* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f8f9fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.site-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-header h1 {
    font-size: 28px;
    font-weight: 600;
}

.site-header nav {
    display: flex;
    gap: 20px;
    align-items: center;
    flex-wrap: wrap;
}

.site-header nav > a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s;
    white-space: nowrap;
}

.site-header nav > a:hover {
    opacity: 0.8;
}

/* Dropdown Menu */
.dropdown-menu {
    position: relative;
    display: inline-block;
}

.dropdown-toggle {
    color: white !important;
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    cursor: pointer;
    white-space: nowrap;
    transition: opacity 0.3s;
}

.dropdown-toggle:hover {
    opacity: 0.8;
}

.dropdown-toggle svg {
    margin-left: 5px;
    display: inline-block;
    vertical-align: middle;
    transition: transform 0.3s ease;
}

.dropdown-menu:hover .dropdown-toggle svg {
    transform: rotate(180deg);
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%; /* Hakkımızda linkinin hemen altı, boşluk kalmasın */
    left: 0;
    background: white;
    min-width: 220px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
    border-radius: 8px;
    padding: 8px 0;
    z-index: 1000;
    opacity: 0;
    transform: translateY(0);
    transition: opacity 0.2s ease;
    pointer-events: none;
}

.dropdown-menu:hover .dropdown-content {
    display: block !important;
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.dropdown-content a {
    display: block;
    color: #333 !important;
    padding: 12px 20px;
    text-decoration: none;
    font-weight: 400;
    transition: background-color 0.2s ease, color 0.2s ease;
    border-left: 3px solid transparent;
}

.dropdown-content a:hover {
    background-color: #f8f9fa;
    color: #667eea !important;
    border-left-color: #667eea;
    opacity: 1;
}

.header-arama {
    position: relative;
    display: flex;
    align-items: center;
}

.header-arama input {
    padding: 8px 35px 8px 12px;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 20px;
    background: rgba(255,255,255,0.1);
    color: white;
    font-size: 14px;
    width: 200px;
    transition: all 0.3s;
}

.header-arama input::placeholder {
    color: rgba(255,255,255,0.7);
}

.header-arama input:focus {
    outline: none;
    border-color: rgba(255,255,255,0.6);
    background: rgba(255,255,255,0.15);
    width: 250px;
}

.header-arama button {
    position: absolute;
    right: 8px;
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 5px;
    display: flex;
    align-items: center;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.header-arama button:hover {
    opacity: 1;
}

/* Main Content */
main {
    padding: 40px 0;
    min-height: calc(100vh - 200px);
}

h2 {
    font-size: 32px;
    margin-bottom: 30px;
    color: #333;
}

h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #444;
}

/* Manşet Bölümü (Yeni Tasarım) */
.manset {
    background: white;
    border-radius: 18px;
    padding: 0;
    box-shadow: 0 18px 40px rgba(15,23,42,0.15);
    margin-bottom: 40px;
    overflow: hidden;
    position: relative;
}

/* Son Sayılar buton grubu */
.sayi-buton-grup {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 15px;
}

.btn-primary {
    background: #667eea;
}

.btn-primary:hover {
    background: #5568d3;
}

.btn-outline-primary,
.btn-outline-secondary {
    background: transparent;
    border: 1px solid rgba(0,0,0,0.1);
    color: #333;
}

.btn-outline-primary:hover {
    background: #667eea;
    color: #fff;
    border-color: #667eea;
}

.btn-outline-secondary:hover {
    background: #6c757d;
    color: #fff;
    border-color: #6c757d;
}

.tum-sayilar-link {
    text-align: center;
    margin-top: 30px;
}

.manset-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    min-height: 520px;
}

.manset-yeni {
    align-items: stretch;
}

/* Manşet sol dış sosyal medya ikonları */
.manset-sosyal {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 5;
}

.manset-sosyal-link {
    width: 38px;
    height: 38px;
    border-radius: 999px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    text-decoration: none;
    box-shadow: 0 6px 16px rgba(15,23,42,0.35);
    transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
    opacity: 0.9;
}

