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

        :root {
            --bg-primary: #060918;
            --bg-secondary: #0d1129;
            --bg-card: rgba(15, 20, 50, 0.65);
            --accent: #7c3aed;
            --accent-light: #a78bfa;
            --accent-glow: rgba(124, 58, 237, 0.3);
            --text-primary: #e8eaf0;
            --text-secondary: #9ba3b5;
            --text-muted: #5c6478;
            --border-subtle: rgba(124, 58, 237, 0.15);
        }

        body {
            font-family: 'Inter', -apple-system, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
        }

        a { color: var(--accent-light); text-decoration: none; }

        .navbar {
            position: fixed; top: 0; left: 0; right: 0; z-index: 100;
            padding: 1rem 2rem;
            display: flex; align-items: center; justify-content: space-between;
            background: rgba(6, 9, 24, 0.85);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
        }
        .navbar-brand { display: flex; align-items: center; gap: 0.6rem; font-size: 1.3rem; font-weight: 800; color: var(--text-primary); }
        .navbar-brand span { color: var(--accent-light); }
        .navbar-links { display: flex; gap: 2rem; align-items: center; }
        .navbar-links a { color: var(--text-secondary); font-size: 0.9rem; font-weight: 500; transition: color 0.2s; }
        .navbar-links a:hover { color: var(--text-primary); }
        .btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; padding: 0.7rem 1.5rem; border-radius: 8px; font-weight: 600; font-size: 0.9rem; border: none; cursor: pointer; transition: all 0.2s; text-decoration: none; }
        .btn-primary { background: var(--accent); color: var(--text-primary); }
        .btn-primary:hover { background: #6d28d9; box-shadow: 0 0 30px var(--accent-glow); }
        .btn-ghost { background: transparent; color: var(--text-secondary); border: 1px solid var(--border-subtle); }
        .btn-ghost:hover { border-color: var(--accent); color: var(--text-primary); }
        .btn-lg { padding: 1rem 2.5rem; font-size: 1.05rem; border-radius: 12px; }

        .hero {
            min-height: 100vh;
            display: flex; flex-direction: column; align-items: center; justify-content: center;
            text-align: center; padding: 8rem 2rem 4rem; position: relative;
        }
        .hero::before {
            content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
            background: radial-gradient(ellipse 80% 60% at 50% 20%, rgba(124, 58, 237, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-badge {
            display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.4rem 1rem;
            background: rgba(124, 58, 237, 0.1); border: 1px solid rgba(124, 58, 237, 0.3);
            border-radius: 100px; font-size: 0.8rem; font-weight: 500; color: var(--accent-light); margin-bottom: 2rem;
        }
        .hero h1 {
            font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 900; line-height: 1.1; margin-bottom: 1.5rem;
            background: linear-gradient(135deg, #fff 0%, var(--accent-light) 100%);
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
        }
        .hero p { font-size: clamp(1rem, 2vw, 1.25rem); color: var(--text-secondary); max-width: 680px; margin-bottom: 2.5rem; line-height: 1.8; }
        .hero-buttons { display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center; }
        .hero-stats { display: flex; gap: 3rem; margin-top: 4rem; padding: 2rem 3rem; background: var(--bg-card); border: 1px solid var(--border-subtle); border-radius: 16px; }
        .hero-stat { text-align: center; }
        .hero-stat .value { font-size: 2rem; font-weight: 800; color: var(--accent-light); }
        .hero-stat .label { font-size: 0.8rem; color: var(--text-muted); margin-top: 0.25rem; }

        .section { padding: 6rem 2rem; max-width: 1200px; margin: 0 auto; }
        .section-label { display: inline-block; font-size: 0.75rem; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: var(--accent-light); margin-bottom: 1rem; }
        .section-title { font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 800; color: var(--text-primary); margin-bottom: 1rem; }
        .section-desc { font-size: 1.1rem; color: var(--text-secondary); max-width: 600px; margin-bottom: 3rem; }

        .features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 1.5rem; }
        .feature-card { padding: 2rem; background: var(--bg-card); border: 1px solid var(--border-subtle); border-radius: 16px; transition: all 0.3s; }
        .feature-card:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: 0 8px 32px rgba(124, 58, 237, 0.15); }
        .feature-icon { font-size: 2rem; margin-bottom: 1rem; }
        .feature-card h3 { font-size: 1.15rem; font-weight: 700; color: var(--text-primary); margin-bottom: 0.5rem; }
        .feature-card p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; }

        .steps { display: flex; gap: 2rem; flex-wrap: wrap; justify-content: center; }
        .step { flex: 1; min-width: 260px; max-width: 350px; text-align: center; padding: 2rem; position: relative; }
        .step-num { width: 56px; height: 56px; display: inline-flex; align-items: center; justify-content: center; border-radius: 50%; background: var(--accent); color: var(--text-primary); font-weight: 800; font-size: 1.3rem; margin-bottom: 1.5rem; }
        .step h3 { font-size: 1.15rem; font-weight: 700; color: var(--text-primary); margin-bottom: 0.5rem; }
        .step p { font-size: 0.9rem; color: var(--text-secondary); }

