 2em; color: var(--orange-hover);
    background: color-mix(in srgb, var(--orange-primary) 12%, transparent);
    border: 1px solid color-mix(in srgb, var(--orange-primary) 40%, transparent);
    transition: all ease 0.3s;
}
a.service-tag:hover, .service-tag.is-active { background: var(--orange-primary); color: var(--accent-contrast); }

/* ---- Callouts / alerts ---------------------------------------------------------- */
.alert { border-radius: 0.5rem; }
.alert-info    { color: var(--info);   background: transparent; border: 1px solid var(--info); }
.alert-danger  { color: var(--danger); background: transparent; border: 1px solid var(--danger); }
.alert-success { color: var(--success); background: transparent; border: 1px solid var(--success); }
.alert-warning { color: var(--warning); background: transparent; border: 1px solid var(--warning); }
.alert .btn-close { filter: none; }
[data-bs-theme="dark"] .alert .btn-close { filter: invert(1) grayscale(1); }

/* GitHub-style alert blocks for lesson content (CNT-04): NOTE / TIP / IMPORTANT / WARNING / CAUTION */
.callout {
    --callout: var(--info);
    padding: 1rem 1.25rem; border-radius: 0.75rem; margin: 1.25rem 0;
    background: color-mix(in srgb, var(--callout) 12%, var(--dark-secondary));
    border-left: 4px solid var(--callout); box-shadow: var(--shadow);
}
.callout__title { display: flex; align-items: center; gap: 0.5rem; font-weight: 700; color: var(--callout); margin-bottom: 0.25rem; }
.callout > :last-child { margin-bottom: 0; }
.callout-note { --callout: var(--info); }
.callout-tip { --callout: var(--success); }
.callout-important { --callout: var(--header-primary); }
.callout-warning { --callout: var(--warning); }
.callout-caution { --callout: var(--danger); }

/* ---- Forms ---------------------------------------------------------------------- */
.form-control, .form-select {
    background-color: var(--dark-bg); color: var(--text-primary);
    border: 1px solid var(--line-strong); border-radius: 0.5rem; padding: 0.6rem 0.9rem;
    transition: all ease 0.3s;
}
.form-control::placeholder { color: var(--text-muted); opacity: 1; }
.form-control:focus, .form-select:focus {
    background-color: var(--dark-bg); color: var(--text-primary);
    border-color: var(--orange-hover); box-shadow: 0 0 0 0.2rem color-mix(in srgb, var(--orange-hover) 30%, transparent);
}
.form-label { font-weight: 500; }
.form-text { color: var(--text-secondary); }
.form-control.is-invalid, .invalid-field { border-color: var(--danger); background-image: none; }
.invalid-feedback { color: var(--danger); }
.form-check-input:checked { background-color: var(--orange-primary); border-color: var(--orange-primary); }
.input-group-text { background: var(--dark-tertiary); color: var(--text-secondary); border: 1px solid var(--line-strong); }

.auth-card {
    max-width: 30rem; margin: 3rem auto; padding: 2rem;
    background: var(--dark-secondary); border: 1px solid var(--line); border-top: 3px solid var(--orange-primary);
    border-radius: 0.75rem; box-shadow: var(--shadow);
}
.divider-text { display: flex; align-items: center; gap: 1rem; color: var(--text-secondary); font-size: 0.85rem; margin: 1.25rem 0; }
.divider-text::before, .divider-text::after { content: ""; flex: 1; height: 1px; background: var(--line-strong); }

/* ---- Progress --------------------------------------------------------------------- */
progress.lms-progress {
    -webkit-appearance: none; appearance: none; display: block; width: 100%; height: 0.5rem;
    border: 0; border-radius: 1rem; overflow: hidden; background: var(--dark-tertiary); color: var(--orange-primary);
}
progress.lms-progress::-webkit-progress-bar { background: var(--dark-tertiary); border-radius: 1rem; }
progress.lms-progress::-webkit-progress-value { background: linear-gradient(to right, var(--header-primary), var(--orange-hover)); border-radius: 1rem; transition: width 0.4s ease; }
progress.lms-progress::-moz-progress-bar { background: linear-gradient(to right, var(--header-primary), var(--orange-hover)); border-radius: 1rem; }