.manset-sosyal-link:hover {
    transform: translateX(3px);
    box-shadow: 0 10px 24px rgba(15,23,42,0.5);
    opacity: 1;
}

.manset-sosyal-link.twitter {
    background: #1DA1F2;
}

.manset-sosyal-link.linkedin {
    background: #0077B5;
}

.manset-sosyal-link.facebook {
    background: #1877F2;
}

.manset-sosyal-link.instagram {
    background: linear-gradient(45deg, #f09433 0%,#e6683c 25%,#dc2743 50%,#cc2366 75%,#bc1888 100%);
}

.manset-sosyal-link.bluesky {
    background: #00A8E8;
}

@media (max-width: 992px) {
    .manset-sosyal {
        display: none;
    }
}

.manset-sol {
    position: relative;
    background: radial-gradient(circle at top left, #eef2ff, #e5e7eb);
    display: flex;
    align-items: stretch;
    justify-content: center;
    padding: 32px;
}

.manset-kapak-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    max-width: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.manset-kapak-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    pointer-events: none;
    transform: translateX(40px);
    transition: opacity 0.35s ease, transform 0.35s ease;
}

.manset-kapak-slide.aktif {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(0);
}

.manset-kapak-slide img {
    width: auto;
    max-width: 100%;
    height: 100%;
    max-height: 520px;
    object-fit: contain;
    border-radius: 14px;
    box-shadow: 0 20px 40px rgba(15,23,42,0.45);
}

/* Ana Banner Alanı (4 sütun x 2 satır) */
.ana-bannner-alani {
    margin-top: 50px;
    margin-bottom: 40px;
    padding: 28px 26px 32px;
    background: linear-gradient(90deg, #e0e7ff 0%, #e5e7eb 100%);
    border-radius: 14px;
}

.banner-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
}

.banner-kutu {
    position: relative;
    border-radius: 12px;
    padding: 18px 18px 16px;
    background: #ffffff;
    color: #333;
    box-shadow: 0 6px 16px rgba(15,23,42,0.08);
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.banner-kutu::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top right, rgba(102,126,234,0.14), transparent 60%);
    opacity: 0.7;
    pointer-events: none;
}

.banner-kutu:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 24px rgba(15,23,42,0.18);
}

.banner-icerik {
    position: relative;
    z-index: 1;
}

.banner-ikon {
    font-size: 24px;
    margin-bottom: 8px;
}

.banner-baslik {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 4px;
}

.banner-alt-baslik {
    font-size: 13px;
    font-weight: 500;
    opacity: 0.9;
    margin-bottom: 4px;
}

.banner-aciklama {
    font-size: 12px;
    opacity: 0.85;
}

.banner-link {
    position: relative;
    z-index: 1;
    margin-top: 14px;
    padding-top: 10px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: #4f46e5;
    text-decoration: none;
    border-top: 1px solid rgba(148,163,184,0.5);
}

.banner-link .banner-ok {
    transition: transform 0.2s ease;
}

.banner-link:hover .banner-ok {
    transform: translateX(4px);
}

@media (max-width: 992px) {
    .banner-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 600px) {
    .banner-grid {
        grid-template-columns: repeat(1, minmax(0, 1fr));
    }
}

.manset-gorsel {
    /* eski stil kullanımdan kalktı */
}

.manset-placeholder {
    width: 100%;
    max-width: 380px;
    height: 520px;
    background: linear-gradient(135deg, rgba(255,255,255,0.12), rgba(148,163,184,0.18));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #111827;
    font-size: 40px;
    font-weight: 700;
}

/* Sağ taraf tipografi ve dikey navigasyon */
.manset-sag {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    padding: 48px 40px 48px 40px;
    gap: 32px;
}

.manset-metinler {
    position: relative;
    overflow: hidden;
}

.manset-metin-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.35s ease, transform 0.35s ease;
}

.manset-metin-slide.aktif {
    opacity: 1;
    transform: translateX(0);
}

.manset-dergi-baslik {
    font-size: 44px;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 14px;
    color: #111827;
}

.manset-dergi-alt {
    font-size: 20px;
    font-weight: 500;
    color: #4b5563;
    margin-bottom: 18px;
}

