/* ════════════════════════════════════════════════════════════
   3K TEDARİK — Referanslar (Premium Theme)
   services.css ile aynı sl-* tasarım dili
   ════════════════════════════════════════════════════════════ */

/* ═══════════════════════════════════════════════════════════
   1. REFERENCES GRID SECTION
   ═══════════════════════════════════════════════════════════ */
.sl-ref-section{
    padding:50px 0 80px;
    background:var(--sl-bg);
    position:relative;
}

.sl-ref-grid{
    display:grid;
    grid-template-columns:repeat(5,1fr);
    gap:18px;
}

/* ── Reference Card (logo + bilgi) ── */
.sl-ref-card{
    position:relative;
    background:#fff;
    border:1px solid var(--sl-border);
    border-radius:16px;
    overflow:hidden;
    padding:24px 18px 20px;
    text-align:center;
    box-shadow:var(--sl-card-shadow);
    transition:transform .35s cubic-bezier(.16,1,.3,1),
               box-shadow .35s ease,
               border-color .25s ease;
    display:flex;
    flex-direction:column;
    align-items:center;
    gap:14px;
}
.sl-ref-card::before{
    content:"";
    position:absolute;
    top:0;left:0;right:0;
    height:4px;
    background:linear-gradient(90deg,var(--sl-accent),var(--sl-accent-2));
    transform:scaleX(0);
    transform-origin:left;
    transition:transform .4s ease;
    border-radius:16px 16px 0 0;
}
.sl-ref-card::after{
    content:"";
    position:absolute;
    inset:0;
    background:radial-gradient(420px 200px at 50% -20%,rgba(74,127,181,.08) 0%,transparent 60%);
    opacity:0;
    transition:opacity .35s ease;
    pointer-events:none;
}
.sl-ref-card:hover{
    transform:translateY(-6px);
    box-shadow:var(--sl-card-shadow-hover);
    border-color:rgba(74,127,181,.30);
}
.sl-ref-card:hover::before{transform:scaleX(1)}
.sl-ref-card:hover::after{opacity:1}

/* ── Logo Wrap ── */
.sl-ref-logo{
    width:100%;
    height:90px;
    display:flex;
    align-items:center;
    justify-content:center;
    background:linear-gradient(135deg,#fafbfd 0%,#f1f5fb 100%);
    border:1px solid var(--sl-border);
    border-radius:12px;
    padding:14px;
    transition:background .3s ease, border-color .25s ease;
    position:relative;
    z-index:1;
}
.sl-ref-card:hover .sl-ref-logo{
    background:#fff;
    border-color:rgba(74,127,181,.25);
}
.sl-ref-logo img{
    max-width:100%;
    max-height:100%;
    object-fit:contain;
    /* Logolar her zaman kendi renklerinde gösterilir; hover'da hafif yakınlaşır */
    transition:transform .35s ease;
}
.sl-ref-card:hover .sl-ref-logo img{
    transform:scale(1.05);
}

/* ── Logo Initial Fallback ── */
.sl-ref-initial{
    width:64px;height:64px;
    border-radius:14px;
    background:linear-gradient(135deg,var(--sl-primary),var(--sl-accent));
    color:#fff;
    display:inline-flex;align-items:center;justify-content:center;
    font-family:'Montserrat',sans-serif;
    font-size:1.35rem;font-weight:800;
    letter-spacing:.02em;
    text-transform:uppercase;
    box-shadow:0 8px 18px rgba(27,42,74,.25);
    transition:transform .3s ease;
}
.sl-ref-card:hover .sl-ref-initial{transform:scale(1.06) rotate(-2deg)}

/* ── Firma Adı + Sektör ── */
.sl-ref-info{
    position:relative;
    z-index:1;
    display:flex;
    flex-direction:column;
    gap:6px;
    align-items:center;
    width:100%;
}
.sl-ref-name{
    font-family:'Montserrat',sans-serif;
    font-size:.95rem;
    font-weight:700;
    color:var(--sl-text);
    line-height:1.3;
    letter-spacing:-.005em;
    margin:0;
    transition:color .2s ease;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
}
.sl-ref-card:hover .sl-ref-name{color:var(--sl-accent)}

.sl-ref-sector{
    display:inline-flex;align-items:center;gap:5px;
    padding:3px 10px;
    background:rgba(74,127,181,.08);
    border:1px solid rgba(74,127,181,.15);
    border-radius:100px;
    color:var(--sl-accent);
    font-size:.7rem;
    font-weight:600;
    text-transform:uppercase;
    letter-spacing:.04em;
}

/* ═══════════════════════════════════════════════════════════
   2. EMPTY STATE
   ═══════════════════════════════════════════════════════════ */
.sl-ref-empty{
    text-align:center;
    padding:80px 30px;
    background:#fff;
    border:1px dashed var(--sl-border);
    border-radius:18px;
}
.sl-ref-empty-icon{
    width:84px;height:84px;
    border-radius:22px;
    margin:0 auto 18px;
    display:inline-flex;align-items:center;justify-content:center;
    background:linear-gradient(135deg,rgba(74,127,181,.10),rgba(27,42,74,.08));
    color:var(--sl-accent);
    font-size:2rem;
    border:1px solid rgba(74,127,181,.18);
}
.sl-ref-empty-title{
    font-family:'Montserrat',sans-serif;
    font-size:1.15rem;
    font-weight:800;
    color:var(--sl-text);
    margin:0 0 8px;
}
.sl-ref-empty-desc{
    font-size:.95rem;
    color:var(--sl-text-muted);
    margin:0;
    line-height:1.6;
}

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════ */
@media(max-width:1200px){
    .sl-ref-grid{grid-template-columns:repeat(4,1fr)}
}
@media(max-width:900px){
    .sl-ref-grid{grid-template-columns:repeat(3,1fr);gap:14px}
}
@media(max-width:600px){
    .sl-ref-grid{grid-template-columns:repeat(2,1fr);gap:12px}
    .sl-ref-card{padding:18px 14px 16px;gap:12px}
    .sl-ref-logo{height:72px;padding:10px}
    .sl-ref-initial{width:56px;height:56px;font-size:1.15rem;border-radius:12px}
}
@media(max-width:400px){
    .sl-ref-grid{grid-template-columns:1fr}
}