:root[data-theme="light"] {
            --primary-color: #6366f1;
            --primary-dark: #4f46e5;
            --primary-light: #a5b4fc;
            --secondary-color: #f97316;
            --secondary-light: #fdba74;
            --success-color: #10b981;
            --error-color: #ef4444;
            --text-color: #1f2937;
            --text-muted: #6b7280;
            --text-light: #9ca3af;
            --bg-primary: #ffffff;
            --bg-secondary: #f8fafc;
            --bg-accent: #f1f5f9;
            --border-color: #e2e8f0;
            --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
            --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
            --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
        }

        :root[data-theme="dark"] {
            --primary-color: #8b5cf6;
            --primary-dark: #7c3aed;
            --primary-light: #c4b5fd;
            --secondary-color: #f59e0b;
            --secondary-light: #fbbf24;
            --success-color: #10b981;
            --error-color: #ef4444;
            --text-color: #f8fafc;
            --text-muted: #cbd5e1;
            --text-light: #94a3b8;
            --bg-primary: #0f172a;
            --bg-secondary: #1e293b;
            --bg-accent: #334155;
            --border-color: #475569;
            --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
            --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
            --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
        }

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

        body {
            font-family: 'Poppins', sans-serif;
            background: var(--bg-primary);
            color: var(--text-color);
            line-height: 1.6;
            transition: all 0.3s ease;
            overflow-x: hidden;
        }


    #page-loader {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: var(--background-color, #fff); 
        z-index: 9999;
        display: flex;
        justify-content: center;
        align-items: center;
        opacity: 1;
        transition: opacity 0.5s ease-out;
    }

    #page-loader.hidden {
        opacity: 0;
        pointer-events: none; /* Gizlenirken tıklama olaylarını engelle */
    }

    .spinner {
        width: 50px;
        height: 50px;
        border: 5px solid rgba(128, 128, 128, 0.3); /* Spinner halkası rengi */
        border-top-color: #6366f1; /* Spinner ana rengi (temanızla uyumlu) */
        border-radius: 50%;
        animation: spin 1s linear infinite;
    }

    @keyframes spin {
        to {
            transform: rotate(360deg);
        }
    }

        .animated-bg {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            overflow: hidden;
        }

        .bg-layer-1 {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(-45deg, #6366f1, #8b5cf6, #ec4899, #f59e0b, #06b6d4, #10b981);
            background-size: 600% 600%;
            animation: gradientShift 20s ease infinite;
            opacity: 0.05;
        }

        .bg-layer-2 {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
                        radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
                        radial-gradient(circle at 40% 40%, rgba(236, 72, 153, 0.1) 0%, transparent 50%);
            animation: float 15s ease-in-out infinite;
        }

        .bg-particles {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
        }

        .particle {
            position: absolute;
            border-radius: 50%;
            background: linear-gradient(45deg, var(--primary-color), var(--primary-light));
            opacity: 0.1;
            animation: particleFloat linear infinite;
        }

        .wave-container {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 200px;
            overflow: hidden;
        }

        .wave {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 200%;
            height: 100%;
            background: linear-gradient(90deg, 
                transparent, 
                rgba(99, 102, 241, 0.05), 
                rgba(139, 92, 246, 0.05), 
                transparent
            );
            animation: waveMove 10s linear infinite;
        }

        .wave:nth-child(2) {
            animation-delay: -5s;
            animation-duration: 15s;
            opacity: 0.5;
        }

        .wave:nth-child(3) {
            animation-delay: -10s;
            animation-duration: 20s;
            opacity: 0.3;
        }

        [data-theme="dark"] .bg-layer-1 {
            opacity: 0.12;
        }

        [data-theme="dark"] .bg-layer-2 {
            background: radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
                        radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
                        radial-gradient(circle at 40% 40%, rgba(236, 72, 153, 0.15) 0%, transparent 50%);
        }

        [data-theme="dark"] .particle {
            background: linear-gradient(45deg, var(--primary-light), #ffffff);
            opacity: 0.05;
        }

        [data-theme="dark"] .wave {
            background: linear-gradient(90deg, 
                transparent, 
                rgba(139, 92, 246, 0.08), 
                rgba(99, 102, 241, 0.08), 
                transparent
            );
        }

