/* TEMEL DEĞİŞKENLER VE RENKLER */
:root {
    --bg-main: #f8fafc;
    --white: #ffffff;
    --primary: #2563eb; /* Ana mavi */
    --primary-hover: #1d4ed8;
    --text-dark: #0f172a;
    --text-gray: #64748b;
    --accent: #10b981; /* Başarı yeşili */
    --border-color: #e2e8f0;
}

/* SIFIRLAMA VE GENEL AYARLAR */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

html {
    scroll-behavior: smooth; /* Menüye tıklayınca yumuşak kayma */
}

body {
    background-color: var(--bg-main);
    color: var(--text-dark);
    line-height: 1.7;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    transition: all 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* BUTONLAR */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.3s;
    font-size: 15px;
    border: none;
    gap: 8px;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.3);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-dark);
}

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

/* HEADER (ÜST MENÜ) */
header {
    background-color: var(--white);
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

header.scrolled {
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    padding: 15px 0;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: 800;
    color: var(--text-dark);
    letter-spacing: -0.5px;
}

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

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    color: var(--text-gray);
    font-weight: 500;
    font-size: 15px;
}

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

/* ANA GİRİŞ (HERO) */
.hero {
    padding: 80px 0 100px;
    background: linear-gradient(180deg, var(--white) 0%, var(--bg-main) 100%);
    text-align: center;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background-color: #eff6ff;
    color: var(--primary);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--text-dark);
    letter-spacing: -1px;
}

.hero h1 span {
    color: var(--primary);
}

.hero p {
    font-size: 18px;
    color: var(--text-gray);
    max-width: 700px;
    margin: 0 auto 40px;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
}

/* İÇERİK BÖLÜMLERİ */
.section-block {
    padding: 100px 0;
}

.section-block:nth-child(even) {
    background-color: var(--white);
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.content-grid.reverse .text-content {
    order: 2;
}

.content-grid.reverse .visual-content {
    order: 1;
}

.text-content h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.3;
}

.text-content p {
    font-size: 16px;
    color: var(--text-gray);
    margin-bottom: 30px;
}

.feature-list {
    list-style: none;
    margin-bottom: 30px;
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
    font-size: 15px;
    color: var(--text-dark);
    font-weight: 500;
}

.feature-list i {
    color: var(--accent);
    font-size: 18px;
    margin-top: 3px;
}

/* GÖRSEL ALANLARI (Mockup Kutuları) */
.visual-box {
    background-color: #f1f5f9;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

.visual-box:hover {
    transform: translateY(-5px);
}

.visual-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 12px;
    background: #e2e8f0;
}

.visual-icon {
    font-size: 80px;
    color: var(--primary);
    opacity: 0.2;
}

.visual-label {
    position: absolute;
    bottom: 20px;
    left: 20px;
    background: var(--white);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

/* MOBİL UYUMLULUK (Responsive) */
@media (max-width: 992px) {
    .content-grid {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .content-grid.reverse .text-content, 
    .content-grid.reverse .visual-content {
        order: unset;
    }
    
    .feature-list li {
        justify-content: center;
        text-align: left;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .nav-links {
        display: none; /* Mobilde hamburger menü yapılana kadar gizli */
    }
    
    .hero-actions {
        flex-direction: column;
        padding: 0 20px;
    }
} /* <-- ESKİ KODUN BURADA KAPANMASI GEREKİYORDU */

/* İLETİŞİM FORMU STİLLERİ */
.contact-form {
    background-color: var(--white);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    color: var(--text-dark);
    background-color: var(--bg-main);
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background-color: var(--white);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
}

/* Form mobil uyumluluk ayarı EN ALTTA OLMALI */
@media (max-width: 992px) {
    .contact-form { padding: 25px; }
}