/* --- KUSURSUZ GLOBAL SaaS THEME MİMARİSİ --- */
        :root {
            /* Renk Paleti */
            --primary: #0ea5e9; 
            --primary-hover: #0284c7; 
            --accent: #4f46e5;
            --accent-hover: #4338ca;
            
            /* Arka Planlar */
            --bg-main: #ffffff; 
            --bg-secondary: #f8fafc; 
            --bg-card: #ffffff;
            
            /* Metin Renkleri */
            --text-heading: #0f172a; 
            --text-body: #475569; 
            --text-muted: #64748b;
            
            /* Kenarlıklar */
            --border-light: #f1f5f9;
            --border-main: #e2e8f0; 
            --border-focus: #cbd5e1;
            
            /* Efektler */
            --glass-bg: rgba(255, 255, 255, 0.8);
            --glass-border: rgba(255, 255, 255, 0.4);
            
            /* Katmanlı Premium Gölgeler */
            --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
            --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
            --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.05), 0 4px 6px -4px rgb(0 0 0 / 0.05);
            --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.05), 0 8px 10px -6px rgb(0 0 0 / 0.05);
            --shadow-glow: 0 0 40px -10px rgba(14, 165, 233, 0.25);
            
            /* Gradients */
            --gradient-primary: linear-gradient(135deg, #0ea5e9 0%, #4f46e5 100%);
            --gradient-text: linear-gradient(to right, #0ea5e9, #4f46e5);
        }

        * { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Plus Jakarta Sans', sans-serif; }
        
        body { 
            background-color: var(--bg-main); 
            color: var(--text-body); 
            line-height: 1.7; 
            overflow-x: hidden; 
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            position: relative;
        }

        /* Arka plan ızgara deseni (Premium detay) */
        body::before {
            content: '';
            position: absolute;
            top: 0; left: 0; width: 100%; height: 100vh;
            background-image: radial-gradient(var(--border-main) 1px, transparent 1px);
            background-size: 32px 32px;
            opacity: 0.4;
            z-index: -2;
            pointer-events: none;
        }

        a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
        ul { list-style: none; }
        .container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }

        /* Smooth Animations */
        @keyframes fadeUp { 
            from { opacity: 0; transform: translateY(40px); } 
            to { opacity: 1; transform: translateY(0); } 
        }
        @keyframes float { 
            0% { transform: translateY(0px); } 
            50% { transform: translateY(-20px); } 
            100% { transform: translateY(0px); } 
        }
        @keyframes pulseGlow {
            0% { opacity: 0.5; transform: scale(1); }
            50% { opacity: 0.8; transform: scale(1.05); }
            100% { opacity: 0.5; transform: scale(1); }
        }
        
        .animate-fade-up { animation: fadeUp 1s cubic-bezier(0.16, 1, 0.3, 1) forwards; }

        /* HEADER */
        header { 
            position: fixed; top: 0; width: 100%; 
            background: var(--glass-bg); 
            backdrop-filter: blur(20px) saturate(180%); 
            -webkit-backdrop-filter: blur(20px) saturate(180%);
            border-bottom: 1px solid rgba(226, 232, 240, 0.8); 
            z-index: 1000; 
            transition: all 0.3s ease;
        }
        
        .nav-wrapper { display: flex; justify-content: space-between; align-items: center; height: 80px; }
        
        .logo { 
            font-size: 1.5rem; font-weight: 800; color: var(--text-heading); 
            display: flex; align-items: center; gap: 8px; letter-spacing: -0.5px;
        }
        .logo span { background: var(--gradient-text); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        
        .nav-links { display: flex; gap: 40px; font-weight: 600; font-size: 0.95rem; color: var(--text-muted); }
        .nav-links a:hover { color: var(--text-heading); }
        
        .nav-actions { display: flex; align-items: center; gap: 24px; }
        
        .lang-select { 
            background: transparent; border: 1px solid var(--border-main); 
            color: var(--text-body); padding: 8px 12px; border-radius: 10px; 
            font-weight: 600; font-size: 0.85rem; cursor: pointer; outline: none; 
            transition: all 0.2s ease; appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
            background-repeat: no-repeat; background-position: right 10px center; padding-right: 32px;
        }
        .lang-select:hover { border-color: var(--primary); color: var(--text-heading); }
        