        .pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 2rem; max-width: 1100px; margin: 0 auto; }
        .pricing-card { padding: 2.5rem; background: var(--bg-card); border: 1px solid var(--border-subtle); border-radius: 20px; position: relative; }
        .pricing-card.featured { border-color: var(--accent); box-shadow: 0 0 40px var(--accent-glow); }
        .pricing-card.featured::before {
            content: 'MOST POPULAR'; position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
            padding: 0.3rem 1rem; background: var(--accent); color: var(--text-primary); font-size: 0.7rem; font-weight: 700; letter-spacing: 1px; border-radius: 100px;
        }
        .pricing-card .tier { font-size: 0.85rem; font-weight: 600; color: var(--accent-light); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 0.5rem; }
        .pricing-card .price { font-size: 3rem; font-weight: 900; color: var(--text-primary); }
        .pricing-card .price span { font-size: 1rem; font-weight: 400; color: var(--text-muted); }
        .pricing-card .price-desc { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 2rem; }
        .pricing-card ul { list-style: none; padding: 0; margin-bottom: 2rem; }
        .pricing-card li { padding: 0.6rem 0; font-size: 0.9rem; color: var(--text-secondary); display: flex; align-items: center; gap: 0.6rem; }
        .pricing-card li::before { content: none; }
        .pricing-card li .lucide { width: 16px; height: 16px; color: #10b981; margin-right: 0; flex-shrink: 0; }
        .pricing-card .btn { width: 100%; justify-content: center; }

        .divider { height: 1px; background: linear-gradient(90deg, transparent, var(--border-subtle), transparent); max-width: 1200px; margin: 0 auto; }
        .footer { padding: 3rem 2rem; text-align: center; border-top: 1px solid var(--border-subtle); }
        .footer p { color: var(--text-muted); font-size: 0.85rem; }
        .footer a { color: var(--accent-light); }

        @media (max-width: 768px) {
            .navbar-links { display: none; }
            .hero-stats { flex-direction: column; gap: 1.5rem; padding: 1.5rem; }
            .features-grid { grid-template-columns: 1fr; }
            .steps { flex-direction: column; align-items: center; }
            .pricing-grid { grid-template-columns: 1fr; max-width: 400px; }
        }
    
        

    
        /* --- Acik Tema (Zorunlu Oncelikli) --- */
        html[data-theme="light"]:root {
            --bg-primary: #f4f4f5 !important;
            --bg-secondary: #ffffff !important;
            --bg-card: #ffffff !important;
            --accent: #6d28d9 !important;
            --accent-light: #8b5cf6 !important;
            --accent-glow: rgba(109, 40, 217, 0.15) !important;
            --text-primary: #18181b !important;
            --text-secondary: #52525b !important;
            --text-muted: #a1a1aa !important;
            --border-subtle: #e4e4e7 !important;
        }

        /* Evrensel Animasyon */
        html[data-theme] *, html[data-theme] *::before, html[data-theme] *::after {
            transition-property: background-color, color, border-color, box-shadow, fill, stroke !important;
            transition-duration: 0.4s !important;
            transition-timing-function: ease !important;
        }

        /* Navbar Ozel */
        html[data-theme="light"] .navbar {
            background: rgba(255, 255, 255, 0.85) !important;
            border-bottom: 1px solid var(--border-subtle) !important;
        }
        html[data-theme="light"] .navbar-brand { color: #09090b !important; }
        html[data-theme="light"] .navbar-links a { color: var(--text-secondary) !important; }
        html[data-theme="light"] .navbar-links a:hover { color: var(--accent) !important; }

    
        /* --- Hero ve Metin Fixleri --- */
        html[data-theme="light"] .hero h1,
        html[data-theme="light"] .hero h2 {
            color: #09090b !important;
            /* Eger h1 icinde webkit-text-fill-color varsa, gradient'i acik temaya uygun yap: */
            background: linear-gradient(135deg, #18181b 0%, #6d28d9 100%) !important;
            -webkit-background-clip: text !important;
            -webkit-text-fill-color: transparent !important;
        }
        
        /* Acik temadaki diger alt basliklar */
        html[data-theme="light"] .feature-card h3 {
            color: #18181b !important;
        }
        .btn-primary { color: #ffffff !important; }

    
        /* --- Premium Cards & Scroll Animations --- */
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: 16px;
            padding: 2.5rem 2rem;
            text-align: left;
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275) !important;
            position: relative;
            overflow: hidden;
            z-index: 1;
        }
        
        .feature-card::before {
            content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
            background: radial-gradient(circle at top right, var(--accent-glow), transparent 60%);
            opacity: 0; transition: opacity 0.4s ease; z-index: -1;
        }

        .feature-card:hover {
            transform: translateY(-8px);
            border-color: var(--accent-light);
            box-shadow: 0 15px 35px var(--accent-glow);
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-icon-wrapper {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 54px; height: 54px;
            border-radius: 12px;
            background: rgba(124, 58, 237, 0.1);
            border: 1px solid rgba(124, 58, 237, 0.2);
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            box-shadow: 0 4px 15px rgba(124, 58, 237, 0.05);
            transition: transform 0.3s ease;
        }
        
        .feature-card:hover .feature-icon-wrapper {
            transform: scale(1.1) rotate(5deg);
            background: rgba(124, 58, 237, 0.2);
        }

        .feature-card h3 {
            font-size: 1.25rem; font-weight: 700; margin-bottom: 1rem;
            color: var(--text-heading, #fff);
        }

        .feature-card p {
            font-size: 0.95rem; color: var(--text-secondary); line-height: 1.7;
        }

        /* Fade-Up Animasyon Siniflari */
        .fade-up {
            opacity: 0;
            transform: translateY(40px);
            transition: opacity 0.8s ease-out, transform 0.8s ease-out;
        }
        .fade-up.in-view {
            opacity: 1;
            transform: translateY(0);
        }