        @keyframes gradientShift {
            0% { background-position: 0% 50%; }
            25% { background-position: 100% 25%; }
            50% { background-position: 100% 100%; }
            75% { background-position: 25% 100%; }
            100% { background-position: 0% 50%; }
        }

        @keyframes float {
            0%, 100% { transform: translateY(0px) rotate(0deg); }
            33% { transform: translateY(-20px) rotate(120deg); }
            66% { transform: translateY(20px) rotate(240deg); }
        }

        @keyframes particleFloat {
            0% { 
                transform: translateY(100vh) translateX(-50px) rotate(0deg); 
                opacity: 0;
            }
            10% { opacity: 0.1; }
            90% { opacity: 0.1; }
            100% { 
                transform: translateY(-100px) translateX(50px) rotate(360deg); 
                opacity: 0;
            }
        }

        @keyframes waveMove {
            0% { transform: translateX(-50%); }
            100% { transform: translateX(0%); }
        }

        .floating-elements {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: -1;
        }

        .floating-element {
            position: absolute;
            border-radius: 50%;
            background: linear-gradient(135deg, 
                rgba(99, 102, 241, 0.1), 
                rgba(139, 92, 246, 0.1)
            );
            animation: floatingMove infinite linear;
        }

        @keyframes floatingMove {
            0% {
                transform: translateY(100vh) translateX(0) rotate(0deg);
                opacity: 0;
            }
            10% {
                opacity: 0.8;
            }
            90% {
                opacity: 0.8;
            }
            100% {
                transform: translateY(-200px) translateX(100px) rotate(360deg);
                opacity: 0;
            }
        }

        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(30px);
            -webkit-backdrop-filter: blur(30px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.2);
            z-index: 1000;
            transition: all 0.3s ease;
        }

        .header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, 
                transparent, 
                rgba(99, 102, 241, 0.5), 
                rgba(139, 92, 246, 0.5), 
                transparent
            );
            animation: shimmer 3s ease-in-out infinite;
        }

        .header.scrolled {
            background: rgba(255, 255, 255, 0.15);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
            border-bottom: 1px solid rgba(255, 255, 255, 0.3);
        }

        [data-theme="dark"] .header {
            background: rgba(15, 23, 42, 0.1);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        [data-theme="dark"] .header.scrolled {
            background: rgba(15, 23, 42, 0.2);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
        }

        @keyframes shimmer {
            0%, 100% { opacity: 0; }
            50% { opacity: 1; }
        }

        .header-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
        }

        .logo-container {
            font-size: 1.6rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            text-decoration: none;
            color: var(--text-color);
        }

        .logo {
            width: 50px;
            height: 50px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.5rem;
            font-weight: bold;
            margin-right: 1rem;
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
        }

        .logo::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            transform: rotate(45deg);
            transition: all 0.6s ease;
            opacity: 0;
        }

        .logo img {
            transition: opacity 0.3s ease, transform 0.3s ease;
        }

        .logo img.changing {
            opacity: 0.7;
            transform: scale(0.95);
        }

        /* Enhanced logo hover effects */
        .logo:hover img {
            transform: translateY(-2px) scale(1.05);
        }

        .logo:hover {
            transform: translateY(-3px) scale(1.05);
            box-shadow: 0 12px 35px rgba(99, 102, 241, 0.4);
        }

        .logo:hover::before {
            opacity: 1;
            animation: logoShine 0.6s ease;
        }

        @keyframes logoShine {
            0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
            100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
        }

        .logo-text {
            font-size: 1.8rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

   
        .nav-links {
        display: flex;
        align-items: center;
        justify-content: flex-end;
        }

        .nav-link {
            color: var(--text-muted);
            text-decoration: none;
            font-weight: 500;
            padding: 0.75rem 1.25rem;
            border-radius: 12px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .nav-link::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, 
                transparent, 
                rgba(99, 102, 241, 0.1), 
                transparent
            );
            transition: all 0.5s ease;
        }

        .nav-link:hover::before {
            left: 100%;
        }

        .nav-link:hover {
            color: var(--primary-color);
            background: rgba(99, 102, 241, 0.05);
            transform: translateY(-2px);
            box-shadow: 0 4px 15px rgba(99, 102, 241, 0.2);
        }

