/* =============================================
   COURSE / GUIDE PAGE
   ============================================= */

/* ── Breadcrumb ───────────────────────────── */

.course-breadcrumb {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    border-top: 72px solid var(--color-navy);
    padding: var(--space-3) 0;
}

.course-breadcrumb__inner {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.82rem;
    color: var(--color-muted);
}

.course-breadcrumb__link {
    color: var(--color-accent);
    font-weight: 500;
    transition: color var(--transition);
}

.course-breadcrumb__link:hover { color: var(--color-accent-dark); }

.course-breadcrumb__sep {
    color: var(--color-muted);
    font-size: 0.7rem;
}

.course-breadcrumb__current { color: var(--color-ink); font-weight: 600; }

/* ── Course header ────────────────────────── */

.course-header {
    background: var(--color-navy);
    color: var(--color-white);
    padding: 5rem 0 5rem;
    position: relative;
}

.course-header__label {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.45);
    margin-bottom: var(--space-3);
}

.course-header h1 {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 800;
    margin-bottom: var(--space-4);
    line-height: var(--space-12);
    max-width: 700px;
    text-shadow: 4px 4px 4px rgba(0, 0, 0, 0.5);
}

.course-header__meta {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-wrap: wrap;
}

.course-meta-pill {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.82rem;
    color: rgba(255,255,255,0.7);
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    padding: 4px 12px;
    border-radius: 999px;
}

/* ── Body layout ──────────────────────────── */

.course-body {
    padding-block: var(--space-12);
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: var(--space-10);
    align-items: start;
}

@media (max-width: 960px) {
    .course-body { grid-template-columns: 1fr; }
}

.course-body--video-only {
    grid-template-columns: 1fr;
}

/* ── Video ────────────────────────────────── */

.course-video-wrap { position: sticky; top: 90px; }
.course-body--video-only .course-video-wrap { position: static; }

.course-video {
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: var(--radius-lg);
    background: #0b1526;
    display: block;
}

.course-video--placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
    color: rgba(255,255,255,0.35);
    border: 1.5px dashed rgba(255,255,255,0.12);
}

.course-video--placeholder svg { opacity: 0.4; }
.course-video--placeholder p { font-size: 0.9rem; margin: 0; }

.course-video-caption {
    margin-top: var(--space-3);
    font-size: 0.82rem;
    color: var(--color-muted);
    line-height: 1.5;
}

/* ── Written guide ────────────────────────── */

.course-written { }

.course-written__heading {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-ink);
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-3);
    border-bottom: 2px solid var(--color-accent);
    display: inline-block;
}

.course-steps {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.course-step {
    display: flex;
    gap: var(--space-4);
}

.course-step__num {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--color-accent);
    color: var(--color-white);
    font-size: 0.78rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 2px;
}

.course-step__body { flex: 1; }

.course-step__title {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-ink);
    margin-bottom: var(--space-1);
}

.course-step__desc {
    font-size: 0.85rem;
    color: var(--color-muted);
    line-height: 1.6;
}

.course-step__tip {
    margin-top: var(--space-2);
    background: var(--color-accent-glow);
    border-left: 3px solid var(--color-accent);
    padding: var(--space-2) var(--space-3);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-size: 0.8rem;
    color: var(--color-accent-dark);
}

/* ── Login gate ───────────────────────────── */

.course-gate {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--space-16) var(--space-6);
    max-width: 480px;
    margin-inline: auto;
}

.course-gate__icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-4);
    opacity: 0.5;
}

.course-gate__heading {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-ink);
    margin-bottom: var(--space-3);
}

.course-gate__desc {
    font-size: 0.9rem;
    color: var(--color-muted);
    line-height: 1.6;
    margin-bottom: var(--space-2);
}

.course-gate__btn {
    margin-top: var(--space-5);
}

/* ── Feedback widget ──────────────────────── */

.course-feedback {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding-block: var(--space-8);
}

.course-feedback__inner {
    max-width: 560px;
}

.course-feedback__question {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-ink);
    margin-bottom: var(--space-4);
}

