/* =============================================
   AMELIA ACADEMY — MAIN CSS
   Core component styles: cards, accordion,
   sliders, footer, WhatsApp widget
   ============================================= */

/* ── Course Gallery ─────────────────────────── */
#courses-gallery {
    padding-top: 50px;
    padding-bottom: 50px;
}

.course-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    width: 100%;
}

.course-card {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.3), 0 2px 4px -1px rgba(0,0,0,0.1);
    aspect-ratio: 3 / 2;
    cursor: pointer;
    border: 1px solid rgba(255,255,255,0.1);
}

.course-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    display: block;
}

.course-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(3,4,94,0.9), rgba(3,4,94,0.3));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.25rem;
    opacity: 0;
    transition: opacity 0.4s ease;
    padding: 2rem;
}

.course-title {
    color: white;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-align: center;
    opacity: 0;
    transform: translateY(15px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: 'Montserrat', sans-serif;
    font-size: 1.25rem;
    text-shadow: 0 4px 8px rgba(0,0,0,0.4);
    line-height: 1.4;
}

.course-card-btn {
    background-color: white;
    color: #03045E;
    padding: 0.6rem 1.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    transition-delay: 0.1s;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

/* Card hover interactions */
.course-card:hover .course-image,
.course-card:active .course-image {
    transform: scale(1.1);
}
.course-card:hover .course-overlay,
.course-card:active .course-overlay {
    opacity: 1;
}
.course-card:hover .course-title,
.course-card:active .course-title {
    opacity: 1;
    transform: translateY(0);
}
.course-card:hover .course-card-btn,
.course-card:active .course-card-btn {
    opacity: 1;
    transform: translateY(0);
}
.course-card-btn:hover {
    background-color: #f1f5f9;
    transform: scale(1.05);
}

/* ── Accordion ──────────────────────────────── */
.accordion-content {
    transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
    max-height: 0;
    overflow: hidden;
}
.accordion-content.active {
    max-height: 500px;
}

/* ── WhatsApp Widget ────────────────────────── */
#whatsapp-widget {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 50;
}