:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --accent: #10b981;
    --bg: #0f172a;
    --bg-secondary: #1e293b;
    --card-bg: #1e293b;
    --text: #f1f5f9;
    --text-secondary: #94a3b8;
    --border: #334155;
    --danger: #ef4444;
    --warning: #f59e0b;
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    padding: 0 20px;
}
.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}
.nav-logo { font-size: 1.2em; font-weight: 700; color: var(--text); text-decoration: none; }
.nav-logo span { color: var(--primary); }
.nav-links { display: flex; list-style: none; gap: 30px; }
.nav-links a { color: var(--text-secondary); text-decoration: none; font-size: 0.9em; transition: color 0.2s; }
.nav-links a:hover { color: var(--text); }
.nav-cta { background: var(--primary); color: white; padding: 8px 20px; border-radius: 8px; text-decoration: none; font-weight: 600; font-size: 0.9em; transition: background 0.2s; }
.nav-cta:hover { background: var(--primary-dark); }
.nav-toggle { display: none; background: none; border: none; color: var(--text); font-size: 1.5em; cursor: pointer; }

/* Language Switcher (Flags) */
.language-switcher {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: 24px;
    padding: 6px 12px;
    border: 1px solid rgba(255,255,255,.08);
    background: rgba(255,255,255,.03);
    border-radius: 999px;
}
.flag-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.25s ease;
    border: 2px solid transparent;
    background: rgba(255,255,255,.04);
    overflow: hidden;
}
.flag-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}
.flag-btn:hover {
    transform: translateY(-2px) scale(1.1);
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}
.flag-btn.active {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
    background: rgba(37, 99, 235, 0.1);
}

/* Hero */
.hero { padding: 140px 20px 80px; text-align: center; background: linear-gradient(135deg, var(--bg) 0%, #1a1a3e 50%, var(--bg) 100%); }
.hero-container { max-width: 900px; margin: 0 auto; }
.hero-badge { display: inline-block; background: rgba(37, 99, 235, 0.15); border: 1px solid rgba(37, 99, 235, 0.3); color: var(--primary); padding: 6px 16px; border-radius: 20px; font-size: 0.85em; margin-bottom: 24px; }
.hero h1 { font-size: 3em; font-weight: 800; line-height: 1.2; margin-bottom: 20px; }
.highlight { background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-subtitle { font-size: 1.15em; color: var(--text-secondary); max-width: 700px; margin: 0 auto 32px; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 60px; }
.hero-stats { display: flex; gap: 60px; justify-content: center; flex-wrap: wrap; }
.stat-number { font-size: 2.2em; font-weight: 800; color: var(--primary); }
.stat-label { font-size: 0.9em; color: var(--text-secondary); }

/* Buttons */
.btn { display: inline-block; padding: 12px 28px; border-radius: 10px; font-weight: 600; text-decoration: none; cursor: pointer; border: none; font-size: 1em; transition: all 0.2s; }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); }
.btn-outline { background: transparent; border: 2px solid var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-lg { padding: 14px 36px; font-size: 1.05em; }
.btn-block { display: block; text-align: center; }

/* Sections */
section { padding: 80px 20px; }
.section-container { max-width: 1200px; margin: 0 auto; }
.section-title { font-size: 2.2em; font-weight: 800; text-align: center; margin-bottom: 12px; }
.section-subtitle { text-align: center; color: var(--text-secondary); margin-bottom: 50px; font-size: 1.05em; }

/* Features */
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 24px; }
.feature-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 16px; padding: 32px; transition: transform 0.2s, border-color 0.2s; }
.feature-card:hover { transform: translateY(-4px); border-color: var(--primary); }
.feature-icon { font-size: 2.5em; margin-bottom: 16px; }
.feature-card h3 { font-size: 1.15em; margin-bottom: 10px; }
.feature-card p { color: var(--text-secondary); font-size: 0.95em; }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 40px; }
.step { text-align: center; padding: 30px; }
.step-number { width: 60px; height: 60px; background: var(--primary); color: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.5em; font-weight: 800; margin: 0 auto 20px; }
.step h3 { margin-bottom: 10px; }
.step p { color: var(--text-secondary); font-size: 0.95em; }

