:root {
    --ad-nh: 70px;
    --ad-bg: #000;
    --ad-border: rgba(255, 255, 255, 0.1);
    --ad-txt: #fff;
    --ad-muted: rgba(255, 255, 255, 0.4);
}

body { 
    padding-top: var(--ad-nh); 
    margin: 0; 
    font-family: -apple-system, system-ui, sans-serif; 
    background: #000; 
    color: #fff; 
}

/* NAVBAR */
.ad-navbar {
    position: fixed; 
    top: 0; 
    left: 0; 
    right: 0; 
    height: var(--ad-nh);
    background: #000; 
    border-bottom: 1px solid var(--ad-border);
    display: flex; 
    align-items: center; 
    justify-content: space-between;
    padding: 0 40px; 
    z-index: 3000;
}

.ad-logo { 
    display: flex; 
    align-items: center; 
    gap: 12px; 
    text-decoration: none !important; 
    color: #fff !important; 
    font-weight: 700; 
    font-size: 18px; 
    transition: opacity 0.3s ease;
}

.ad-logo:hover {
    opacity: 0.8;
}

.ad-logo img { 
    height: 30px; 
    width: auto;
}

.ad-actions { 
    display: flex; 
    align-items: center; 
    gap: 15px; 
}

.ad-btn-primary { 
    background: #fff; 
    color: #000 !important; 
    padding: 10px 22px; 
    border-radius: 40px; 
    font-size: 14px; 
    font-weight: 600; 
    text-decoration: none !important; 
    transition: all 0.3s ease;
    cursor: pointer;
}

.ad-btn-primary:hover {
    background: #f0f0f0;
    transform: translateY(-2px);
}

.ad-menu-toggle { 
    background: transparent; 
    border: 1px solid var(--ad-border); 
    color: #fff; 
    padding: 9px 20px; 
    border-radius: 40px; 
    display: flex; 
    align-items: center; 
    gap: 10px; 
    cursor: pointer; 
    font-weight: 600; 
    transition: all 0.3s ease;
}

.ad-menu-toggle:hover {
    border-color: var(--ad-txt);
}

.ad-menu-icon { 
    width: 14px; 
    height: 14px; 
    transition: transform 0.3s ease; 
}

.ad-menu-toggle.is-open .ad-menu-icon { 
    transform: rotate(180deg); 
}

/* MEGA MENU */
.ad-mega-overlay { 
    position: fixed; 
    top: var(--ad-nh); 
    left: 0; 
    right: 0; 
    bottom: 0; 
    background: #000; 
    z-index: 2500; 
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    overflow-y: auto;
}

.ad-mega-overlay.active { 
    opacity: 1;
    visibility: visible;
}

.ad-mega-container { 
    max-width: 1500px; 
    margin: 0 auto; 
    padding: 40px; 
    min-height: 100%;
    display: flex;
    flex-direction: column;
}

/* GRID DURUMLARI (Genişleme Mantığı) */
.ad-mega-grid { 
    display: grid; 
    flex: 1;
    gap: 0; 
    transition: grid-template-columns 0.4s cubic-bezier(0.4, 0, 0.2, 1); 
}

.ad-mega-grid.state-0 { 
    grid-template-columns: 1fr 0fr 0fr 3fr; 
}

.ad-mega-grid.state-1 { 
    grid-template-columns: 1fr 1.2fr 0fr 2fr; 
}

.ad-mega-grid.state-2 { 
    grid-template-columns: 1fr 1fr 1.2fr 1.5fr; 
}

.ad-col { 
    padding: 0 25px; 
    border-right: 1px solid var(--ad-border); 
    overflow: hidden; 
    opacity: 0; 
    transition: opacity 0.3s ease 0.1s, max-width 0.3s ease;
    pointer-events: none;
    max-width: 100%;
}

.ad-col.active { 
    opacity: 1; 
    pointer-events: auto; 
}

.ad-col:last-child { 
    border-right: none; 
}

.ad-col-label { 
    font-size: 11px; 
    text-transform: uppercase; 
    color: var(--ad-muted); 
    letter-spacing: 1.5px; 
    margin-bottom: 25px; 
    font-weight: 700; 
}

.ad-nav-list { 
    display: flex; 
    flex-direction: column; 
    gap: 4px; 
}

.ad-nav-item { 
    color: var(--ad-muted); 
    text-decoration: none !important; 
    font-size: 17px; 
    padding: 12px 0; 
    cursor: pointer; 
    transition: 0.2s; 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    overflow: hidden;
    text-overflow: ellipsis;
}

.ad-nav-item:hover, 
.ad-nav-item.active { 
    color: #fff; 
}

.ad-nav-item.active::after { 
    content: '→'; 
    font-size: 14px; 
    opacity: 0.5; 
    margin-left: 10px;
    flex-shrink: 0;
}

/* GÖRSEL ALAN */
.ad-visual-block {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.ad-img-frame { 
    width: 100%; 
    height: 260px; 
    border-radius: 12px; 
    overflow: hidden; 
    background: #111; 
    margin-bottom: 20px;
}

.ad-img-frame img { 
    width: 100%; 
    height: 100%; 
    object-fit: cover; 
    transition: 0.4s; 
}

.ad-extra-links {
    flex: 1;
    overflow-y: auto;
}

/* MOBİL */
.ad-mob-nav { 
    display: none; 
    align-items: center; 
    gap: 15px; 
    margin-bottom: 25px; 
    padding-bottom: 15px; 
    border-bottom: 1px solid var(--ad-border); 
}

#adBackBtn { 
    background: none; 
    border: none; 
    color: #fff; 
    cursor: pointer; 
    font-size: 16px; 
    padding: 8px 16px;
    transition: all 0.2s ease;
    font-weight: 600;
}

#adBackBtn:hover {
    color: var(--ad-muted);
}

#adMobTitle {
    font-weight: 700;
    font-size: 18px;
    flex: 1;
}

@media (max-width: 992px) {
    .ad-navbar {
        padding: 0 20px;
    }

    .ad-mega-container { 
        padding: 20px; 
    }

    .ad-mega-grid { 
        display: block; 
    }

    .ad-col { 
        display: none; 
        width: 100%; 
        border: none; 
        padding: 0; 
        opacity: 1;
        pointer-events: auto;
    }

    .ad-col.mob-active { 
        display: block; 
    }

    .ad-mob-nav { 
        display: flex; 
    }

    .ad-nav-item { 
        font-size: 18px; 
        padding: 16px 0;
        border-bottom: 1px solid var(--ad-border); 
    }

    .ad-img-frame {
        height: 200px;
        margin-bottom: 20px;
    }

    .ad-col-label {
        margin-top: 20px;
    }

    .ad-logo span {
        display: none;
    }

    .ad-btn-primary {
        display: none;
    }
}

@media (max-width: 600px) {
    .ad-navbar {
        padding: 0 15px;
    }

    .ad-logo img {
        height: 24px;
    }

    .ad-menu-toggle {
        padding: 8px 15px;
        font-size: 12px;
    }

    .ad-nav-item {
        font-size: 16px;
        padding: 12px 0;
    }

    .ad-col-label {
        font-size: 10px;
    }

    .ad-img-frame {
        height: 160px;
    }
}