/* FBISE Study Portal Frontend - homepage styles
 * Loaded only on the homepage.
 * Mobile-first, theme-agnostic, no framework.
 */

.fbise-fe {
    --fbise-fe-bg: #ffffff;
    --fbise-fe-bg-alt: #f6f8fb;
    --fbise-fe-fg: #1a2230;
    --fbise-fe-muted: #5b6675;
    --fbise-fe-border: #e3e7ee;
    --fbise-fe-primary: #1f6feb;
    --fbise-fe-primary-fg: #ffffff;
    --fbise-fe-primary-soft: #e8f0fe;
    --fbise-fe-accent: #0e9f6e;
    --fbise-fe-radius: 10px;
    --fbise-fe-shadow: 0 1px 3px rgba(16, 24, 40, 0.05), 0 1px 2px rgba(16, 24, 40, 0.04);
    --fbise-fe-max: 1080px;

    color: var(--fbise-fe-fg);
    background: var(--fbise-fe-bg);
    line-height: 1.55;
    font-size: 16px;
}

.fbise-fe *,
.fbise-fe *::before,
.fbise-fe *::after { box-sizing: border-box; }

.fbise-fe-container {
    max-width: var(--fbise-fe-max);
    margin: 0 auto;
    padding: 0 16px;
}

.fbise-fe-section { padding: 40px 0; }
.fbise-fe-section-alt { background: var(--fbise-fe-bg-alt); }

.fbise-fe-h2 {
    margin: 0 0 6px;
    font-size: clamp(1.3rem, 1.05rem + 1.1vw, 1.6rem);
    line-height: 1.25;
}
.fbise-fe-h3 {
    margin: 0 0 6px;
    font-size: 1.05rem;
    line-height: 1.3;
}
.fbise-fe-lead {
    margin: 0 0 20px;
    color: var(--fbise-fe-muted);
}
.fbise-fe-empty {
    margin: 8px 0 0;
    color: var(--fbise-fe-muted);
}

/* Hero ------------------------------------------------------------------ */

.fbise-fe-hero {
    padding: 56px 0 44px;
    background: linear-gradient(180deg, var(--fbise-fe-primary-soft) 0%, var(--fbise-fe-bg) 100%);
    border-bottom: 1px solid var(--fbise-fe-border);
}
.fbise-fe-hero-title {
    margin: 0 0 10px;
    font-size: clamp(1.6rem, 1.15rem + 2.2vw, 2.4rem);
    line-height: 1.2;
    letter-spacing: -0.01em;
}
.fbise-fe-hero-sub {
    margin: 0 0 22px;
    max-width: 640px;
    color: var(--fbise-fe-muted);
    font-size: 1.02rem;
}
.fbise-fe-hero-actions {
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

/* Buttons --------------------------------------------------------------- */

.fbise-fe-btn {
    display: inline-block;
    padding: 10px 16px;
    border-radius: var(--fbise-fe-radius);
    border: 1px solid transparent;
    font-weight: 600;
    text-decoration: none;
    line-height: 1.2;
    cursor: pointer;
    transition: background-color .15s ease, border-color .15s ease, color .15s ease;
}
.fbise-fe-btn-primary {
    background: var(--fbise-fe-primary);
    color: var(--fbise-fe-primary-fg);
}
.fbise-fe-btn-primary:hover,
.fbise-fe-btn-primary:focus { background: #1a5fd0; color: #fff; }
.fbise-fe-btn-primary[disabled] { opacity: .5; cursor: not-allowed; }

.fbise-fe-btn-ghost {
    background: transparent;
    color: var(--fbise-fe-fg);
    border-color: var(--fbise-fe-border);
}
.fbise-fe-btn-ghost:hover,
.fbise-fe-btn-ghost:focus { background: #fff; border-color: #c8d0dc; }

