/* References Page Styling */

/* Page Header */
.ref-header {
    padding: 8rem 0 5rem;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    position: relative;
    overflow: hidden;
    color: white;
    text-align: center;
}

.ref-header::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(255,255,255,0.03) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(255,255,255,0.03) 0%, transparent 20%);
    z-index: 1;
}

.ref-header .content {
    position: relative;
    z-index: 2;
}

.ref-header h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, #ffffff, #cbd5e1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 10px 30px rgba(0,0,0,0.15);
    letter-spacing: -0.02em;
}

.ref-header p {
    font-size: 1.25rem;
    color: rgba(255,255,255,0.8);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

/* Reference Cards Grid */
.ref-grid-section {
    padding: 5rem 0;
}

.ref-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 2rem;
}

.ref-card {
    background: #ffffff;
    border: 1px solid rgba(226, 232, 240, 0.8);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 180px;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.ref-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 4px;
    background: linear-gradient(90deg, var(--primary, #4f46e5), var(--accent, #f43f5e));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.ref-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    border-color: transparent;
}

.ref-card:hover::before {
    transform: scaleX(1);
}

.ref-card img {
    max-width: 85%;
    max-height: 85%;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.6;
    transition: all 0.4s ease;
    transform: scale(0.95);
}

.ref-card:hover img {
    filter: grayscale(0%);
    opacity: 1;
    transform: scale(1.05);
}

.ref-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: radial-gradient(circle at center, var(--bg-muted, #f3f4f6) 0%, transparent 70%);
    border-radius: var(--radius-md);
}

.ref-placeholder span {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary, #4f46e5);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* CTA Section */
.ref-cta {
    padding: 6rem 0;
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.ref-cta::before {
    content: '';
    position: absolute;
    top: -50%; right: -10%; width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(255,255,255,0.03) 0%, transparent 70%);
    border-radius: 50%;
}

.ref-cta h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: white;
}

.ref-cta p {
    color: rgba(255,255,255,0.8);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    font-size: 1.1rem;
    line-height: 1.6;
}

.ref-cta .btn-group {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.ref-cta .btn-white {
    background: white;
    color: var(--text-main, #1f2937);
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 600;
    transition: transform 0.2s;
    border: 2px solid white;
}

.ref-cta .btn-white:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.ref-cta .btn-outline {
    background: transparent;
    color: white;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 600;
    border: 2px solid rgba(255,255,255,0.3);
    transition: all 0.2s;
}

.ref-cta .btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: white;
    transform: translateY(-3px);
}

@media (max-width: 768px) {
    .ref-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    .ref-card {
        padding: 1.5rem;
        height: 140px;
    }
    .ref-header h1 { font-size: 2.5rem; }
}