/* ---- Learner: continue banner, syllabus, player ---------------------------------- */
.continue-card {
    display: grid; grid-template-columns: 1fr auto; gap: 1rem; align-items: center;
    padding: 1.5rem; border-radius: 0.75rem; border: 1px solid var(--line);
    border-left: 4px solid var(--orange-primary); background: var(--dark-secondary); box-shadow: var(--shadow);
}
@media (max-width: 575.98px) { .continue-card { grid-template-columns: 1fr; } }
.continue-card__eyebrow { color: var(--text-secondary); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; }

.syllabus .accordion-item { background: var(--dark-secondary); border: 1px solid var(--line); }
.syllabus .accordion-button { background: var(--dark-secondary); color: var(--text-primary); font-weight: 600; box-shadow: none; }
.syllabus .accordion-button:not(.collapsed) { color: var(--header-primary); background: var(--dark-tertiary); }
.syllabus .accordion-button::after { filter: none; }
[data-bs-theme="dark"] .syllabus .accordion-button::after { filter: invert(1) grayscale(1) brightness(1.4); }
.syllabus-item { display: flex; gap: 0.75rem; align-items: center; padding: 0.7rem 1rem; border-top: 1px solid var(--line); color: var(--text-primary); }
.syllabus-item:first-child { border-top: 0; }
a.syllabus-item:hover { background: var(--dark-tertiary); color: var(--orange-hover); }
.syllabus-item__state { font-size: 1.1rem; color: var(--text-muted); flex: none; }
.syllabus-item.is-complete .syllabus-item__state { color: var(--success); }
.syllabus-item.is-progress .syllabus-item__state { color: var(--orange-hover); }
.syllabus-item__type { margin-left: auto; color: var(--text-secondary); font-size: 0.8rem; white-space: nowrap; }

.player { display: grid; grid-template-columns: 20rem minmax(0, 1fr); gap: 2rem; align-items: start; }
.player__outline { position: sticky; top: 5.5rem; max-height: calc(100vh - 7rem); overflow: auto; }
@media (max-width: 991.98px) { .player { grid-template-columns: 1fr; } .player__outline { display: none; } }
.offcanvas { background: var(--dark-secondary); color: var(--text-primary); }
.offcanvas .btn-close { filter: none; }
[data-bs-theme="dark"] .offcanvas .btn-close { filter: invert(1) grayscale(1); }
.prose { font-size: 1.0625rem; line-height: 1.75; max-width: 46rem; }
.prose h2 { margin-top: 2rem; }
.prose p { margin-bottom: 1.1rem; }

/* ---- Tables in lesson content: orange header, teal first column, zebra rows; every color derives from the theme tokens ---- */
/* Text keeps its reading width; tables may use the whole content column so wide ones need less sideways scrolling. */
.prose:has(> .table-wrap) { max-width: none; }
.prose:has(> .table-wrap) > :not(.table-wrap) { max-width: 46rem; }
.table-wrap { margin: 1.5rem 0; overflow-x: auto; border: 1px solid var(--line-strong); border-radius: 0.6rem; background: var(--dark-secondary); box-shadow: var(--shadow); }
.table-wrap table { width: 100%; margin: 0; border-collapse: collapse; font-size: 0.95rem; line-height: 1.55; }
.table-wrap th, .table-wrap td { padding: 0.65rem 1rem; vertical-align: top; text-align: left; border: 0; border-top: 1px solid var(--line); }
.table-wrap thead th { border-top: 0; border-bottom: 2px solid var(--orange-primary); background: color-mix(in srgb, var(--orange-primary) 20%, var(--dark-secondary)); color: var(--orange-hover); font-weight: 600; letter-spacing: 0.02em; white-space: nowrap; }
.table-wrap tbody tr:nth-child(even) td { background-color: color-mix(in srgb, var(--text-primary) 4%, transparent); }
.table-wrap tbody tr:hover td { background-color: color-mix(in srgb, var(--orange-primary) 11%, transparent); }
.table-wrap tbody td:first-child { font-weight: 500; color: var(--text-primary); --tbl-lead: color-mix(in srgb, var(--firefly-primary) 6%, var(--dark-bg)); background-image: linear-gradient(var(--tbl-lead), var(--tbl-lead)); border-right: 1px solid var(--line); }
.table-wrap tbody tr:hover td:first-child { --tbl-lead: color-mix(in srgb, var(--firefly-primary) 13%, var(--dark-bg)); }
.table-wrap td code, .table-wrap th code { padding: 0.05em 0.35em; background: color-mix(in srgb, var(--dark-bg) 70%, transparent); color: inherit; font-size: 0.9em; }
.table-wrap tbody td:first-child code { color: var(--firefly-primary); }
.player__nav { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--line); }