        .btn-login { font-weight: 600; font-size: 0.95rem; color: var(--text-heading); }
        .btn-login:hover { color: var(--primary); }
        
        .btn-primary { 
            background: var(--text-heading); color: #fff; 
            padding: 12px 24px; border-radius: 12px; font-weight: 600; font-size: 0.95rem;
            transition: all 0.3s ease; display: inline-flex; align-items: center; justify-content: center; gap: 8px;
        }
        .btn-primary:hover { 
            background: var(--gradient-primary); 
            transform: translateY(-2px); 
            box-shadow: 0 10px 20px -10px var(--accent); 
        }

        /* HERO */
        .hero { padding: 180px 0 120px 0; text-align: center; position: relative; overflow: hidden; }
        
        .hero-glow { 
            position: absolute; top: -20%; left: 50%; transform: translateX(-50%); 
            width: 1000px; height: 1000px; 
            background: radial-gradient(circle, rgba(14,165,233,0.15) 0%, rgba(79,70,229,0.05) 40%, rgba(255,255,255,0) 70%); 
            z-index: -1; pointer-events: none;
            animation: pulseGlow 8s infinite ease-in-out;
        }
        
        .badge { 
            display: inline-flex; align-items: center; gap: 8px; 
            background: #f0f9ff; border: 1px solid #bae6fd; color: #0284c7; 
            padding: 8px 16px; border-radius: 100px; font-size: 0.85rem; font-weight: 700; 
            margin-bottom: 32px; letter-spacing: 0.5px; text-transform: uppercase;
        }
        
        .hero h1 { 
            font-size: 5rem; font-weight: 800; line-height: 1.05; 
            letter-spacing: -2.5px; margin-bottom: 32px; color: var(--text-heading); 
        }
        .hero h1 span { 
            background: var(--gradient-text); -webkit-background-clip: text; -webkit-text-fill-color: transparent; 
        }
        
        .hero p { 
            font-size: 1.25rem; color: var(--text-body); max-width: 680px; 
            margin: 0 auto 48px auto; line-height: 1.7; font-weight: 500;
        }
        
        .hero-btns { display: flex; justify-content: center; align-items: center; gap: 16px; margin-bottom: 80px; }
        
        .hero .btn-primary { 
            padding: 16px 36px; font-size: 1.1rem; border-radius: 14px;
            background: var(--gradient-primary); box-shadow: var(--shadow-glow);
        }
        .hero .btn-primary:hover { box-shadow: 0 15px 30px -10px var(--accent); }
        
        .btn-secondary { 
            background: var(--bg-main); border: 1px solid var(--border-main); 
            color: var(--text-heading); padding: 16px 32px; border-radius: 14px; 
            font-weight: 600; font-size: 1.1rem; transition: all 0.3s ease; 
            display: flex; align-items: center; gap: 10px; box-shadow: var(--shadow-sm); 
        }
        .btn-secondary:hover { border-color: var(--border-focus); box-shadow: var(--shadow-md); transform: translateY(-2px); }

        /* MOCKUP (Dashboard vizyonu) */
        .mockup-wrapper { 
            position: relative; max-width: 1080px; margin: 0 auto; 
            animation: float 8s ease-in-out infinite; perspective: 1000px;
        }
        .mockup-inner {
            border-radius: 24px; border: 1px solid rgba(255,255,255,0.8); 
            box-shadow: var(--shadow-xl), 0 0 0 1px var(--border-light);
            overflow: hidden; background: var(--bg-main);
            transform: translateZ(0); /* Donanım ivmelendirmesi */
        }
        .mockup-glow { 
            position: absolute; top: 20%; left: 5%; right: 5%; bottom: -10%; 
            background: linear-gradient(to right, #0ea5e9, #4f46e5); 
            filter: blur(100px); opacity: 0.15; z-index: -1; 
        }

