/* =========================================================
   Fusga Course Cards — feed de tarjetas
   Misma paleta que Fusga Student Auth (índigo → violeta)
   ========================================================= */

.fusga-courses-feed {
    --fa-card: #ffffff;
    --fa-text: #0f172a;
    --fa-muted: #64748b;
    --fa-border: #e2e8f0;
    --fa-soft: #f1f5f9;
    --fa-primary: #6366f1;
    --fa-primary-2: #8b5cf6;
    --fa-success: #10b981;
    --fa-radius: 18px;
    --fa-shadow: 0 10px 30px -12px rgba(79, 70, 229, .22);

    display: grid;
    gap: 24px;
    grid-template-columns: repeat(var(--cols, 3), minmax(0, 1fr));
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    padding: 8px 0;
}
.fusga-courses-feed[data-cols="1"] { --cols: 1; }
.fusga-courses-feed[data-cols="2"] { --cols: 2; }
.fusga-courses-feed[data-cols="3"] { --cols: 3; }
.fusga-courses-feed[data-cols="4"] { --cols: 4; }

@media (prefers-color-scheme: dark) {
    .fusga-courses-feed {
        --fa-card: #111827;
        --fa-text: #f1f5f9;
        --fa-muted: #94a3b8;
        --fa-border: #1f2937;
        --fa-soft: #1e293b;
        --fa-shadow: 0 10px 30px -12px rgba(0, 0, 0, .6);
    }
}

.fusga-courses-feed * { box-sizing: border-box; }

/* Tarjeta */
.fusga-course-card {
    display: flex;
    flex-direction: column;
    background: var(--fa-card);
    border: 1px solid var(--fa-border);
    border-radius: var(--fa-radius);
    overflow: hidden;
    box-shadow: var(--fa-shadow);
    transition: transform .25s cubic-bezier(.16,1,.3,1), box-shadow .25s;
    animation: fusga-card-in .5s cubic-bezier(.16,1,.3,1) both;
}
.fusga-course-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 22px 44px -16px rgba(79, 70, 229, .4);
}
@keyframes fusga-card-in {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* Imagen */
.fusga-course-thumb {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--fa-soft);
}
.fusga-course-thumb img {
    width: 100%; height: 100%;
    object-fit: cover; display: block;
    transition: transform .4s ease;
}
.fusga-course-card:hover .fusga-course-thumb img { transform: scale(1.05); }

.fusga-course-thumb-ph {
    width: 100%; height: 100%;
    background: linear-gradient(135deg, var(--fa-primary), var(--fa-primary-2));
    position: relative;
}
.fusga-course-thumb-ph::after {
    content: "";
    position: absolute; inset: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(255,255,255,.25), transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(255,255,255,.18), transparent 45%);
}

/* Badge nivel */
.fusga-course-badge {
    position: absolute;
    top: 12px; left: 12px;
    background: rgba(15, 23, 42, .72);
    color: #fff;
    backdrop-filter: blur(6px);
    font-size: 11.5px; font-weight: 600;
    letter-spacing: .02em;
    padding: 6px 11px;
    border-radius: 99px;
}

/* Cuerpo */
.fusga-course-body {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 20px;
    flex: 1;
}
.fusga-course-title {
    font-size: 17.5px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--fa-text);
    margin: 0;
    letter-spacing: -.01em;
}
.fusga-course-desc {
    font-size: 14px;
    line-height: 1.55;
    color: var(--fa-muted);
    margin: 0;
}
.fusga-course-meta {
    display: flex; align-items: center; gap: 8px;
    font-size: 12.5px; font-weight: 500;
    color: var(--fa-muted);
    margin-top: auto;
}
.fusga-dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--fa-success);
    box-shadow: 0 0 0 3px rgba(16,185,129,.18);
}

/* Pie: precio + botón */
.fusga-course-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 6px;
    padding-top: 16px;
    border-top: 1px solid var(--fa-border);
}
.fusga-course-price {
    font-size: 16px;
    font-weight: 800;
    color: var(--fa-text);
    letter-spacing: -.02em;
}
.fusga-course-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 600;
    color: #fff !important;
    text-decoration: none;
    border-radius: 11px;
    background: linear-gradient(135deg, var(--fa-primary), var(--fa-primary-2));
    box-shadow: 0 8px 18px -6px rgba(99,102,241,.6);
    transition: transform .15s, box-shadow .2s;
    white-space: nowrap;
}
.fusga-course-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 24px -6px rgba(99,102,241,.75);
}
.fusga-course-btn svg { transition: transform .2s; }
.fusga-course-btn:hover svg { transform: translateX(3px); }

/* Estado vacío */
.fusga-courses-empty {
    text-align: center;
    padding: 48px 20px;
    color: #64748b;
    font-size: 15px;
    border: 1.5px dashed #cbd5e1;
    border-radius: 16px;
}

/* Responsive */
@media (max-width: 900px) {
    .fusga-courses-feed[data-cols="3"],
    .fusga-courses-feed[data-cols="4"] { --cols: 2; }
}
@media (max-width: 560px) {
    .fusga-courses-feed { --cols: 1 !important; grid-template-columns: 1fr; }
}