/* Class cards ----------------------------------------------------------- */

.fbise-fe-class-grid {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 14px;
}
.fbise-fe-class-card {
    background: #fff;
    border: 1px solid var(--fbise-fe-border);
    border-radius: var(--fbise-fe-radius);
    box-shadow: var(--fbise-fe-shadow);
    overflow: hidden;
    transition: border-color .15s ease, transform .15s ease;
}
.fbise-fe-class-card:hover,
.fbise-fe-class-card:focus-within {
    border-color: #c8d0dc;
    transform: translateY(-1px);
}
.fbise-fe-class-link {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 18px;
    color: inherit;
    text-decoration: none;
    height: 100%;
}
.fbise-fe-class-name {
    font-size: 1.15rem;
    font-weight: 700;
}
.fbise-fe-class-level {
    color: var(--fbise-fe-muted);
    font-size: .9rem;
}
.fbise-fe-class-meta {
    color: var(--fbise-fe-muted);
    font-size: .92rem;
    margin-top: 6px;
}
.fbise-fe-class-cta {
    margin-top: auto;
    padding-top: 12px;
    color: var(--fbise-fe-primary);
    font-weight: 600;
}

/* Exam prep ------------------------------------------------------------- */

.fbise-fe-prep-grid {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 12px;
}
.fbise-fe-prep-card {
    background: #fff;
    border: 1px solid var(--fbise-fe-border);
    border-radius: var(--fbise-fe-radius);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.fbise-fe-prep-name { font-weight: 600; }
.fbise-fe-prep-desc { color: var(--fbise-fe-muted); font-size: .92rem; }
.fbise-fe-prep-status {
    margin-top: auto;
    font-size: .85rem;
    padding: 3px 8px;
    border-radius: 999px;
    align-self: flex-start;
}
.fbise-fe-status-live {
    background: #e6f6ee;
    color: #0b6b48;
}
.fbise-fe-status-soon {
    background: #f1f3f6;
    color: #5b6675;
}

/* Browse structure ------------------------------------------------------ */

.fbise-fe-path {
    list-style: none;
    margin: 0 0 12px;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    font-weight: 600;
}
.fbise-fe-path li {
    background: #fff;
    border: 1px solid var(--fbise-fe-border);
    border-radius: 999px;
    padding: 6px 14px;
}
.fbise-fe-path li + li::before {
    content: "→";
    margin-right: 8px;
    color: var(--fbise-fe-muted);
    font-weight: 400;
}
.fbise-fe-example {
    margin: 0 0 20px;
    color: var(--fbise-fe-muted);
}

/* Navigator ------------------------------------------------------------- */

.fbise-fe-navigator {
    background: #fff;
    border: 1px solid var(--fbise-fe-border);
    border-radius: var(--fbise-fe-radius);
    padding: 18px;
    box-shadow: var(--fbise-fe-shadow);
}
.fbise-fe-nav-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    align-items: end;
}
@media (min-width: 720px) {
    .fbise-fe-nav-row {
        grid-template-columns: 1fr 1fr 1fr auto;
    }
}
.fbise-fe-nav-field {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: .92rem;
    color: var(--fbise-fe-muted);
}
.fbise-fe-nav-field select {
    width: 100%;
    padding: 9px 10px;
    border: 1px solid var(--fbise-fe-border);
    border-radius: 8px;
    background: #fff;
    color: var(--fbise-fe-fg);
    font: inherit;
}
.fbise-fe-nav-go { margin: 0; }
.fbise-fe-noscript {
    margin: 12px 0 0;
    color: var(--fbise-fe-muted);
    font-size: .92rem;
}

/* Latest ---------------------------------------------------------------- */

.fbise-fe-latest-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 10px;
}
.fbise-fe-latest-item a {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 14px;
    background: #fff;
    border: 1px solid var(--fbise-fe-border);
    border-radius: var(--fbise-fe-radius);
    color: inherit;
    text-decoration: none;
}
.fbise-fe-latest-item a:hover,
.fbise-fe-latest-item a:focus { border-color: #c8d0dc; }
.fbise-fe-latest-title { font-weight: 600; }
.fbise-fe-latest-meta { color: var(--fbise-fe-muted); font-size: .9rem; }

/* Why ------------------------------------------------------------------- */

.fbise-fe-why-grid {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 14px;
}
.fbise-fe-why-card {
    background: #fff;
    border: 1px solid var(--fbise-fe-border);
    border-radius: var(--fbise-fe-radius);
    padding: 18px;
}
.fbise-fe-why-card p { margin: 0; color: var(--fbise-fe-muted); }

/* Small screens --------------------------------------------------------- */

@media (max-width: 480px) {
    .fbise-fe-hero { padding: 40px 0 32px; }
    .fbise-fe-section { padding: 30px 0; }
    .fbise-fe-hero-actions .fbise-fe-btn { width: 100%; text-align: center; }
}