/* ==========================================================================
   CepteBakım — references.css
   Referanslarımız sayfasının tüm stilleri tek dosyada.
   main.css'teki tema değişkenleri kullanılır.
   ========================================================================== */

/* ==========================================================================
   TOPBAR (index sayfasındakiyle aynı yapı, küçük farklarla)
   ========================================================================== */


/* ==========================================================================
   HERO HEADER
   ========================================================================== */

.cb-ref-hero {
    padding: 5rem 0 3rem;
    position: relative;
    overflow: hidden;
}

.cb-ref-hero::before {
    content: '';
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 400px;
    background: radial-gradient(ellipse, var(--cb-accent-soft) 0%, transparent 60%);
    pointer-events: none;
    z-index: 0;
}

.cb-ref-hero-inner {
    position: relative;
    z-index: 1;
    text-align: center;
}

.cb-eyebrow {
    font-family: var(--cb-font-mono);
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--cb-accent);
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
}

.cb-eyebrow::before,
.cb-eyebrow::after {
    content: '';
    width: 22px;
    height: 1px;
    background: var(--cb-accent);
    display: inline-block;
}

.cb-ref-hero h1 {
    font-size: clamp(2.2rem, 5vw, 3.75rem);
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin: 1rem 0 1rem;
    color: var(--cb-text);
}

.cb-ref-hero h1 em {
    font-family: var(--cb-font-serif);
    font-style: italic;
    color: var(--cb-accent);
    font-weight: 400;
}

.cb-ref-hero p {
    font-size: 1.1rem;
    color: var(--cb-text-muted);
    max-width: 620px;
    margin: 0 auto;
    line-height: 1.65;
}

/* Stats row */
.cb-ref-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
    margin-top: 3rem;
    padding-top: 3rem;
    border-top: 1px solid var(--cb-border);
}

.cb-ref-stat {
    text-align: center;
}

.cb-ref-stat-num {
    font-family: var(--cb-font-serif);
    font-style: italic;
    font-size: 2.75rem;
    color: var(--cb-accent);
    line-height: 1;
    font-weight: 400;
}

.cb-ref-stat-label {
    font-family: var(--cb-font-mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--cb-text-dim);
    margin-top: 0.5rem;
}

/* ==========================================================================
   LAYOUT — sidebar + content
   ========================================================================== */

.cb-ref-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 2.5rem;
    padding: 3rem 0 6rem;
    align-items: flex-start;
}

@media (max-width: 991px) {
    .cb-ref-layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

/* ==========================================================================
   SIDEBAR — sektör filtreleri
   ========================================================================== */

.cb-ref-sidebar {
    position: sticky;
    top: 6rem;
}

.cb-ref-sidebar-label {
    font-family: var(--cb-font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--cb-text-dim);
    padding: 0 0.85rem;
    margin-bottom: 0.75rem;
}

.cb-sector-list {
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem;
}

.cb-sector-btn {
    width: 100%;
    text-align: left;
    background: transparent;
    border: 0;
    color: var(--cb-text-muted);
    font-family: var(--cb-font-sans);
    font-size: 0.92rem;
    font-weight: 500;
    padding: 0.7rem 0.85rem;
    border-radius: var(--cb-radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.7rem;
    transition: all 0.18s ease;
    margin-bottom: 2px;
    position: relative;
}

.cb-sector-btn i {
    font-size: 1.05rem;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
    color: var(--cb-text-dim);
    transition: color 0.18s;
}

.cb-sector-btn .count {
    margin-left: auto;
    font-family: var(--cb-font-mono);
    font-size: 0.72rem;
    color: var(--cb-text-dim);
    background: var(--cb-bg-subtle);
    padding: 1px 8px;
    border-radius: 99px;
    border: 1px solid var(--cb-border);
    transition: all 0.18s;
}

.cb-sector-btn:hover {
    background: var(--cb-bg-card);
    color: var(--cb-text);
}

.cb-sector-btn:hover i { color: var(--cb-text-muted); }

.cb-sector-btn.active {
    background: var(--cb-accent-soft);
    color: var(--cb-accent);
    font-weight: 600;
}

.cb-sector-btn.active i { color: var(--cb-accent); }

.cb-sector-btn.active .count {
    background: var(--cb-accent);
    color: #fff;
    border-color: var(--cb-accent);
}