.course-feedback__btns {
    display: flex;
    gap: var(--space-3);
}

.course-feedback__btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    border: 1.5px solid var(--color-border);
    background: var(--color-white);
    color: var(--color-ink);
    transition: border-color var(--transition), background var(--transition), color var(--transition);
    font-family: var(--font-sans);
}

.course-feedback__btn--yes:hover {
    border-color: #22c55e;
    background: #f0fdf4;
    color: #15803d;
}

.course-feedback__btn--no:hover {
    border-color: #ef4444;
    background: #fef2f2;
    color: #b91c1c;
}

.course-feedback__comment {
    display: none;
    margin-top: var(--space-4);
}

.course-feedback__label {
    display: block;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--color-ink);
    margin-bottom: var(--space-2);
}

.course-feedback__textarea {
    width: 100%;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    font-family: var(--font-sans);
    font-size: 0.875rem;
    color: var(--color-ink);
    resize: vertical;
    transition: border-color var(--transition);
    box-sizing: border-box;
}

.course-feedback__textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.course-feedback__comment-actions {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-3);
}

.course-feedback__thanks {
    display: none;
    font-size: 0.9rem;
    font-weight: 600;
    color: #15803d;
    margin-top: var(--space-4);
}

/* ── Downloads ────────────────────────────── */

.course-downloads {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding-block: var(--space-6);
}

.course-downloads__label {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: var(--space-3);
}

.course-downloads__list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.course-download-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 0.55rem 1.1rem;
    border-radius: var(--radius-md);
    border: 1.5px solid var(--color-accent);
    background: transparent;
    color: var(--color-accent);
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    transition: background var(--transition), color var(--transition);
}

.course-download-btn:hover {
    background: var(--color-accent);
    color: var(--color-white);
}

/* ── Send guide popover ─────────────────────────────────────────────────────── */
.course-send-popover {
    position: absolute;
    top: var(--space-5);
    right: var(--space-6);
}

.course-send-popover__btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 1rem;
    border-radius: var(--radius-md);
    border: 1.5px solid rgba(255,255,255,0.25);
    background: rgba(255,255,255,0.08);
    color: rgba(255,255,255,0.75);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition), color var(--transition);
    white-space: nowrap;
}

.course-send-popover__btn:hover,
.course-send-popover__btn[aria-expanded="true"] {
    background: rgba(255,255,255,0.15);
    border-color: rgba(255,255,255,0.5);
    color: #fff;
}

.course-send-popover__panel {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 380px;
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 32px rgba(0,0,0,0.18);
    padding: 1.25rem 1.4rem;
    z-index: 100;
}

.course-send-popover__panel[hidden] { display: none; }

.course-send-popover__label {
    display: block;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: 0.5rem;
}

.course-send-popover__row {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.course-send-popover__input-wrap {
    flex: 1 1 0;
    min-width: 0;
    position: relative;
}

.course-send-popover__input {
    width: 100%;
    box-sizing: border-box;
    padding: 0.5rem 0.75rem;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--color-ink);
    background: var(--color-white);
    transition: border-color var(--transition);
}

.course-send-popover__input:focus {
    outline: none;
    border-color: var(--color-accent);
}

.course-send-popover__submit {
    padding-block: 0.5rem;
    padding-inline: 1.1rem;
    font-size: 0.875rem;
}

/* Custom autocomplete dropdown */
.course-send-popover__suggestions {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    margin: 0;
    padding: 0.3rem 0;
    list-style: none;
    background: #fff;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: 0 6px 20px rgba(0,0,0,0.12);
    z-index: 101;
    max-height: 200px;
    overflow-y: auto;
}

.course-send-popover__suggestions[hidden] { display: none; }

.course-send-popover__suggestion {
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    color: var(--color-ink);
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: background var(--transition), color var(--transition);
}

.course-send-popover__suggestion:hover,
.course-send-popover__suggestion.is-active {
    background: var(--color-accent);
    color: #fff;
}