.manset-sayi-bilgi-yeni {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 18px;
}

.manset-sayi-bilgi-yeni .bilgi-item {
    padding: 6px 12px;
    border-radius: 999px;
    background: #eef2ff;
    color: #3730a3;
    font-size: 13px;
    font-weight: 500;
}

.manset-sayi-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 500;
    color: #4f46e5;
    text-decoration: none;
}

.manset-sayi-ok {
    transition: transform 0.2s ease;
}

.manset-sayi-link:hover .manset-sayi-ok {
    transform: translateX(4px);
}

.manset-makale-kisa-blok {
    margin-top: 18px;
}

.manset-makale-kisa-baslik {
    font-size: 13px;
    font-weight: 600;
    color: #6b7280;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.manset-makale-listesi-kisa {
    list-style: none;
    padding: 0;
    margin: 0;
}

.manset-makale-listesi-kisa li + li {
    margin-top: 4px;
}

.manset-makale-kisa-link {
    font-size: 13px;
    color: #111827;
    text-decoration: none;
}

.manset-makale-kisa-link:hover {
    color: #4f46e5;
}

.manset-dikey-nav {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-self: center;
}

.manset-nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 14px;
    border-radius: 999px;
    border: none;
    background: transparent;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.manset-nav-item:hover {
    background: rgba(79,70,229,0.08);
    transform: translateX(-2px);
}

.manset-nav-item.aktif {
    background: #4f46e5;
    color: #fff;
}

.manset-nav-num {
    width: 24px;
    height: 24px;
    border-radius: 999px;
    border: 1px solid rgba(148,163,184,0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
}

.manset-nav-item.aktif .manset-nav-num {
    border-color: rgba(255,255,255,0.85);
}

.manset-nav-text {
    font-size: 12px;
    font-weight: 500;
    color: #4b5563;
}

.manset-nav-item.aktif .manset-nav-text {
    color: #e5e7eb;
}

/* Son Sayılar */
.son-sayilar {
    background: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 30px;
}

.son-sayilar h2 {
    margin-bottom: 30px;
    color: #333;
    font-size: 32px;
    text-align: center;
}

/* Son Sayı */
.son-sayi {
    background: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 30px;
}

.sayi-header {
    display: flex;
    gap: 30px;
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 2px solid #e0e0e0;
}

.kapak-resim {
    flex-shrink: 0;
}

.kapak-resim img {
    width: 200px;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.sayi-bilgi h2 {
    margin-bottom: 10px;
    font-size: 36px;
}

.sayi-tarih {
    font-size: 18px;
    color: #666;
}

/* Makaleler */
.makaleler-listesi {
    margin-top: 30px;
}

.makale-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 20px;
}

.makale-kart {
    background: white;
    border-radius: 8px;
    padding: 25px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.makale-kart:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.makale-kart h4 {
    margin-bottom: 10px;
    font-size: 20px;
}

.makale-kart h4 a {
    color: #333;
    text-decoration: none;
    transition: color 0.3s;
}

.makale-kart h4 a:hover {
    color: #667eea;
}

.makale-yazar {
    color: #666;
    font-size: 14px;
    margin-bottom: 15px;
    font-weight: 500;
}

.makale-ozet {
    color: #555;
    margin-bottom: 20px;
    line-height: 1.8;
}

.makale-linkler {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* Sayılar Grid */
.sayilar-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 20px;
}

.sayi-kart {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.sayi-kart:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.sayi-kapak a {
    display: block;
    overflow: hidden;
    border-radius: 8px 8px 0 0;
}

.sayi-kapak img {
    transition: transform 0.3s;
}

.sayi-kart:hover .sayi-kapak img {
    transform: scale(1.05);
}

.sayi-kapak img {
    width: 100%;
    height: auto;
    display: block;
}

.sayi-icerik {
    padding: 20px;
}

.sayi-icerik h3 {
    margin-bottom: 10px;
    font-size: 22px;
}

.sayi-icerik .sayi-tarih {
    color: #666;
    margin-bottom: 10px;
}

.makale-sayisi {
    color: #888;
    font-size: 14px;
    margin-bottom: 15px;
}

