/* ============================================
   Learner Support — Public site (homepage,
   folder browser, search results)
   --------------------------------------------
   Uses ONLY --ls-* tokens from theme.css and
   .ls-* classes so it can never collide with
   the dashboard (--am-*) or the player (--pl-*).
   ============================================ */

@import url('/assets/css/theme.css');

html, body {
    font-family: var(--ls-font-sans);
    color: var(--ls-ink);
    background: var(--ls-paper);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--ls-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; height: auto; display: block; }

/* ----- Skip link (a11y) ----- */
.ls-skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--ls-ink);
    color: white;
    padding: 0.5rem 1rem;
    z-index: 1000;
    border-radius: 0 0 var(--ls-radius-sm) 0;
    transition: top 0.2s;
}
.ls-skip-link:focus { top: 0; }

/* ============================================
   Header / nav
   ============================================ */
.ls-site-header {
    background: white;
    border-bottom: 1px solid var(--ls-border);
    position: sticky;
    top: 0;
    z-index: 50;
}
.ls-site-header-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0.85rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
}
.ls-brand {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    font-family: var(--ls-font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--ls-ink);
}
.ls-brand:hover { text-decoration: none; }
.ls-brand-icon { font-size: 1.5rem; }
.ls-site-nav {
    display: flex;
    gap: 0.4rem;
    margin-left: auto;
    flex-wrap: wrap;
}
.ls-nav-link {
    color: var(--ls-ink);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 0.85rem;
    border-radius: var(--ls-radius-sm);
    transition: background var(--ls-transition);
}
.ls-nav-link:hover {
    background: var(--ls-primary-pale);
    text-decoration: none;
}
.ls-nav-link.is-active {
    background: var(--ls-primary-pale);
    color: var(--ls-primary);
    font-weight: 600;
}
.ls-nav-teacher {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 0.95rem;
    border-radius: var(--ls-radius-sm);
    background: var(--ls-paper-cool);
    color: var(--ls-ink);
    font-weight: 600;
    font-size: 0.9rem;
}
.ls-nav-teacher:hover {
    background: var(--ls-primary);
    color: white;
    text-decoration: none;
}
.ls-nav-toggle {
    display: none;
    background: none;
    border: 1.5px solid var(--ls-border);
    border-radius: var(--ls-radius-sm);
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
    cursor: pointer;
    color: var(--ls-ink);
}

/* ============================================
   Main / sections
   ============================================ */
.ls-main {
    min-height: calc(100vh - 200px);
}
.ls-section {
    max-width: 1180px;
    margin: 0 auto;
    padding: 3rem 1.25rem;
}
.ls-section-tight { padding: 2rem 1.25rem; }

.ls-section-heading {
    font-family: var(--ls-font-display);
    font-size: 1.65rem;
    font-weight: 700;
    color: var(--ls-ink);
    margin-bottom: 0.5rem;
}
.ls-section-sub {
    color: var(--ls-muted);
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

/* ============================================
   Hero band (homepage + folder/search top)
   ============================================ */
.ls-hero {
    background: linear-gradient(135deg, var(--ls-primary-pale) 0%, var(--ls-paper-cool) 100%);
    border-bottom: 1px solid var(--ls-border);
}
.ls-hero-inner {
    max-width: 980px;
    margin: 0 auto;
    padding: 4rem 1.25rem 3.5rem;
    text-align: center;
}
.ls-hero-eyebrow {
    display: inline-block;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--ls-primary);
    background: white;
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    margin-bottom: 1rem;
}
.ls-hero-title {
    font-family: var(--ls-font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    color: var(--ls-ink);
    line-height: 1.15;
    margin-bottom: 0.85rem;
}
.ls-hero-tagline {
    font-size: 1.1rem;
    color: var(--ls-muted);
    max-width: 640px;
    margin: 0 auto 2rem;
}