/* ---- Code blocks with copy button (CNT-03) ---------------------------------------- */
.code-block { margin: 1.25rem 0; border: 1px solid var(--line-strong); border-radius: 0.6rem; overflow: hidden; background: var(--code-bg); }
.code-block__bar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.35rem 0.5rem 0.35rem 1rem; background: var(--dark-tertiary); border-bottom: 1px solid var(--line); font-size: 0.8rem; color: var(--text-secondary); }
.code-block pre { margin: 0; padding: 1rem; overflow-x: auto; color: var(--text-primary); font-size: 0.9rem; }
.code-block .prompt { color: var(--text-muted); user-select: none; }
.code-copy { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.25rem 0.7rem; border-radius: 0.4rem; background: transparent; color: var(--text-primary); border: 1px solid var(--line-strong); font-size: 0.8rem; transition: all ease 0.3s; }
.code-copy:hover { color: var(--orange-hover); border-color: var(--orange-hover); }
.code-copy.is-copied { color: var(--success); border-color: var(--success); }

/* ---- Empty states (UX-03: one primary action) ----------------------------------- */
.empty-state { text-align: center; padding: 3rem 1.5rem; border: 2px dashed var(--line-strong); border-radius: 0.75rem; background: var(--dark-secondary); }
.empty-state .bi { font-size: 2.5rem; color: var(--header-primary); }
.empty-state p { color: var(--text-secondary); max-width: 34rem; margin: 0.5rem auto 1.25rem; }

/* ---- Footer --------------------------------------------------------------------------- */
.app-footer { background: var(--dark-secondary); border-top: 1px solid var(--line); color: var(--text-secondary); margin-top: auto; }
.app-footer a { color: var(--text-secondary); }
.app-footer a:hover { color: var(--orange-hover); }
.app-footer h2 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--header-primary); }

/* ---- Style guide swatches ---------------------------------------------------------------- */
.swatch { border-radius: 0.5rem; border: 1px solid var(--line-strong); overflow: hidden; background: var(--dark-secondary); }
.swatch__chip { height: 3.5rem; border-bottom: 1px solid var(--line); }
.swatch__meta { padding: 0.5rem 0.75rem; font-size: 0.8rem; line-height: 1.3; }
.swatch__meta code { display: block; padding: 0; background: none; color: var(--text-secondary); }

/* ---- Motion (DESIGN.md) ------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

/* ---- Print: lessons and labs (LRN-05) -------------------------------------------------------- */
@media print {
    .app-header, .app-footer, .player__outline, .player__nav, .theme-toggle, .code-copy, .skip-link { display: none !important; }
    body { background: #fff !important; color: #000 !important; }
    .player { display: block; }
    .code-block, .callout { break-inside: avoid; box-shadow: none; }
    .table-wrap { overflow: visible; box-shadow: none; border-color: #999; break-inside: avoid; }
    .table-wrap th, .table-wrap td { background: #fff !important; color: #000 !important; border-color: #bbb !important; }
    .table-wrap thead th { background: #eee !important; }
}