        /* TRUST LOGOS */
        .trust-section { 
            padding: 80px 0; border-top: 1px solid var(--border-light); 
            background: linear-gradient(to bottom, var(--bg-main), var(--bg-secondary)); 
            text-align: center; 
        }
        .trust-title { 
            font-size: 0.85rem; color: var(--text-muted); text-transform: uppercase; 
            letter-spacing: 3px; font-weight: 700; margin-bottom: 40px; 
        }
        .trust-logos { 
            display: flex; justify-content: center; align-items: center; gap: 80px; 
            flex-wrap: wrap; opacity: 0.4; filter: grayscale(100%); transition: all 0.4s ease; 
        }
        .trust-logos:hover { opacity: 0.8; filter: grayscale(0%); }
        .trust-logos span { font-size: 1.5rem; font-weight: 800; color: var(--text-heading); letter-spacing: -0.5px;}

        /* FEATURES (Grid System) */
        .section-padding { padding: 160px 0; }
        .section-header { text-align: center; max-width: 650px; margin: 0 auto 80px auto; }
        .section-header h2 { 
            font-size: 3rem; font-weight: 800; margin-bottom: 24px; 
            letter-spacing: -1.5px; color: var(--text-heading); line-height: 1.1;
        }
        .section-header p { font-size: 1.15rem; color: var(--text-body); }

        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
        .feature-card { 
            background: var(--bg-card); padding: 48px 40px; border-radius: 24px; 
            border: 1px solid var(--border-light); transition: all 0.4s ease; 
            position: relative; overflow: hidden; box-shadow: var(--shadow-sm); 
            z-index: 1;
        }
        /* İnce detay: Kart içine çok hafif gradient */
        .feature-card::after {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(180deg, rgba(248, 250, 252, 0) 0%, rgba(248, 250, 252, 0.5) 100%);
            z-index: -1;
        }
        .feature-card:hover { 
            transform: translateY(-8px); 
            border-color: var(--border-focus); 
            box-shadow: var(--shadow-xl); 
        }
        
        .f-icon { 
            width: 64px; height: 64px; background: #f0f9ff; color: var(--primary); 
            border-radius: 18px; display: flex; align-items: center; justify-content: center; 
            margin-bottom: 32px; font-size: 1.5rem; border: 1px solid #e0f2fe;
            transition: all 0.3s ease;
        }
        .feature-card:hover .f-icon { background: var(--primary); color: #fff; transform: scale(1.05); }
        
        .feature-card h3 { font-size: 1.4rem; font-weight: 700; margin-bottom: 16px; color: var(--text-heading); letter-spacing: -0.5px; }
        .feature-card p { color: var(--text-body); font-size: 1.05rem; line-height: 1.6; }

        /* HOW IT WORKS */
        .steps-wrapper { background: var(--bg-secondary); border-radius: 40px; padding: 100px 40px; border: 1px solid var(--border-light); }
        .steps-container { display: flex; justify-content: space-between; position: relative; margin-top: 60px; }
        .steps-container::after { 
            content: ''; position: absolute; top: 40px; left: 15%; right: 15%; 
            height: 1px; background: linear-gradient(90deg, transparent, var(--border-focus), transparent); z-index: 1; 
        }
        .step { flex: 1; text-align: center; position: relative; z-index: 2; padding: 0 24px; }
        .step-num { 
            width: 80px; height: 80px; background: var(--bg-main); border: 1px solid var(--border-main); 
            color: var(--text-heading); border-radius: 50%; display: flex; align-items: center; justify-content: center; 
            font-size: 1.75rem; font-weight: 800; margin: 0 auto 32px auto; 
            box-shadow: 0 0 0 8px var(--bg-secondary); transition: all 0.4s ease; 
        }
        .step:hover .step-num { border-color: var(--primary); background: var(--primary); color: #fff; box-shadow: 0 0 0 8px rgba(14, 165, 233, 0.1); transform: scale(1.1); }
        .step h3 { font-size: 1.35rem; font-weight: 700; margin-bottom: 16px; color: var(--text-heading); }
        .step p { color: var(--text-body); line-height: 1.6; }