        .nav-link.active {
            color: var(--primary-color);
            background: rgba(99, 102, 241, 0.1);
            box-shadow: 0 4px 15px rgba(99, 102, 241, 0.2);
        }

        .header-right {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .theme-toggle {
            width: 60px;
            height: 30px;
            background: var(--bg-accent);
            border-radius: 25px;
            border: 2px solid var(--border-color);
            cursor: pointer;
            position: relative;
            transition: all 0.4s ease;
            overflow: hidden;
        }

        .theme-toggle::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
            animation: pulse 2s ease-in-out infinite;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .theme-toggle:hover::before {
            opacity: 1;
        }

        .theme-toggle:hover {
            border-color: var(--primary-color);
            box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
        }

        .theme-toggle-slider {
            width: 24px;
            height: 24px;
            background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
            border-radius: 50%;
            position: absolute;
            top: 1px;
            left: 1px;
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 0.7rem;
            box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
        }

        [data-theme="dark"] .theme-toggle-slider {
            transform: translateX(30px);
            background: linear-gradient(135deg, #fbbf24, #f59e0b);
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.4);
        }

        @keyframes pulse {
            0%, 100% { transform: scale(1); opacity: 0.3; }
            50% { transform: scale(1.05); opacity: 0.1; }
        }

        .cta-button {
            background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
            color: white;
            padding: 0.75rem 1.5rem;
            border-radius: 12px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: var(--shadow);
        }

        .cta-button:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-color);
            font-size: 1.5rem;
            cursor: pointer;
        }

        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding: 0rem 2rem 2rem;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 20%;
            left: 10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            animation: breathe 4s ease-in-out infinite;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: 20%;
            right: 10%;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            animation: breathe 4s ease-in-out infinite reverse;
        }

        @keyframes breathe {
            0%, 100% { transform: scale(1); opacity: 0.3; }
            50% { transform: scale(1.2); opacity: 0.1; }
        }

        .hero-container {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .hero-content {
            z-index: 10;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(20px);
            color: var(--primary-color);
            padding: 0.75rem 1.5rem;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 2rem;
            border: 1px solid rgba(99, 102, 241, 0.3);
            position: relative;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .hero-badge::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: all 0.8s ease;
        }

        .hero-badge:hover::before {
            left: 100%;
        }

        .hero-badge:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
        }

        [data-theme="dark"] .hero-badge {
            background: rgba(15, 23, 42, 0.2);
            border-color: rgba(139, 92, 246, 0.3);
        }

        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 1.5rem;
            background: linear-gradient(135deg, var(--text-color), var(--primary-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 1.25rem;
            color: var(--text-muted);
            margin-bottom: 2rem;
            line-height: 1.6;
        }

        .hero-buttons {
            display: flex;
            gap: 1rem;
            margin-bottom: 3rem;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
            color: white;
            padding: 1rem 2.5rem;
            border-radius: 15px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.4s ease;
            box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
            display: inline-flex;
            align-items: center;
            gap: 0.75rem;
            position: relative;
            overflow: hidden;
        }

        .btn-primary::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: all 0.6s ease;
        }

        .btn-primary:hover::before {
            left: 100%;
        }

        .btn-primary:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 12px 35px rgba(99, 102, 241, 0.4);
        }

        .btn-secondary {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(20px);
            color: var(--text-color);
            padding: 1rem 2.5rem;
            border-radius: 15px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.4s ease;
            border: 2px solid rgba(99, 102, 241, 0.3);
            display: inline-flex;
            align-items: center;
            gap: 0.75rem;
            position: relative;
            overflow: hidden;
        }

        .btn-secondary::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
            transition: all 0.4s ease;
            z-index: -1;
        }

        .btn-secondary:hover::before {
            left: 0;
        }

        .btn-secondary:hover {
            color: white;
            border-color: var(--primary-color);
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 12px 35px rgba(99, 102, 241, 0.4);
        }

        [data-theme="dark"] .btn-secondary {
            background: rgba(15, 23, 42, 0.2);
            border-color: rgba(139, 92, 246, 0.3);
        }

        .hero-visual {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            height: 600px;
        }

