/* === Renk Paleti ve Değişkenler === */
:root {
    --ana-bg: #080808;
    --kart-bg: #121212;
    --nav-bg: #1a1a1a;
    --metin-beyaz: #ffffff;
    --metin-gri: #a0a0a0;
    --kenarlik: #262626;
    --vurgu: #ffffff;
    --gecis: all 0.5s cubic-bezier(0.19, 1, 0.22, 1);
}

/* === Temel Ayarlar === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--ana-bg);
    color: var(--metin-beyaz);
    font-family: 'Inter', sans-serif;
    overflow-x: hidden;
    line-height: 1.6;
}

/* === Modern Header === */
header {
    position: fixed;
    top: 0;
    width: 100%;
    height: 70px;
    background-color: var(--nav-bg);
    border-bottom: 1px solid var(--kenarlik);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 5%;
    z-index: 1000;
    box-shadow: 0 4px 30px rgba(0,0,0,0.4);
}

.menu-toggle {
    cursor: pointer;
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 7px;
    z-index: 1003;
}

.menu-toggle span {
    width: 26px;
    height: 2px;
    background-color: var(--metin-beyaz);
    transition: var(--gecis);
    border-radius: 4px;
}

/* Menü açıkken hamburger ikonunun X olması */
.menu-toggle.active .line-1 { transform: translateY(9px) rotate(45deg); }
.menu-toggle.active .line-2 { opacity: 0; }
.menu-toggle.active .line-3 { transform: translateY(-9px) rotate(-45deg); }

.logo img {
    height: 35px;
    width: auto;
    object-fit: contain;
}

/* === Side Drawer (Yan Menü) === */
.drawer {
    position: fixed;
    top: 0;
    left: -100%;
    width: 300px;
    height: 100vh;
    background-color: #111111;
    z-index: 1002;
    padding: 100px 30px;
    transition: var(--gecis);
    border-right: 1px solid var(--kenarlik);
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.drawer.open {
    left: 0;
}

.drawer-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.drawer-title {
    font-size: 11px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: #444;
    padding-bottom: 10px;
    border-bottom: 1px solid #222;
}

.drawer ul {
    list-style: none;
}

.drawer ul li {
    margin-bottom: 15px;
}

.drawer ul li a {
    text-decoration: none;
    color: var(--metin-beyaz);
    font-size: 20px;
    font-weight: 700;
    transition: var(--gecis);
    display: block;
    opacity: 0.7;
}

.drawer ul li a:hover {
    opacity: 1;
    transform: translateX(10px);
}

/* Karartma Katmanı */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.85);
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: var(--gecis);
    backdrop-filter: blur(5px);
}

.overlay.active {
    opacity: 1;
    visibility: visible;
}

/* === Ana İçerik === */
.main-content {
    margin-top: 70px;
    min-height: calc(100vh - 70px);
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* Hero Bölümü */
.hero-section {
    width: 100%;
    padding: 60px 5% 40px 5%;
    text-align: center;
}

.hero-section h1 {
    font-size: clamp(28px, 6vw, 48px);
    font-weight: 800;
    letter-spacing: -1.5px;
    margin-bottom: 10px;
    color: var(--metin-beyaz);
}

.hero-section p {
    color: var(--metin-gri);
    font-size: 16px;
    max-width: 500px;
    margin: 0 auto;
}

/* Vitrin Kartları (3'lü yapı) */
.thumbnail-grid {
    width: 100%;
    max-width: 1200px;
    padding: 20px 5% 60px 5%;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.thumbnail {
    position: relative;
    display: block;
    width: 100%;
    aspect-ratio: 4 / 5;
    border-radius: 24px;
    overflow: hidden;
    background-color: var(--kart-bg);
    border: 1px solid var(--kenarlik);
    transition: var(--gecis);
    text-decoration: none;
}

.thumbnail-image {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    transition: var(--gecis);
}

.thumbnail:hover {
    transform: translateY(-10px);
    border-color: #555;
    box-shadow: 0 20px 50px rgba(0,0,0,0.6);
}

.thumbnail:hover .thumbnail-image {
    transform: scale(1.05);
}

/* === Mobil Responsive === */
@media (max-width: 992px) {
    .thumbnail-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero-section { padding: 40px 5% 20px 5%; }
    .thumbnail-grid { 
        grid-template-columns: 1fr;
        gap: 15px; 
    }
    .thumbnail {
        aspect-ratio: 16 / 9;
    }
    .drawer { width: 100%; left: -100%; }
}