/* ==========================================
   Referenzen Page — Light Purple Theme 2026
   ========================================== */

/* ── Hero ── */
.ref-hero {
    background: linear-gradient(135deg, rgba(59,52,112,0.06) 0%, transparent 60%);
    padding: 8rem 2rem 5rem;
    text-align: center;
}
.ref-hero-inner {
    max-width: 700px;
    margin: 0 auto;
}
.ref-hero-badge {
    display: inline-block;
    background: rgba(59,52,112,0.1);
    color: var(--color-accent, #3B3470);
    padding: 0.35rem 1rem;
    border-radius: 9999px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
}
.ref-hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    color: var(--color-text, #1C1B2E);
    margin-bottom: 1rem;
    line-height: 1.1;
}
.ref-hero h1 em {
    font-style: italic;
    color: var(--color-accent, #3B3470);
}
.ref-hero p {
    color: #5B5680;
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

/* ── Stats ── */
.ref-stats {
    display: flex;
    gap: 3rem;
    justify-content: center;
    margin-top: 2rem;
}
.ref-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.ref-stat strong {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent, #3B3470);
}
.ref-stat span {
    font-size: 0.8rem;
    color: #5B5680;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ── Filter ── */
.ref-filter {
    padding: 2rem;
    text-align: center;
    border-bottom: 1px solid #E8E6F0;
    background: #fff;
}
.ref-filter-inner {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
}
.ref-filter-btn {
    padding: 0.5rem 1.25rem;
    border-radius: 9999px;
    border: 1px solid #E8E6F0;
    background: white;
    color: #5B5680;
    font-family: inherit;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
}
.ref-filter-btn:hover,
.ref-filter-btn.active {
    background: var(--color-accent, #3B3470);
    color: white;
    border-color: var(--color-accent, #3B3470);
}

/* ── Grid ── */
.ref-grid {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 2rem;
}

/* ── Card ── */
.ref-card {
    background: white;
    border-radius: 16px;
    border: 1px solid #E8E6F0;
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.ref-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(59,52,112,0.12);
}

/* ── Card Image ── */
.ref-card-img {
    position: relative;
    overflow: hidden;
    height: 220px;
    background: #F5F4F9;
}
.ref-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
}

/* ── Card Badge ── */
.ref-card-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.3rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    background: #3B3470;
    color: white;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}


/* ── Card Body ── */
.ref-card-body {
    padding: 1.5rem;
}
.ref-card-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}
.ref-card-year {
    font-size: 0.8rem;
    color: #9896B0;
}
.ref-card-body h2 {
    font-size: 1.2rem;
    font-weight: 700;
    color: #1C1B2E;
    margin-bottom: 0.5rem;
}
.ref-card-body p {
    font-size: 0.9rem;
    color: #5B5680;
    line-height: 1.5;
    margin-bottom: 1rem;
}

/* ── Tags ── */
.ref-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1.25rem;
}
.ref-card-tags span {
    font-size: 0.75rem;
    background: rgba(59,52,112,0.08);
    color: #3B3470;
    padding: 0.2rem 0.6rem;
    border-radius: 9999px;
}

/* ── Actions ── */
.ref-card-actions {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}
.ref-case-study-btn {
    background: #3B3470;
    color: white;
    padding: 0.5rem 1.1rem;
    border-radius: 9999px;
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    transition: opacity 0.2s;
}
.ref-case-study-btn:hover {
    opacity: 0.85;
    color: white;
}
.ref-ext-btn {
    color: #5B5680;
    font-size: 0.85rem;
    text-decoration: none;
    transition: color 0.2s;
}
.ref-ext-btn:hover {
    color: #3B3470;
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .ref-grid {
        grid-template-columns: 1fr;
        padding: 2rem 1rem;
    }
    .ref-stats {
        gap: 1.5rem;
    }
    .ref-hero {
        padding: 6rem 1.5rem 3rem;
    }
}