/* GENEL AYARLAR */
* { margin: 0; padding: 0; box-sizing: border-box; }
body, html { height: 100%; font-family: 'Inter', sans-serif; line-height: 1.6; }

/* KAPAK */
#landing-page {
    height: 100vh; display: flex; justify-content: center; align-items: center;
    background: radial-gradient(circle, #2d132c 0%, #190a19 100%);
    color: white; text-align: center; position: relative; overflow: hidden;
}
#landing-page::before {
    content: "\2708"; position: absolute; font-size: 600px; color: #6c5ce7;
    opacity: 0.18; transform: rotate(-35deg); z-index: 1;
}
.landing-content { position: relative; z-index: 2; }
.landing-title { font-size: 32px; font-weight: 800; margin-bottom: 20px; line-height: 1.2; }
.group-name-tag { font-size: 22px; color: #a29bfe; font-style: italic; border-top: 1px solid #444; border-bottom: 1px solid #444; padding: 10px 20px; display: inline-block; margin-bottom: 40px;}
.explore-btn { padding: 15px 40px; background: #6c5ce7; color: white; border: none; border-radius: 4px; cursor: pointer; font-weight: bold; transition: background 0.3s; }
.explore-btn:hover { background: #5649c0; }

/* ANA İÇERİK YAPISI */
#main-content { display: none; background: #fff; }
.report-header { background: #1f3a5f; color: white; padding: 50px 0; text-align: center; }
.report-header h1 { font-size: 2.5rem; margin-bottom: 10px; }
nav { margin-top: 20px; }
nav a { color: #fff; text-decoration: none; margin: 0 15px; font-size: 1rem; opacity: 0.8; transition: opacity 0.3s; }
nav a:hover { opacity: 1; text-decoration: underline; }

.container { width: 90%; max-width: 1100px; margin: auto; }
.section { padding: 60px 0; border-bottom: 1px solid #eee; }
.section h2 { color: #1f3a5f; font-size: 2rem; margin-bottom: 30px; border-left: 5px solid #6c5ce7; padding-left: 15px; }
.section p { color: #333; margin-bottom: 15px; text-align: justify; }

/* GÖRSEL VE YAZI DÜZENİ (GRID) */
.viz { 
    display: grid; 
    grid-template-columns: 1.3fr 1fr; 
    gap: 40px; 
    margin-bottom: 80px; 
    align-items: center; 
}

/* YENİ: İNTERAKTİF RESİM ALANI */
.img-container {
    position: relative;
    cursor: pointer;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    border: 1px solid #eee;
}

.img-container img {
    width: 100%;
    display: block;
    transition: transform 0.4s ease; /* Yumuşak büyüme efekti */
}

/* Resmin üzerine gelince büyümesi */
.img-container:hover img {
    transform: scale(1.03); 
}

/* Resmin üzerindeki 'Click to Expand' yazısı */
.overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(31, 58, 95, 0.8); /* Yarı saydam mavi */
    overflow: hidden;
    width: 100%;
    height: 0;
    transition: .5s ease;
    display: flex;
    justify-content: center;
    align-items: center;
}

.img-container:hover .overlay {
    height: 40px; /* Hover olunca yukarı çıkar */
}

.overlay p {
    color: white;
    font-size: 14px;
    margin: 0;
    font-weight: 600;
}

.viz-text h3 { color: #1f3a5f; font-size: 1.4rem; margin-bottom: 15px; }

/* MODAL (BÜYÜTÜLMÜŞ RESİM PENCERESİ) STİLLERİ */
.modal {
    display: none; 
    position: fixed; 
    z-index: 1000; 
    padding-top: 60px; 
    left: 0;
    top: 0;
    width: 100%; 
    height: 100%; 
    overflow: auto; 
    background-color: rgb(0,0,0); 
    background-color: rgba(0,0,0,0.9); /* Siyah arka plan */
}

.modal-content {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 1000px;
    border-radius: 5px;
    animation-name: zoom;
    animation-duration: 0.6s;
}

@keyframes zoom {
    from {transform:scale(0)} 
    to {transform:scale(1)}
}

.close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
    cursor: pointer;
}

.close:hover,
.close:focus {
    color: #bbb;
    text-decoration: none;
    cursor: pointer;
}

#caption {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 700px;
    text-align: center;
    color: #ccc;
    padding: 10px 0;
    height: 150px;
    font-size: 18px;
}

footer { background: #1f3a5f; color: white; text-align: center; padding: 30px; margin-top: 40px; font-size: 0.9rem; opacity: 0.9; }

/* MOBİL UYUMLULUK */
@media (max-width: 768px) {
    .viz { grid-template-columns: 1fr; gap: 20px; }
    .landing-title { font-size: 24px; }
    nav a { display: block; margin: 10px 0; }
    .modal-content { width: 95%; }
}