        .visual-placeholder {
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, 
                rgba(99, 102, 241, 0.1), 
                rgba(139, 92, 246, 0.1), 
                rgba(236, 72, 153, 0.1)
            );
            border-radius: 24px;
            position: relative;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 20px 50px rgba(99, 102, 241, 0.2);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .visual-placeholder::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: conic-gradient(
                transparent,
                rgba(99, 102, 241, 0.3),
                transparent,
                rgba(139, 92, 246, 0.3),
                transparent
            );
            animation: rotate 10s linear infinite;
        }

        .visual-placeholder::after {
            content: '';
            position: absolute;
            inset: 2px;
            background: var(--bg-primary);
            border-radius: 22px;
            opacity: 0.9;
        }

        .visual-glow {
            position: absolute;
            top: -50%;
            right: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(99, 102, 241, 0.2) 0%, transparent 70%);
            animation: rotate 20s linear infinite reverse;
            opacity: 0.6;
        }

        @keyframes rotate {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }

        .seo-input-container {
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            z-index: 3;
            left: 80px;
        }

        .input-wrapper {
            width: 100%;
            max-width: 600px;
            position: relative;
        }

        .input-label {
            position: absolute;
            top: -30px;
            left: 20px;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            color: var(--text-color);
            font-size: 1rem;
            font-weight: 600;
            padding: 0.5rem 1.5rem;
            border-radius: 20px;
            border: 2px solid rgba(99, 102, 241, 0.3);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
            z-index: 4;
            transition: all 0.3s ease;
        }

        [data-theme="dark"] .input-label {
            background: rgba(15, 23, 42, 0.2);
            color: var(--text-color);
            border-color: rgba(139, 92, 246, 0.3);
        }

        .modern-input-group {
            position: relative;
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(30px);
            -webkit-backdrop-filter: blur(30px);
            border: 2px solid rgba(99, 102, 241, 0.3);
            border-radius: 20px;
            padding: 0;
            box-shadow: 0 20px 60px rgba(99, 102, 241, 0.2);
            transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            overflow: hidden;
        }

        .modern-input-group:hover {
            border-color: rgba(99, 102, 241, 0.5);
            box-shadow: 0 25px 80px rgba(99, 102, 241, 0.3);
            transform: translateY(-2px);
        }

        .modern-input-group:focus-within {
            border-color: var(--primary-color);
            box-shadow: 0 30px 100px rgba(99, 102, 241, 0.4);
            transform: translateY(-3px);
        }

        [data-theme="dark"] .modern-input-group {
            background: rgba(15, 23, 42, 0.2);
            border-color: rgba(139, 92, 246, 0.3);
            box-shadow: 0 20px 60px rgba(139, 92, 246, 0.2);
        }

        [data-theme="dark"] .modern-input-group:hover {
            border-color: rgba(139, 92, 246, 0.5);
            box-shadow: 0 25px 80px rgba(139, 92, 246, 0.3);
        }

        [data-theme="dark"] .modern-input-group:focus-within {
            border-color: var(--primary-color);
            box-shadow: 0 30px 100px rgba(139, 92, 246, 0.4);
        }

        .protocol-prefix {
            padding: 1.25rem 0 1.25rem 1.5rem;
            color: var(--text-muted);
            font-size: 1.1rem;
            font-weight: 500;
            user-select: none;
            opacity: 0.8;
            transition: all 0.3s ease;
        }

        .modern-input-group:focus-within .protocol-prefix {
            color: var(--primary-color);
            opacity: 1;
        }

        .modern-input {
            flex: 1;
            background: transparent;
            border: none;
            outline: none;
            padding: 1.25rem 0.5rem;
            font-size: 1.1rem;
            color: var(--text-color);
            font-weight: 500;
            min-width: 0;
        }

        .modern-input::placeholder {
            color: var(--text-light);
            opacity: 0.7;
            transition: all 0.3s ease;
        }

        .modern-input:focus::placeholder {
            opacity: 0.4;
            transform: translateX(5px);
        }

        .check-button {
            background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
            color: white;
            border: none;
            padding: 1rem 2rem;
            margin: 0.25rem;
            border-radius: 16px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            display: flex;
            align-items: center;
            gap: 0.75rem;
            box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
            position: relative;
            overflow: hidden;
        }