/* ----- Hero search ----- */
.ls-search-form {
    max-width: 560px;
    margin: 0 auto;
    display: flex;
    gap: 0.5rem;
    background: white;
    border-radius: 999px;
    padding: 0.4rem 0.4rem 0.4rem 1.25rem;
    box-shadow: var(--ls-shadow);
    border: 2px solid transparent;
    transition: border-color var(--ls-transition);
}
.ls-search-form:focus-within {
    border-color: var(--ls-primary);
}
.ls-search-form label {
    position: absolute;
    width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.ls-search-input {
    flex: 1;
    border: none;
    outline: none;
    font-family: inherit;
    font-size: 1rem;
    background: transparent;
    color: var(--ls-ink);
}
.ls-search-input::placeholder { color: var(--ls-muted); }
.ls-search-submit {
    border: none;
    background: var(--ls-primary);
    color: white;
    font-family: inherit;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.7rem 1.4rem;
    border-radius: 999px;
    cursor: pointer;
    transition: background var(--ls-transition);
}
.ls-search-submit:hover { background: var(--ls-primary-light); }

/* ============================================
   "Who is this for" two-column block
   ============================================ */
.ls-audience {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    max-width: 980px;
    margin: 0 auto;
}
.ls-audience-card {
    background: white;
    border: 1px solid var(--ls-border);
    border-radius: var(--ls-radius);
    padding: 1.75rem;
}
.ls-audience-card h3 {
    font-family: var(--ls-font-display);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--ls-ink);
}
.ls-audience-card p {
    color: var(--ls-muted);
    font-size: 0.95rem;
}

/* ============================================
   Folder cards (entry grid + child grids)
   ============================================ */
.ls-folder-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1rem;
}
.ls-folder-grid-lg {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.25rem;
}

.ls-folder-card {
    --ls-card-accent: var(--ls-primary);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 1.5rem 1.4rem;
    background: white;
    border: 1.5px solid var(--ls-border);
    border-radius: var(--ls-radius);
    color: var(--ls-ink);
    transition: transform var(--ls-transition), box-shadow var(--ls-transition), border-color var(--ls-transition);
    position: relative;
    overflow: hidden;
}
.ls-folder-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: var(--ls-card-accent);
}
.ls-folder-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--ls-shadow);
    border-color: var(--ls-card-accent);
    text-decoration: none;
}
.ls-folder-card-icon {
    font-size: 2.2rem;
    line-height: 1;
}
.ls-folder-card-body {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}
.ls-folder-card-title {
    font-family: var(--ls-font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--ls-ink);
}
.ls-folder-card-desc {
    font-size: 0.9rem;
    color: var(--ls-muted);
    line-height: 1.45;
}
.ls-card-count {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--ls-primary);
    background: var(--ls-primary-pale);
    padding: 0.2rem 0.65rem;
    border-radius: 999px;
    align-self: flex-start;
    margin-top: 0.35rem;
}

/* ============================================
   Quick browse chip strip (homepage)
   ============================================ */
.ls-chip-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.ls-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 0.95rem;
    background: white;
    border: 1.5px solid var(--ls-border);
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--ls-ink);
    transition: all var(--ls-transition);
}
.ls-chip:hover {
    border-color: var(--ls-primary);
    background: var(--ls-primary-pale);
    color: var(--ls-primary);
    text-decoration: none;
}

/* ============================================
   Activity cards (folder/search results)
   ============================================ */
.ls-activity-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.1rem;
}

.ls-activity-card {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 1.4rem;
    background: white;
    border: 1px solid var(--ls-border);
    border-radius: var(--ls-radius);
    transition: transform var(--ls-transition), box-shadow var(--ls-transition);
}
.ls-activity-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--ls-shadow-sm);
}
.ls-activity-card-icon {
    font-size: 1.8rem;
    line-height: 1;
}
.ls-activity-card-body {
    flex: 1;
}
.ls-activity-card-title {
    font-family: var(--ls-font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--ls-ink);
    margin-bottom: 0.35rem;
}
.ls-activity-card-desc {
    font-size: 0.875rem;
    color: var(--ls-muted);
    line-height: 1.5;
}

