/* =========================================
   1. DEĞİŞKENLER & SIFIRLAMA
========================================= */
:root {
    --bg-color: #050505;
    --surface-color: #121212;
    --text-main: #f8f9fa;
    --text-muted: #adb5bd;
    --accent-color: #0d6efd;
    --accent-hover: #0b5ed7;
    --border-color: #212529;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

a {
    text-decoration: none;
    color: inherit;
}

/* =========================================
   2. ORTAK BİLEŞENLER (Butonlar vb.)
========================================= */
.btn-primary {
    background-color: var(--accent-color);
    color: #fff;
    padding: 10px 24px;
    border-radius: 6px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s ease;
    display: inline-block;
    text-align: center;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
}

.btn-outline {
    background-color: transparent;
    color: var(--text-main);
    padding: 10px 24px;
    border-radius: 6px;
    font-weight: 600;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: border-color 0.3s ease;
    display: inline-block;
}

.btn-outline:hover {
    border-color: var(--text-muted);
}

/* =========================================
   3. HEADER & NAVİGASYON
========================================= */
header {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 20px 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(5, 5, 5, 0.85);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.logo span {
    color: var(--accent-color);
    font-weight: 300;
}

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

.nav-links a {
    font-size: 0.9rem;
    font-weight: 600;
    transition: color 0.3s;
}

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

/* --- Hamburger Menü --- */
.hamburger {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
    z-index: 1001; /* Menü açıkken üstte kalması için */
}

.hamburger .bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-main);
    transition: all 0.3s ease-in-out;
    border-radius: 3px;
}

.mobile-btn { display: none; }

/* =========================================
   4. SAYFA BÖLÜMLERİ (Hero, Hizmetler vb.)
========================================= */
.hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 20px;
    background: radial-gradient(circle at top, #1a1d20 0%, #050505 60%);
}

.hero h1 {
    font-size: 3.8rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -1.5px;
}

.hero h1 span { color: var(--accent-color); }
.hero p { font-size: 1.2rem; color: var(--text-muted); max-width: 750px; margin-bottom: 40px; }
.hero-buttons { display: flex; gap: 15px; justify-content: center; }

.section-title { text-align: center; font-size: 2.5rem; margin-bottom: 15px; font-weight: 800; }
.section-subtitle { text-align: center; color: var(--text-muted); margin-bottom: 60px; max-width: 600px; margin-inline: auto; }
.features { padding: 100px 5%; background-color: var(--bg-color); }

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.card {
    background-color: var(--surface-color);
    padding: 40px 30px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: transform 0.3s, border-color 0.3s;
}

.card:hover { transform: translateY(-5px); border-color: var(--accent-color); }
.card h3 { font-size: 1.5rem; margin-bottom: 15px; color: #fff; }
.card p { color: var(--text-muted); font-size: 0.95rem; }

.tech-card { background: linear-gradient(145deg, var(--surface-color) 0%, #0a0a0a 100%); }
.tech-card strong { color: #fff; display: block; margin-bottom: 5px; }

.crm-banner {
    padding: 100px 5%;
    background-color: #0d1117;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}

.crm-content { max-width: 800px; margin: 0 auto; }
.crm-content h2 { font-size: 2.5rem; margin-bottom: 20px; font-weight: 800; }
.crm-content p { color: var(--text-muted); font-size: 1.1rem; margin-bottom: 40px; }

/* =========================================
   5. SIKÇA SORULAN SORULAR (SSS)
========================================= */
.faq-container { max-width: 800px; margin: 0 auto; }
.faq-item {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 20px;
    color: var(--text-main);
    font-size: 1.1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out;
    background-color: #0a0a0a;
}

.faq-answer-inner { padding: 0 20px 20px; }
.faq-answer p { margin: 0; color: var(--text-muted); font-size: 0.95rem; }

.faq-item.active .faq-answer {
    max-height: 500px;
}

/* =========================================
   6. İLETİŞİM SAYFASI & FORMLAR
========================================= */
.contact-hero { padding: 150px 20px 60px; text-align: center; background: radial-gradient(circle at top, #1a1d20 0%, #050505 100%); border-bottom: 1px solid var(--border-color); }
.contact-hero h1 { font-size: 3rem; font-weight: 800; margin-bottom: 15px; }
.contact-hero h1 span { color: var(--accent-color); }
.contact-hero p { color: var(--text-muted); max-width: 600px; margin: 0 auto; font-size: 1.1rem; }

.contact-info { padding: 60px 5%; }
.contact-box { background-color: var(--surface-color); padding: 40px 30px; border-radius: 12px; border: 1px solid var(--border-color); text-align: center; }
.contact-box .icon { font-size: 2.5rem; margin-bottom: 15px; }
.contact-box h3 { margin-bottom: 10px; font-size: 1.3rem; }
.contact-box p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 20px; }
.contact-link { display: block; font-size: 1.2rem; font-weight: 600; color: #fff; margin-bottom: 15px; transition: color 0.3s; }
.contact-link:hover { color: var(--accent-color); }
.contact-action { color: var(--accent-color); font-size: 0.9rem; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; }

