:root {
    --anthracite-dark: #0f1012;
    --anthracite: #1a1c20;
    --anthracite-light: #2a2d34;
    --gold: #D4AF37;
    --gold-light: #F3E5AB;
    --gold-gradient: linear-gradient(135deg, #BF953F, #FCF6BA, #B38728, #FBF5B7, #AA771C);
    --text-light: #e0e0e0;
    --text-muted: #888;
}

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

body {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--anthracite-dark);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

/* --- HEADER & NAVIGATION --- */
header {
    background-color: rgba(15, 16, 18, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid rgba(212, 175, 55, 0.2);
    padding: 20px 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: 'Cinzel', serif;
    font-size: 28px;
    color: var(--gold);
    text-decoration: none;
    font-weight: 700;
    letter-spacing: 3px;
}

.logo span {
    color: #fff;
    font-family: 'Montserrat', sans-serif;
    font-size: 12px;
    font-weight: 300;
    letter-spacing: 5px;
    display: block;
    margin-top: -5px;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
}

nav ul li a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color 0.3s ease;
    cursor: pointer;
    padding-bottom: 5px;
}

nav ul li a:hover, nav ul li a.active {
    color: var(--gold);
    border-bottom: 2px solid var(--gold);
}

/* --- PAGE ROUTING SYSTEM --- */
.page-content {
    display: none;
    min-height: 100vh;
    padding-top: 100px;
    animation: fadeIn 0.6s ease forwards;
}

.page-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- HERO SECTION --- */
.hero {
    height: calc(100vh - 100px);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(rgba(15, 16, 18, 0.8), rgba(15, 16, 18, 0.9)), url('https://images.unsplash.com/photo-1600596542815-ffad4c1539a9?ixlib=rb-4.0.3&auto=format&fit=crop&w=2000&q=80') center/cover;
}

.hero-content h1 {
    font-family: 'Cinzel', serif;
    font-size: 50px;
    color: var(--gold);
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.hero-content p {
    font-size: 18px;
    max-width: 800px;
    margin: 0 auto 40px auto;
    color: var(--text-light);
}

.btn {
    padding: 15px 40px;
    background: var(--gold-gradient);
    color: #000;
    text-decoration: none;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 3px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: none;
    cursor: pointer;
    display: inline-block;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(212, 175, 55, 0.3);
}

/* --- COMMON SECTIONS --- */
.section-header {
    text-align: center;
    margin-bottom: 60px;
    padding-top: 40px;
}

.section-header h2 {
    font-family: 'Cinzel', serif;
    font-size: 36px;
    color: var(--gold);
    margin-bottom: 15px;
}

.section-header .divider {
    width: 80px;
    height: 3px;
    background: var(--gold);
    margin: 0 auto;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px 80px 20px;
}

/* --- KURUMSAL --- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border: 2px solid var(--gold);
    border-radius: 5px;
    box-shadow: -15px 15px 0px rgba(212, 175, 55, 0.2);
}

.about-text h3 {
    font-family: 'Cinzel', serif;
    font-size: 28px;
    color: #fff;
    margin-bottom: 20px;
}

.about-text p {
    margin-bottom: 20px;
    color: #bbb;
    text-align: justify;
}

/* --- HİZMETLERİMİZ --- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background-color: var(--anthracite);
    padding: 40px 30px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
    text-align: center;
}

.service-card:hover {
    border-bottom: 3px solid var(--gold);
    transform: translateY(-10px);
    background-color: var(--anthracite-light);
}

.service-card i {
    font-size: 45px;
    color: var(--gold);
    margin-bottom: 25px;
}

.service-card h3 {
    font-size: 20px;
    color: #fff;
    margin-bottom: 15px;
    font-family: 'Cinzel', serif;
}

.service-card p {
    color: #aaa;
    font-size: 14px;
}

/* --- PROJELERİMİZ --- */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.project-card {
    position: relative;
    overflow: hidden;
    border-radius: 5px;
}

.project-card img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.project-card:hover img {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(transparent, rgba(15, 16, 18, 0.95));
    padding: 30px 20px 20px 20px;
    transform: translateY(20px);
    opacity: 0.9;
    transition: all 0.3s ease;
}

.project-card:hover .project-overlay {
    transform: translateY(0);
    opacity: 1;
}

.project-overlay h3 {
    color: var(--gold);
    font-family: 'Cinzel', serif;
    font-size: 22px;
    margin-bottom: 5px;
}

.project-overlay p {
    color: #fff;
    font-size: 14px;
}

/* --- İLETİŞİM --- */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info-box {
    background-color: var(--anthracite);
    padding: 40px;
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: 5px;
}

.info-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
}

.info-item i {
    font-size: 24px;
    color: var(--gold);
    margin-right: 20px;
    margin-top: 5px;
}

.info-item h4 {
    color: #fff;
    margin-bottom: 5px;
    font-size: 16px;
}

.info-item p {
    color: #aaa;
    font-size: 14px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 15px;
    background-color: var(--anthracite);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #fff;
    font-family: 'Montserrat', sans-serif;
    border-radius: 3px;
}

.contact-form input:focus, .contact-form textarea:focus {
    outline: none;
    border-color: var(--gold);
}

/* --- FOOTER --- */
footer {
    background-color: #050505;
    text-align: center;
    padding: 30px;
    border-top: 1px solid rgba(212, 175, 55, 0.2);
    color: #666;
    font-size: 14px;
}

/* --- MOBİL UYUMLULUK (RESPONSIVE) --- */
@media (max-width: 768px) {
    header {
        padding: 15px 20px;
        flex-direction: column;
        gap: 15px;
    }
    nav ul {
        gap: 15px;
    }
    nav ul li a {
        font-size: 12px;
    }
    .hero-content h1 {
        font-size: 32px;
    }
    .about-grid, .services-grid, .projects-grid, .contact-wrapper {
        grid-template-columns: 1fr;
    }
}