/* ---- Small view helpers (kept as classes so the CSP can forbid inline styles) ---- */
.lead-narrow { max-width: 46rem; }
.filter-box { min-width: 16rem; }
.text-ok { color: var(--success); }
.price-lg { color: var(--header-primary); }
.enroll-card {
    position: sticky; top: 5.5rem; padding: 1.5rem;
    background: var(--dark-secondary); border: 1px solid var(--line); border-top: 3px solid var(--orange-primary);
    border-radius: 0.5rem; box-shadow: var(--shadow);
}
@media (max-width: 991.98px) { .enroll-card { position: static; } }

/* Style guide swatch chips: one rule per token (no inline styles) */
.swatch__chip[data-token="dark-bg"] { background: var(--dark-bg); }
.swatch__chip[data-token="dark-secondary"] { background: var(--dark-secondary); }
.swatch__chip[data-token="dark-tertiary"] { background: var(--dark-tertiary); }
.swatch__chip[data-token="header-primary"] { background: var(--header-primary); }
.swatch__chip[data-token="orange-primary"] { background: var(--orange-primary); }
.swatch__chip[data-token="orange-hover"] { background: var(--orange-hover); }
.swatch__chip[data-token="text-primary"] { background: var(--text-primary); }
.swatch__chip[data-token="text-secondary"] { background: var(--text-secondary); }
.swatch__chip[data-token="text-muted"] { background: var(--text-muted); }
.swatch__chip[data-token="danger"] { background: var(--danger); }
.swatch__chip[data-token="info"] { background: var(--info); }
.swatch__chip[data-token="success"] { background: var(--success); }

/* Keep brand + controls on one row at phone width */
@media (max-width: 575.98px) {
    .app-header .container { flex-wrap: nowrap; }
    .app-header .navbar-brand { font-size: 1rem; margin-right: 0.5rem; min-width: 0; }
    .app-header .navbar-brand img { height: 2rem; width: 2rem; }
}

/* ---- Branding / admin settings ---- */
.app-header .brand-name { min-width: 0; max-width: 16rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.settings-page { max-width: 56rem; }
.logo-preview--empty { width: 96px; height: 96px; flex: none; }
.logo-preview { object-fit: contain; border: 1px dashed var(--line-strong); border-radius: 0.75rem; padding: 0.5rem; background: var(--dark-bg); }
.filter-narrow { max-width: 24rem; }

/* ---- Lesson content rendered from blocks ---- */
.lesson-block { margin: 0 0 1.5rem; }
.lesson-block:last-child { margin-bottom: 0; }
.lesson-figure { margin: 0; }
.lesson-video { margin: 0; }
.code-line { display: block; padding: 0 0.5rem; margin: 0 -0.5rem; }
.code-line.hl { background: color-mix(in srgb, var(--orange-primary) 18%, transparent); box-shadow: inset 3px 0 0 var(--orange-primary); }
.download-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.5rem; }
.download-item { display: flex; gap: 0.75rem; align-items: flex-start; padding: 0.75rem 1rem; border: 1px solid var(--line); border-radius: 0.5rem; background: var(--dark-secondary); }
.download-item .bi { font-size: 1.4rem; color: var(--header-primary); }
.link-card { display: flex; gap: 0.75rem; align-items: center; padding: 1rem; border: 1px solid var(--line-strong); border-radius: 0.5rem; background: var(--dark-secondary); color: var(--text-primary); }
.link-card:hover { border-color: var(--orange-hover); color: var(--text-primary); }
.link-card .bi { font-size: 1.4rem; color: var(--header-primary); }
.syllabus-item.is-locked { color: var(--text-muted); cursor: not-allowed; }
.syllabus-item.is-locked .syllabus-item__state { color: var(--text-muted); }
.lock-reason { display: block; font-size: 0.8rem; color: var(--text-secondary); }