/* =========================================
   1. GENEL AYARLAR VE PREMİUM TİPOGRAFİ
   ========================================= */
:root {
    --primary: #3498db;
    --dark: #0f172a;
    --light-bg: #f8fafc;
    --glass: rgba(255, 255, 255, 0.7);
    --border: rgba(255, 255, 255, 0.3);
    --white: #ffffff;
}

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

body {
    font-family: 'Outfit', 'Poppins', sans-serif;
    line-height: 1.7;
    color: var(--dark);
    background-color: var(--light-bg);
    overflow-x: hidden;
}

.container { 
    width: 88%; 
    max-width: 1200px; 
    margin: 0 auto; 
}

/* =========================================
   2. NAVBAR (PC VE MOBİL DENGESİ)
   ========================================= */
header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(15px);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 2000;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    box-shadow: 0 4px 20px rgba(0,0,0,0.03);
    height: 80px;
    display: flex;
    align-items: center;
}

.nav-flex { 
    display: flex; 
    justify-content: space-between; /* Logo solda, Nav sağda */
    align-items: center; 
    width: 100%;
}

.logo { 
    font-weight: 800; 
    font-size: 1.8rem; 
    color: var(--dark);
    letter-spacing: -1px;
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 2101;
    cursor: pointer;
    text-decoration: none;
}

.logo span { color: var(--primary); }

/* MASAÜSTÜNDE HAMBURGERİ GİZLE */
.mobile-menu-icon {
    display: none; 
    font-size: 1.8rem;
    cursor: pointer;
    z-index: 2101;
    color: var(--dark);
}

/* Navigasyon Alanı Yerleşimi */
.nav-container {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: #475569;
    font-weight: 600;
    font-size: 0.95rem;
    transition: 0.3s;
}

.nav-links a:hover { color: var(--primary); }

.call-btn-main {
    background: var(--dark);
    color: white !important;
    padding: 10px 25px;
    border-radius: 50px;
    font-weight: 700;
    transition: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-decoration: none;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.call-btn-main:hover {
    background: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(52, 152, 219, 0.2);
}

/* =========================================
   3. HERO BÖLÜMÜ (İSTANBUL VURGUSU)
   ========================================= */
.hero-modern {
    padding: 180px 0 220px;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.85), rgba(52, 152, 219, 0.3)), 
                url('https://images.unsplash.com/photo-1497366754035-f200968a6e72?q=80&w=2000');
    background-size: cover;
    background-position: center;
    transition: background-position 0.1s ease-out;
    clip-path: polygon(0 0, 100% 0, 100% 85%, 0 100%);
    color: white;
    text-align: center;
    overflow: hidden;
}

.badge {
    background: rgba(52, 152, 219, 0.2);
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: 8px 18px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 25px;
    display: inline-block;
}

.hero-content h2 { 
    font-size: clamp(2.2rem, 8vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 25px;
    letter-spacing: -1px;
}

.hero-content h2 span { color: var(--primary); }

.hero-btns {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 30px;
}

.btn-main, .btn-outline {
    padding: 14px 35px;
    border-radius: 12px;
    font-weight: 700;
    text-decoration: none;
    transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-main { background: var(--primary); color: white !important; }
.btn-outline { border: 2px solid white; color: white; }
.btn-outline:hover { background: white; color: var(--dark); }

/* =========================================
   4. HİZMET KARTLARI
   ========================================= */
.section-title { 
    text-align: center; 
    font-size: clamp(2rem, 5vw, 2.8rem); 
    font-weight: 800; 
    margin-bottom: 50px;
    color: var(--dark);
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    padding-bottom: 100px;
}

.feature-card {
    background: white;
    padding: 50px 30px;
    border-radius: 25px;
    text-align: center;
    border: 1px solid rgba(0,0,0,0.03);
    box-shadow: 0 15px 35px rgba(0,0,0,0.03);
    transition: 0.4s;
    position: relative;
    overflow: hidden;
}

.icon-circle { font-size: 3.5rem; color: var(--primary); margin-bottom: 25px; }

/* =========================================
   5. KATALOG GERİ DÖNÜŞ VE ÜRÜNLER
   ========================================= */
.back-btn-wrapper {
    width: 100%;
    display: flex;
    justify-content: flex-start;
    margin-bottom: 30px;
}

.back-link {
    background: var(--white);
    color: var(--dark);
    border: 1px solid rgba(0,0,0,0.1);
    padding: 12px 25px;
    border-radius: 50px;
    font-weight: 700;
    cursor: pointer;
    transition: 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.back-link:hover {
    background: var(--dark);
    color: var(--white);
    transform: translateX(-5px);
}

.product-showcase {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    padding-bottom: 100px;
}

.glass-item {
    background: white;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transition: 0.4s;
}

.glass-item:hover { transform: translateY(-10px); }

.img-box-photo {
    height: 350px;
    overflow: hidden;
    position: relative;
}

.img-box-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: 0.6s ease;
}

.product-info { padding: 25px; }

/* =========================================
   6. MOBİL OPTİMİZASYONU
   ========================================= */
.whatsapp-float { 
    position: fixed; bottom: 30px; right: 30px; 
    background: #25d366; width: 60px; height: 60px; 
    border-radius: 50%; display: flex; justify-content: center; 
    align-items: center; font-size: 30px; color: white;
    z-index: 3000; box-shadow: 0 10px 25px rgba(37, 211, 102, 0.3);
}

@media (max-width: 992px) {
    .mobile-menu-icon { 
        display: block; 
    }

    .nav-container {
        display: none; 
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        justify-content: center;
        gap: 40px;
        transition: 0.5s cubic-bezier(0.77, 0.2, 0.05, 1);
        z-index: 2050;
    }

    .nav-container.mobile-active { 
        display: flex; 
        right: 0; 
    }

    .nav-links {
        flex-direction: column;
        align-items: center;
        gap: 30px;
    }

    .nav-links a { font-size: 1.5rem; }

    .hero-modern { padding: 140px 0; clip-path: none; }
    .hero-content h2 { font-size: 2.2rem; }
    .whatsapp-float { width: 50px; height: 50px; font-size: 24px; bottom: 20px; right: 20px; }
    
    .back-btn-wrapper { justify-content: center; } /* Mobilde butonu ortala */
}

@media (max-width: 480px) {
    .hero-btns { flex-direction: column; }
    .btn-main, .btn-outline { width: 100%; text-align: center; }
}