.course-send-popover__status {
    margin: 0.5rem 0 0;
    font-size: 0.8rem;
}

.course-send-popover__status:empty { display: none; }

.course-send-popover__status--ok  { color: #16a34a; }
.course-send-popover__status--err { color: #dc2626; }

/* ── Article / prose section ──────────────── */

.course-article {
    padding-block: var(--space-12);
    border-top: 1px solid var(--color-border);
}

.course-prose {
    max-width: 740px;
    font-size: 0.95rem;
    line-height: 1.75;
    color: var(--color-ink);
}

.course-prose h1,
.course-prose h2,
.course-prose h3,
.course-prose h4 {
    font-weight: 800;
    color: var(--color-ink);
    margin-top: var(--space-8);
    margin-bottom: var(--space-3);
    line-height: 1.25;
}

.course-prose h1 { font-size: 1.75rem; margin-top: 0; }
.course-prose h2 { font-size: 1.3rem; padding-bottom: var(--space-2); border-bottom: 2px solid var(--color-border); }
.course-prose h3 { font-size: 1.05rem; }
.course-prose h4 { font-size: 0.95rem; }

.course-prose p { margin-bottom: var(--space-4); }

.course-prose a { color: var(--color-accent); font-weight: 500; }
.course-prose a:hover { color: var(--color-accent-dark); }

.course-prose strong { font-weight: 700; color: var(--color-ink); }
.course-prose em { font-style: italic; }

.course-prose ul,
.course-prose ol {
    margin-bottom: var(--space-4);
    padding-left: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.course-prose ul { list-style: disc; }
.course-prose ol { list-style: decimal; }
.course-prose li { line-height: 1.65; }
.course-prose li > ul,
.course-prose li > ol { margin-top: var(--space-2); margin-bottom: 0; }

.course-prose blockquote {
    margin: var(--space-5) 0;
    padding: var(--space-3) var(--space-5);
    background: var(--color-accent-glow);
    border-left: 4px solid var(--color-accent);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--color-accent-dark);
    font-size: 0.9rem;
}

.course-prose blockquote p { margin-bottom: 0; }

.course-prose code {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.82em;
    background: #f1f5f9;
    color: #c026d3;
    padding: 2px 6px;
    border-radius: 4px;
}

.course-prose pre {
    background: #0f1923;
    color: #e2e8f0;
    border-radius: var(--radius-md);
    padding: var(--space-5);
    overflow-x: auto;
    margin-bottom: var(--space-5);
    font-size: 0.83rem;
    line-height: 1.65;
}

.course-prose pre code {
    background: transparent;
    color: inherit;
    padding: 0;
    font-size: inherit;
}

.course-prose img {
    max-width: 100%;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    margin-block: var(--space-4);
    display: block;
}

.course-prose table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--space-6);
    font-size: 0.875rem;
}

.course-prose th,
.course-prose td {
    text-align: left;
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--color-border);
}

.course-prose th {
    background: var(--color-surface);
    font-weight: 700;
    color: var(--color-ink);
}

.course-prose tr:nth-child(even) td { background: var(--color-surface); }

.course-prose hr {
    border: none;
    border-top: 2px solid var(--color-border);
    margin-block: var(--space-8);
}

/* ── Related guides ───────────────────────── */

.course-related {
    /* background: var(--color-surface); */
    border-top: 1px solid var(--color-border);
    padding-block: var(--space-12);
}

.course-related__title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-ink);
    margin-bottom: var(--space-6);
}

.course-related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: var(--space-4);
}

.course-related-card {
    background: var(--color-white);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    text-decoration: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    transition: box-shadow var(--transition), border-color var(--transition);
}

.course-related-card:hover { box-shadow: var(--shadow-md); border-color: var(--color-accent); }

.course-related-card__type {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-accent);
}

.course-related-card__title {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-ink);
    line-height: 1.35;
}

.course-related-card__arrow {
    margin-top: auto;
    font-size: 0.8rem;
    color: var(--color-accent);
    font-weight: 600;
}