        /* PRICING */
        .pricing-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; max-width: 960px; margin: 0 auto; }
        .price-card { 
            background: var(--bg-card); border: 1px solid var(--border-main); border-radius: 32px; 
            padding: 56px 48px; position: relative; box-shadow: var(--shadow-md); transition: all 0.4s ease; 
            display: flex; flex-direction: column;
        }
        .price-card:hover { box-shadow: var(--shadow-xl); transform: translateY(-4px); }
        
        /* Popüler Paket Vurgusu */
        .price-card.popular { 
            border: 2px solid var(--accent); box-shadow: var(--shadow-xl), var(--shadow-glow); 
            background: linear-gradient(180deg, var(--bg-main) 0%, #f8fafc 100%);
        }
        .popular-badge { 
            position: absolute; top: -16px; left: 50%; transform: translateX(-50%); 
            background: var(--gradient-primary); color: #fff; padding: 8px 24px; 
            border-radius: 100px; font-weight: 700; font-size: 0.85rem; letter-spacing: 0.5px;
            box-shadow: 0 4px 10px rgba(79, 70, 229, 0.3);
        }
        
        .p-name { font-size: 1.1rem; font-weight: 700; color: var(--text-heading); margin-bottom: 16px; text-transform: uppercase; letter-spacing: 1.5px; }
        .p-price { font-size: 4rem; font-weight: 800; margin-bottom: 24px; display: flex; align-items: baseline; gap: 8px; color: var(--text-heading); letter-spacing: -2px; }
        .p-price span { font-size: 1.15rem; color: var(--text-muted); font-weight: 500; letter-spacing: 0; }
        
        .p-list { margin-bottom: 48px; flex-grow: 1; }
        .p-list li { display: flex; align-items: center; gap: 16px; margin-bottom: 18px; font-weight: 500; color: var(--text-body); font-size: 1.05rem; }
        .p-list li svg { width: 22px; height: 22px; color: #10b981; flex-shrink: 0; background: #ecfdf5; border-radius: 50%; padding: 2px; }
        
        .btn-full { width: 100%; display: flex; justify-content: center; padding: 18px 0; font-size: 1.1rem; border-radius: 16px; }

        /* FOOTER */
        footer { background: #020617; padding: 100px 0 40px 0; color: #f8fafc; border-top: 1px solid #1e293b; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 80px; margin-bottom: 80px; }
        .f-about p { color: #94a3b8; margin-top: 24px; max-width: 320px; line-height: 1.8; font-size: 0.95rem; }
        .f-about .logo { color: #fff; font-size: 1.75rem; }
        
        .f-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 32px; color: #fff; letter-spacing: 0.5px; }
        .f-links li { margin-bottom: 16px; }
        .f-links a { color: #94a3b8; transition: all 0.3s ease; font-weight: 500; font-size: 0.95rem; }
        .f-links a:hover { color: #38bdf8; padding-left: 4px; }
        
        .footer-bottom { 
            border-top: 1px solid rgba(255,255,255,0.05); padding-top: 32px; 
            display: flex; justify-content: space-between; align-items: center;
            color: #64748b; font-size: 0.9rem; font-weight: 500;
        }

        /* RESPONSIVE */
        @media (max-width: 1024px) {
            .hero h1 { font-size: 4rem; }
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .pricing-grid { max-width: 700px; gap: 24px; }
            .steps-container::after { display: none; }
        }
        @media (max-width: 768px) {
            .nav-links, .nav-actions .btn-login { display: none; }
            .hero { padding: 140px 0 80px 0; }
            .hero h1 { font-size: 3rem; letter-spacing: -1px; }
            .hero-btns { flex-direction: column; width: 100%; }
            .hero-btns a { width: 100%; justify-content: center; }
            .features-grid, .pricing-grid, .footer-grid { grid-template-columns: 1fr; }
            .steps-container { flex-direction: column; gap: 40px; }
            .trust-logos { gap: 40px; }
            .footer-grid { gap: 40px; }
            .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
        }
        
        /* RTL Desteği (Arapça vs. için) */
        html[dir="rtl"] .p-list li svg { transform: scaleX(-1); }
        html[dir="rtl"] .lang-select { background-position: left 10px center; padding-left: 32px; padding-right: 12px; }
        html[dir="rtl"] .f-links a:hover { padding-left: 0; padding-right: 4px; }