.contact-form-section { padding: 40px 5% 100px; }
.form-container { max-width: 700px; margin: 0 auto; background-color: var(--surface-color); padding: 50px; border-radius: 12px; border: 1px solid var(--border-color); }
.form-container h2 { margin-bottom: 30px; font-size: 1.8rem; text-align: center; border-bottom: 1px solid var(--border-color); padding-bottom: 20px; }

.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-size: 0.9rem; font-weight: 600; color: var(--text-muted); }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 12px 15px; background-color: #000; border: 1px solid var(--border-color); border-radius: 6px; color: #fff; font-size: 1rem; transition: 0.3s; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--accent-color); background-color: #050505; }
.w-100 { width: 100%; font-size: 1.1rem; padding: 15px; margin-top: 10px; }

/* =========================================
   7. FOOTER
========================================= */
footer { padding: 40px 5%; text-align: center; color: var(--text-muted); font-size: 0.9rem; border-top: 1px solid var(--border-color); }

/* =========================================
   8. MOBİL UYUMLULUK (RESPONSIVE)
========================================= */

/* Hamburger Menü Animasyon Sınıfları (Masaüstü için gizli, mobilde aktif) */
.hamburger.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}
.hamburger.active .bar:nth-child(2) {
    opacity: 0;
}
.hamburger.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

@media (max-width: 768px) {
    /* Header & Menü */
    header { 
        padding: 15px 5%; 
        flex-direction: row; 
    }
    
    .hamburger { 
        display: flex; /* Mobilde hamburgeri göster */
    }

    .desktop-btn {
        display: none; /* Masaüstü butonunu mobilde gizle ki karmaşa yaratmasın */
    }

    .mobile-btn {
        display: block; /* Menü içindeki butonu mobilde göster */
        width: 90%;
        margin: 15px auto 0;
        text-align: center;
    }

    .nav-links { 
        display: flex; 
        position: absolute;
        top: -400px; /* Başlangıçta ekranın üstünde gizli */
        left: 0;
        width: 100%;
        background-color: #050505;
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        padding: 20px 0;
        gap: 20px;
        text-align: center;
        transition: top 0.4s ease-in-out; /* Şık bir kayma efekti eklendi */
        z-index: -1; /* Header'ın arkasından gelmesi için */
        box-shadow: 0 10px 30px rgba(0,0,0,0.8);
    }

    .nav-links.active {
        top: 100%; /* Sınıf eklenince aşağı kayar */
    }

    .nav-links a {
        font-size: 1.1rem; /* Mobilde tıklaması kolay olsun diye büyütüldü */
        padding: 10px 0;
    }

    /* Hero Bölümü (Ana Sayfa) */
    .hero { height: auto; min-height: 100vh; padding: 120px 20px 60px; }
    @supports (-webkit-touch-callout: none) { .hero { min-height: -webkit-fill-available; } }
    .hero h1 { font-size: 2.2rem; margin-bottom: 15px; letter-spacing: -0.5px; } 
    .hero p { font-size: 1rem; margin-bottom: 30px; }
    .hero-buttons { flex-direction: column; width: 100%; gap: 15px; }
    .hero-buttons a { width: 100%; text-align: center; }

    /* Sayfa Bölümleri ve Grid */
    .features { padding: 60px 5%; }
    .section-title { font-size: 1.8rem; }
    .section-subtitle { font-size: 0.95rem; margin-bottom: 40px; }
    
    .grid-3 { grid-template-columns: 1fr; gap: 20px; }
    .card { padding: 30px 20px; text-align: center; } /* Kart içerikleri mobilde ortalandı */

    /* CRM ve SSS */
    .crm-banner { padding: 60px 5%; }
    .crm-content h2 { font-size: 1.8rem; }
    .crm-content p { font-size: 1rem; }
    .crm-banner .btn-primary { width: 100%; padding: 15px; }
    .faq-question { font-size: 1rem; padding: 15px; }

    /* İletişim Formu ve Hero */
    .contact-hero { padding: 120px 20px 40px; }
    .contact-hero h1 { font-size: 2.2rem; }
    .contact-info { padding: 40px 5%; }
    .form-container { padding: 30px 20px; }
    .form-container h2 { font-size: 1.5rem; }
    
    /* Mobilde dokunmatik alan iyileştirmeleri (Inputs) */
    .form-group input, .form-group select, .form-group textarea {
        padding: 15px; /* Mobilde parmakla dokunmak daha kolay olsun */
        font-size: 16px; /* iOS cihazlarda otomatik zoom yapmasını engeller */
    }
}




/* WhatsApp Sabit Buton Stilleri */
.whatsapp-float {
    position: fixed;
    width: 60px;
    height: 60px;
    bottom: 30px;
    right: 30px;
    background-color: #25d366;
    color: #FFF;
    border-radius: 50px;
    text-align: center;
    box-shadow: 2px 2px 15px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.whatsapp-float:hover {
    transform: scale(1.1) translateY(-5px);
    box-shadow: 2px 5px 20px rgba(37, 211, 102, 0.4);
}

.whatsapp-icon {
    width: 35px;
    height: 35px;
    fill: white;
}

/* Mobil cihazlar için boyutu biraz küçültelim */
@media (max-width: 768px) {
    .whatsapp-float {
        width: 50px;
        height: 50px;
        bottom: 20px;
        right: 20px;
    }
    .whatsapp-icon {
        width: 28px;
        height: 28px;
    }
}