/* Pricing */
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; align-items: start; }
.pricing-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 16px; padding: 36px; text-align: center; position: relative; }
.pricing-card.featured { border-color: var(--primary); transform: scale(1.05); box-shadow: 0 0 40px rgba(37, 99, 235, 0.15); }
.featured-badge { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--primary); color: white; padding: 4px 16px; border-radius: 12px; font-size: 0.8em; font-weight: 600; }
.pricing-card h3 { font-size: 1.3em; margin-bottom: 16px; }
.price { font-size: 2.5em; font-weight: 800; color: var(--primary); margin-bottom: 24px; }
.price span { font-size: 0.4em; color: var(--text-secondary); }
.pricing-card ul { list-style: none; margin-bottom: 28px; text-align: left; }
.pricing-card li { padding: 10px 0; border-bottom: 1px solid var(--border); font-size: 0.95em; }
.pricing-card li.disabled { color: var(--text-secondary); text-decoration: line-through; }

/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { background: var(--card-bg); border: 1px solid var(--border); border-radius: 12px; margin-bottom: 12px; overflow: hidden; }
.faq-item h3 { padding: 18px 24px; cursor: pointer; font-size: 1em; font-weight: 600; transition: background 0.2s; }
.faq-item h3:hover { background: rgba(37, 99, 235, 0.1); }
.faq-item p { padding: 0 24px 18px; color: var(--text-secondary); font-size: 0.95em; display: none; }
.faq-item.active p { display: block; }

/* Download */
.download-box { background: var(--card-bg); border: 2px solid var(--primary); border-radius: 16px; padding: 40px; display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; max-width: 800px; margin: 0 auto; }
.download-info h3 { margin-bottom: 8px; }
.download-info p { color: var(--text-secondary); font-size: 0.9em; margin-bottom: 12px; }
.download-features { display: flex; gap: 20px; flex-wrap: wrap; }
.download-features span { color: var(--accent); font-size: 0.9em; font-weight: 600; }

/* ========================================= */
/* PROFESSIONAL CONTACT SECTION (FORM KALDIRILDI) */
/* ========================================= */
.contact-section {
    background: linear-gradient(180deg, var(--bg) 0%, var(--bg-secondary) 100%);
}

/* Kartları ortalamak ve genişletmek için düzenlendi */
.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 28px;
    transition: all 0.3s ease;
    text-align: center;
}
.contact-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.1);
}
.contact-card.whatsapp-card {
    background: linear-gradient(135deg, rgba(37, 211, 102, 0.1), rgba(18, 140, 65, 0.05));
    border-color: rgba(37, 211, 102, 0.3);
}
.contact-icon {
    font-size: 1.5em;
    margin-bottom: 12px;
    background: rgba(37, 99, 235, 0.1);
    width: 56px;
    height: 56px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
    margin-right: auto;
}
.contact-card h3 {
    font-size: 1.05em;
    margin-bottom: 8px;
    color: var(--text);
}
.contact-card p {
    color: var(--text-secondary);
    font-size: 0.9em;
    line-height: 1.6;
}
.contact-card a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s;
}
.contact-card a:hover {
    color: var(--accent);
}
.btn-whatsapp {
    display: inline-block;
    margin-top: 12px;
    background: #25D366;
    color: white;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.85em;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.2s;
}
.btn-whatsapp:hover {
    background: #128C7E;
}

/* Footer */
.footer { background: var(--bg-secondary); border-top: 1px solid var(--border); padding: 40px 20px; }
.footer-container { max-width: 1200px; margin: 0 auto; text-align: center; }
.footer-brand h3 { font-size: 1.2em; margin-bottom: 8px; }
.footer-brand span { color: var(--primary); }
.footer-brand p { color: var(--text-secondary); font-size: 0.9em; margin-bottom: 16px; }
.footer-links { display: flex; gap: 24px; justify-content: center; flex-wrap: wrap; margin-bottom: 20px; }
.footer-links a { color: var(--text-secondary); text-decoration: none; font-size: 0.9em; }
.footer-links a:hover { color: var(--text); }
.footer-copy { color: var(--text-secondary); font-size: 0.85em; }

/* WhatsApp Float */
.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    background: #25D366;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8em;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    transition: transform 0.2s;
    z-index: 999;
}
.whatsapp-float:hover { transform: scale(1.1); }

/* Responsive */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-links.active { display: flex; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--bg); padding: 20px; border-bottom: 1px solid var(--border); }
    .nav-toggle { display: block; }
    .nav-cta { display: none; }
    .hero h1 { font-size: 2em; }
    .hero-stats { gap: 30px; }
    .pricing-card.featured { transform: scale(1); }
    .download-box { flex-direction: column; text-align: center; }
    
    .language-switcher {
        width: 100%;
        justify-content: center;
        margin: 12px 0 0;
        padding: 10px;
    }
    
    /* Mobilde iletişim kartları tek sütun */
    .contact-info-grid {
        grid-template-columns: 1fr;
    }
}