.cb-sector-btn.active::before {
    content: '';
    position: absolute;
    left: -1rem;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 18px;
    background: var(--cb-accent);
    border-radius: 0 3px 3px 0;
}

/* CTA card in sidebar */
.cb-ref-cta-card {
    background: linear-gradient(155deg, var(--cb-bg-elevated) 0%, var(--cb-bg-card) 100%);
    border: 1px solid var(--cb-border);
    border-radius: var(--cb-radius-md);
    padding: 1.25rem;
    text-align: left;
    position: relative;
    overflow: hidden;
}

.cb-ref-cta-card::before {
    content: '';
    position: absolute;
    top: -40px;
    right: -40px;
    width: 120px;
    height: 120px;
    background: radial-gradient(circle, var(--cb-accent-soft), transparent 70%);
    pointer-events: none;
}

.cb-ref-cta-card > * { position: relative; }

.cb-ref-cta-card h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
    color: var(--cb-text);
    letter-spacing: -0.015em;
}

.cb-ref-cta-card p {
    font-size: 0.82rem;
    color: var(--cb-text-muted);
    margin: 0 0 1rem;
    line-height: 1.5;
}

/* ==========================================================================
   CONTENT — toolbar + grid
   ========================================================================== */

.cb-ref-content { min-width: 0; }

.cb-ref-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.75rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--cb-border);
}

.cb-ref-toolbar h2 {
    font-size: 1.4rem;
    font-weight: 600;
    margin: 0;
    color: var(--cb-text);
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 0.7rem;
}

.cb-ref-toolbar h2 .count {
    font-family: var(--cb-font-mono);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--cb-text-dim);
    background: var(--cb-bg-subtle);
    border: 1px solid var(--cb-border);
    padding: 2px 10px;
    border-radius: 99px;
}

.cb-ref-search {
    position: relative;
    width: 260px;
    max-width: 100%;
}

.cb-ref-search input {
    width: 100%;
    padding: 0.55rem 0.85rem 0.55rem 2.3rem;
    background: var(--cb-bg-card);
    border: 1px solid var(--cb-border);
    border-radius: var(--cb-radius-sm);
    color: var(--cb-text);
    font-size: 0.88rem;
    transition: border-color 0.2s;
    font-family: var(--cb-font-sans);
}

.cb-ref-search input::placeholder { color: var(--cb-text-dim); }

.cb-ref-search input:focus {
    outline: none;
    border-color: var(--cb-accent);
    box-shadow: 0 0 0 3px var(--cb-accent-soft);
}

.cb-ref-search i {
    position: absolute;
    left: 0.85rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--cb-text-dim);
    font-size: 0.9rem;
}

/* ==========================================================================
   LOGO GRID
   ========================================================================== */

.cb-logo-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    border: 1px solid var(--cb-border);
    border-radius: var(--cb-radius-lg);
    overflow: hidden;
    background: var(--cb-bg-card);
    box-shadow: var(--cb-shadow-sm);
}

@media (min-width: 1400px) {
    .cb-logo-grid { grid-template-columns: repeat(6, 1fr); }
}

@media (max-width: 1199px) {
    .cb-logo-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    .cb-logo-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Each cell */
.cb-logo-cell {
    position: relative;
    aspect-ratio: 1 / 0.85;
    display: grid;
    place-items: center;
    padding: 1.5rem;
    border-right: 1px solid var(--cb-border);
    border-bottom: 1px solid var(--cb-border);
    background: var(--cb-bg-card);
    overflow: hidden;
    cursor: pointer;
    transition: background 0.3s ease;
}

/* Sağ kenardaki cell border'larını kaldır */
.cb-logo-grid > .cb-logo-cell:nth-child(4n) { border-right: 0; }
@media (min-width: 1400px) {
    .cb-logo-grid > .cb-logo-cell:nth-child(4n) { border-right: 1px solid var(--cb-border); }
    .cb-logo-grid > .cb-logo-cell:nth-child(6n) { border-right: 0; }
}
@media (max-width: 1199px) {
    .cb-logo-grid > .cb-logo-cell:nth-child(4n) { border-right: 1px solid var(--cb-border); }
    .cb-logo-grid > .cb-logo-cell:nth-child(3n) { border-right: 0; }
}
@media (max-width: 768px) {
    .cb-logo-grid > .cb-logo-cell:nth-child(3n) { border-right: 1px solid var(--cb-border); }
    .cb-logo-grid > .cb-logo-cell:nth-child(2n) { border-right: 0; }
}