        .check-button::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: all 0.6s ease;
        }

        .check-button:hover::before {
            left: 100%;
        }

        .check-button:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 12px 35px rgba(99, 102, 241, 0.4);
        }

        .check-button:active {
            transform: translateY(0) scale(0.98);
        }

        .check-button:disabled {
            opacity: 0.6;
            cursor: not-allowed;
            transform: none;
        }

        .check-button i {
            transition: all 0.3s ease;
        }

        .check-button:hover i {
            transform: scale(1.1);
        }

        .check-button.loading {
            pointer-events: none;
        }

        .check-button.loading i {
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }

        .tools-section {
            padding: 4rem 2rem;
            background: var(--bg-secondary);
        }

        .tools-container {
            max-width: 1400px;
            margin: 0 auto;
        }

        .section-header {
            text-align: center;
            margin-bottom: 4rem;
        }

        .section-title {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--text-color);
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }

        .tools-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2rem;
        }

        .tool-card {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(20px);
            padding: 2.5rem;
            border-radius: 20px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            border: 1px solid rgba(255, 255, 255, 0.2);
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }

        .tool-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, 
                transparent, 
                rgba(99, 102, 241, 0.1), 
                transparent
            );
            transition: all 0.6s ease;
        }

        .tool-card:hover::before {
            left: 100%;
        }

        .tool-card:hover {
            transform: translateY(-8px) scale(1.02);
            box-shadow: 0 20px 60px rgba(99, 102, 241, 0.2);
            border-color: rgba(99, 102, 241, 0.4);
        }

        [data-theme="dark"] .tool-card {
            background: rgba(15, 23, 42, 0.2);
            border-color: rgba(255, 255, 255, 0.1);
        }

        [data-theme="dark"] .tool-card:hover {
            border-color: rgba(139, 92, 246, 0.4);
            box-shadow: 0 20px 60px rgba(139, 92, 246, 0.2);
        }

        .tool-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.75rem;
            margin-bottom: 1.5rem;
            position: relative;
            overflow: hidden;
            box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
        }

        .tool-icon::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
            transform: rotate(45deg);
            transition: all 0.6s ease;
            opacity: 0;
        }

        .tool-card:hover .tool-icon::before {
            opacity: 1;
            animation: iconShine 0.6s ease;
        }

        @keyframes iconShine {
            0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
            100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
        }

        .tool-title {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--text-color);
        }

        .tool-description {
            color: var(--text-muted);
            margin-bottom: 1.5rem;
            line-height: 1.6;
        }

        .tool-link {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            transition: all 0.3s ease;
        }

        .tool-link:hover {
            gap: 0.75rem;
        }

        .footer {
            background: var(--bg-secondary);
            padding: 3rem 2rem 2rem;
            border-top: 1px solid var(--border-color);
        }

        .footer-container {
            max-width: 1400px;
            margin: 0 auto;
        }

        .footer-content {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 3rem;
            margin-bottom: 2rem;
        }

        .footer-brand {
            display: flex;
            flex-direction: column;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            margin-bottom: 1rem;
        }

        .footer-description {
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 1.5rem;
        }

        .social-links {
            display: flex;
            gap: 1rem;
        }

        .social-link {
            width: 40px;
            height: 40px;
            background: var(--bg-accent);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .social-link:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-2px);
        }

        .footer-section h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--text-color);
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .footer-links a {
            color: var(--text-muted);
            text-decoration: none;
            transition: all 0.3s ease;
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        
        .main-content-area {
            padding-top: 80px; /* Adjust based on header height */
            position: relative;
            z-index: 1;
        }

        .app-container .main-content {
            min-height: calc(100vh - 80px - 100px); /* 100vh - header - footer approx */
            padding-top: 2rem; /* Add some padding if needed */
            padding-bottom: 2rem;
        }


        @media (max-width: 768px) {
            .header-container {
                padding: 0 1rem;
            }

            .nav-links {
                display: none;
            }

            .mobile-menu-toggle {
                display: block;
            }

            .hero-container {
                grid-template-columns: 1fr;
                gap: 2rem;
                text-align: center;
            }
             .hero-visual {
                height: 400px;
            }
            .hero-title {
                font-size: 2.5rem;
            }