/* ============================================
   Buttons
   ============================================ */
.ls-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.65rem 1.1rem;
    font-family: inherit;
    font-weight: 600;
    font-size: 0.9rem;
    border: 1.5px solid transparent;
    border-radius: var(--ls-radius-sm);
    cursor: pointer;
    transition: all var(--ls-transition);
    text-decoration: none;
    align-self: flex-start;
}
.ls-btn-primary {
    background: var(--ls-primary);
    color: white;
}
.ls-btn-primary:hover {
    background: var(--ls-primary-light);
    text-decoration: none;
}
.ls-btn-outline {
    background: transparent;
    border-color: var(--ls-border);
    color: var(--ls-ink);
}
.ls-btn-outline:hover {
    border-color: var(--ls-primary);
    color: var(--ls-primary);
    background: var(--ls-primary-pale);
    text-decoration: none;
}

/* ============================================
   Breadcrumb (folder.php)
   ============================================ */
.ls-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    align-items: center;
    font-size: 0.875rem;
    color: var(--ls-muted);
    margin-bottom: 1.25rem;
}
.ls-breadcrumb a { color: var(--ls-muted); }
.ls-breadcrumb a:hover { color: var(--ls-primary); }
.ls-breadcrumb-sep { opacity: 0.6; }
.ls-breadcrumb-current { color: var(--ls-ink); font-weight: 600; }

/* ============================================
   Empty state
   ============================================ */
.ls-empty {
    text-align: center;
    padding: 3rem 1.25rem;
    color: var(--ls-muted);
}
.ls-empty-icon {
    font-size: 2.75rem;
    margin-bottom: 0.75rem;
}
.ls-empty h3 {
    font-family: var(--ls-font-display);
    color: var(--ls-ink);
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

/* ============================================
   Footer
   ============================================ */
.ls-site-footer {
    margin-top: 4rem;
    background: white;
    border-top: 1px solid var(--ls-border);
    color: var(--ls-ink);
}
.ls-site-footer-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 3rem 1.25rem 2rem;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 2.5rem;
}
.ls-footer-col {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.ls-footer-col a {
    color: var(--ls-muted);
    font-size: 0.9rem;
}
.ls-footer-col a:hover { color: var(--ls-primary); }
.ls-footer-brand {
    font-family: var(--ls-font-display);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--ls-ink);
}
.ls-footer-tagline {
    color: var(--ls-muted);
    font-size: 0.9rem;
    line-height: 1.55;
    max-width: 380px;
}
.ls-footer-heading {
    font-family: var(--ls-font-display);
    font-size: 0.95rem;
    color: var(--ls-ink);
    margin-bottom: 0.4rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.ls-site-footer-bar {
    border-top: 1px solid var(--ls-border);
    max-width: 1180px;
    margin: 0 auto;
    padding: 1rem 1.25rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.825rem;
    color: var(--ls-muted);
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 880px) {
    .ls-site-header-inner {
        flex-wrap: wrap;
        position: relative;
    }
    .ls-nav-toggle { display: inline-flex; align-items: center; justify-content: center; margin-left: auto; }
    .ls-site-nav,
    .ls-nav-teacher {
        display: none;
        width: 100%;
    }
    .ls-site-header.is-open .ls-site-nav,
    .ls-site-header.is-open .ls-nav-teacher {
        display: flex;
        flex-direction: column;
        gap: 0.25rem;
        margin-top: 0.5rem;
    }
    .ls-site-header.is-open .ls-nav-teacher {
        text-align: center;
        justify-content: center;
    }
    .ls-audience { grid-template-columns: 1fr; }
    .ls-site-footer-inner {
        grid-template-columns: 1fr;
        gap: 1.75rem;
        padding-top: 2rem;
    }
}

@media (max-width: 560px) {
    .ls-hero-inner { padding: 2.75rem 1.25rem 2.5rem; }
    .ls-section { padding: 2rem 1.25rem; }
    .ls-search-form {
        border-radius: var(--ls-radius);
        padding: 0.5rem;
        flex-direction: column;
        gap: 0.5rem;
    }
    .ls-search-input { padding: 0.5rem 0.75rem; }
    .ls-search-submit { width: 100%; padding: 0.85rem; }
    .ls-folder-grid,
    .ls-activity-grid {
        grid-template-columns: 1fr;
    }
}