/* Makale Detay */
.makale-detay {
    background: white;
    border-radius: 10px;
    padding: 40px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.makale-header {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #e0e0e0;
}

.sayi-link {
    display: inline-block;
    color: #667eea;
    text-decoration: none;
    font-size: 14px;
    margin-bottom: 10px;
    font-weight: 500;
}

.sayi-link:hover {
    text-decoration: underline;
}

.makale-header h1 {
    font-size: 36px;
    margin-bottom: 15px;
    color: #333;
}

.makale-header .makale-yazar {
    font-size: 18px;
    color: #666;
}

.makale-ozet,
.makale-icerik {
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid #e0e0e0;
}

.makale-ozet h3,
.makale-icerik h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #444;
}

.icerik-metin {
    line-height: 1.8;
    color: #555;
    font-size: 16px;
}

.makale-dosya {
    margin-bottom: 30px;
    text-align: center;
}

.makale-footer {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.sayi-detay-header {
    display: flex;
    gap: 30px;
    background: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 30px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    background: #667eea;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 500;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 14px;
}

.btn:hover {
    background: #5568d3;
    transform: translateY(-2px);
}

.btn-secondary {
    background: #6c757d;
}

.btn-secondary:hover {
    background: #5a6268;
}

.btn-large {
    padding: 15px 30px;
    font-size: 16px;
}

/* Boş Durum */
.bos-durum,
.bos-mesaj {
    text-align: center;
    padding: 60px 20px;
    color: #666;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* Footer */
.site-footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 30px 0;
    margin-top: 60px;
}

.site-footer p {
    margin: 0;
}

/* Pop-up (Duyuru Modal) */
.popup-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
}

.popup-modal {
    position: relative;
    max-width: 520px;
    width: 100%;
    background: #ffffff;
    border-radius: 18px;
    box-shadow: 0 24px 60px rgba(15, 23, 42, 0.45);
    overflow: hidden;
    animation: popup-fade-in 0.25s ease-out;
}

.popup-close {
    position: absolute;
    top: 10px;
    right: 12px;
    width: 32px;
    height: 32px;
    border-radius: 999px;
    border: none;
    background: rgba(15, 23, 42, 0.06);
    color: #111827;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease, transform 0.1s ease;
}

.popup-close:hover {
    background: rgba(15, 23, 42, 0.12);
    transform: translateY(-1px);
}

.popup-image img {
    width: 100%;
    height: auto;
    display: block;
}

.popup-content {
    padding: 22px 24px 24px;
}

.popup-content h2 {
    font-size: 22px;
    margin-bottom: 10px;
    color: #111827;
}

.popup-content p {
    font-size: 14px;
    color: #4b5563;
    margin-bottom: 16px;
    line-height: 1.7;
}

.popup-actions {
    display: flex;
    justify-content: flex-end;
}

.popup-actions .btn-primary {
    border-radius: 999px;
    padding-inline: 22px;
}

@keyframes popup-fade-in {
    from {
        opacity: 0;
        transform: translateY(10px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .site-header .container {
        flex-direction: column;
        gap: 15px;
    }

    .site-header nav {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .header-arama {
        width: 100%;
        max-width: 300px;
    }
    
    .header-arama input {
        width: 100% !important;
    }

    .manset-container {
        grid-template-columns: 1fr;
        min-height: auto;
    }

    .manset-gorsel {
        padding: 30px 20px;
    }

    .manset-gorsel img {
        max-width: 250px;
    }

    .manset-sayi-bilgi h2 {
        font-size: 32px;
    }

    .manset-makaleler {
        max-height: none;
        padding: 30px 20px;
    }

    .sayi-header,
    .sayi-detay-header {
        flex-direction: column;
    }

    .kapak-resim {
        text-align: center;
    }

    .kapak-resim img {
        width: 150px;
    }

    .makale-grid,
    .sayilar-grid {
        grid-template-columns: 1fr;
    }

    .makale-detay {
        padding: 20px;
    }

    .makale-header h1 {
        font-size: 28px;
    }
}