/* Subtle accent corner */
.cb-logo-cell::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 12px 12px 0 0;
    border-color: var(--cb-accent) transparent transparent transparent;
    opacity: 0;
    transform: translate(-100%, -100%);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.cb-logo-cell:hover::before {
    opacity: 0.6;
    transform: translate(0, 0);
}

/* Logo wrapper */
.cb-logo-img {
    width: 100%;
    max-width: 160px;
    height: auto;
    display: block;
    filter: grayscale(100%) opacity(0.55);
    transition: filter 0.4s ease, transform 0.4s ease;
    position: relative;
    z-index: 1;
}

.cb-logo-cell:hover .cb-logo-img {
    filter: grayscale(0%) opacity(1);
    transform: scale(1.05);
}

/* Hover overlay (firma adı + sektör) */
.cb-logo-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 0%, var(--cb-bg-elevated) 70%, var(--cb-bg-elevated) 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 1rem 1.25rem;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: 2;
}

.cb-logo-cell:hover .cb-logo-overlay { opacity: 1; }

.cb-logo-name {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--cb-text);
    letter-spacing: -0.01em;
    line-height: 1.2;
    transform: translateY(8px);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.cb-logo-cell:hover .cb-logo-name { transform: translateY(0); }

.cb-logo-sector {
    font-family: var(--cb-font-mono);
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--cb-accent);
    margin-top: 0.2rem;
    transform: translateY(8px);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1) 0.05s;
}

.cb-logo-cell:hover .cb-logo-sector {
    transform: translateY(0);
    opacity: 1;
}

/* Background sweep on hover */
.cb-logo-cell::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at var(--mx, 50%) var(--my, 50%), var(--cb-accent-soft) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: 0;
}

.cb-logo-cell:hover::after { opacity: 1; }

/* Hidden state for filter */
.cb-logo-cell.hidden {
    display: none;
}

/* ==========================================================================
   EMPTY STATE
   ========================================================================== */

.cb-ref-empty {
    text-align: center;
    padding: 4rem 1rem;
    color: var(--cb-text-muted);
    border: 1px dashed var(--cb-border);
    border-radius: var(--cb-radius-lg);
    display: none;
}

.cb-ref-empty.show { display: block; }

.cb-ref-empty i {
    font-size: 2.5rem;
    color: var(--cb-text-dim);
    margin-bottom: 1rem;
    display: block;
}

.cb-ref-empty h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
    color: var(--cb-text);
}

.cb-ref-empty p { margin: 0; font-size: 0.92rem; }

/* ==========================================================================
   CTA BAND (sayfa altında)
   ========================================================================== */

.cb-ref-cta-band {
    background: linear-gradient(135deg, var(--cb-bg-elevated) 0%, var(--cb-bg-subtle) 100%);
    border: 1px solid var(--cb-border-strong);
    border-radius: var(--cb-radius-xl);
    padding: 3.5rem 3rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    margin-bottom: 4rem;
}

.cb-ref-cta-band::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 50%, var(--cb-accent-soft), transparent 50%),
        radial-gradient(circle at 80% 50%, var(--cb-accent-soft), transparent 50%);
    pointer-events: none;
}

.cb-ref-cta-band > * { position: relative; }

.cb-ref-cta-band h2 {
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 600;
    letter-spacing: -0.025em;
    margin: 0.85rem 0 0.85rem;
    color: var(--cb-text);
}

.cb-ref-cta-band h2 em {
    font-family: var(--cb-font-serif);
    font-style: italic;
    color: var(--cb-accent);
    font-weight: 400;
}

.cb-ref-cta-band p {
    color: var(--cb-text-muted);
    font-size: 1.02rem;
    max-width: 540px;
    margin: 0 auto 1.75rem;
}

@media (max-width: 768px) {
    .cb-ref-cta-band { padding: 2.5rem 1.5rem; }
}