            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }


            .tools-grid {
                grid-template-columns: 1fr;
            }

            .footer-content {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 1rem;
                text-align: center;
            }

            .input-wrapper {
                max-width: 100%;
                padding: 0 1rem;
            }
            .seo-input-container {
                left: 0;
            }

            .input-label {
                top: -25px;
                left: 30px;
                font-size: 0.9rem;
                padding: 0.4rem 1.2rem;
            }

            .modern-input-group {
                flex-direction: column;
                border-radius: 16px;
            }

            .protocol-prefix {
                display: none;
            }

            .modern-input {
                padding: 1rem 1.5rem;
                text-align: center;
                font-size: 1rem;
            }

            .check-button {
                width: calc(100% - 1rem);
                margin: 0.5rem;
                justify-content: center;
                border-radius: 12px;
            }
        }

        html {
            scroll-behavior: smooth;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .fade-in-up {
            animation: fadeInUp 0.6s ease forwards;
        }
        .no-js-fallback {
            padding: 20px;
            text-align: center;
            background-color: #ffdddd;
            color: #a94442;
            border: 1px solid #ebccd1;
        }
        #root .main-content, #mobile-app .main-content {
            padding: 20px; /* Example padding */
        }

        .theme-toggle {
    width: 60px;
    height: 30px;
    background: var(--bg-accent);
    border-radius: 25px;
    border: 2px solid var(--border-color);
    cursor: pointer;
    position: relative;
    transition: all 0.4s ease;
    overflow: hidden;
}

.theme-toggle-slider {
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    position: absolute;
    top: 1px;
    left: 1px;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.7rem;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

[data-theme="dark"] .theme-toggle-slider {
    transform: translateX(30px);
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.4);
}

/* Language Switcher Styles */
.language-switcher {
    position: relative;
    display: inline-block;
    margin-right: 1rem;
}

.lang-button {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: rgb(0, 0, 0);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    white-space: nowrap;
}

.lang-button:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
}

.lang-button i {
    font-size: 0.875rem;
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
    min-width: 160px;
    overflow: hidden;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.language-switcher.active .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: #374151;
    text-decoration: none;
    transition: all 0.2s ease;
    font-size: 0.875rem;
    font-weight: 500;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.lang-option:last-child {
    border-bottom: none;
}

.lang-option:hover {
    background: #f8fafc;
    color: #6366f1;
    transform: translateX(2px);
}

.lang-option.active {
    background: linear-gradient(135deg, #6366f1, #a5b4fc);
    color: white;
    font-weight: 600;
}

.lang-option.active:hover {
    background: linear-gradient(135deg, #5855eb, #9ca3af);
    transform: translateX(2px);
}

.lang-option .flag {
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
}

.lang-option .lang-name {
    flex: 1;
}

/* Dark theme styles */
[data-theme="dark"] .lang-dropdown {
    background: #1f2937;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .lang-option {
    color: #e5e7eb;
    border-bottom-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .lang-option:hover {
    background: #374151;
    color: #a5b4fc;
}

[data-theme="dark"] .lang-option.active {
    background: linear-gradient(135deg, #6366f1, #a5b4fc);
    color: white;
}

/* Mobile responsive styles */
@media (max-width: 768px) {
    .language-switcher {
        order: -1;
        margin-right: 0.5rem;
    }
    
    .lang-button {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }
    
    .lang-dropdown {
        right: 0;
        min-width: 140px;
    }
    
    .lang-option {
        padding: 0.6rem 0.8rem;
        font-size: 0.8rem;
    }
    
    .lang-option .flag {
        font-size: 1rem;
        width: 18px;
    }
}

/* Animation for dropdown arrow */
.lang-button::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid currentColor;
    margin-left: 0.25rem;
    transition: transform 0.3s ease;
}

.language-switcher.active .lang-button::after {
    transform: rotate(180deg);
}

/* Header integration styles */
.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-right > * {
    flex-shrink: 0;
}

/* Ensure proper z-index stacking */
.language-switcher {
    z-index: 100;
}

.lang-dropdown {
    z-index: 101;
}

/* Smooth transitions */
.lang-option {
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.lang-button {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Focus states for accessibility */
.lang-button:focus {
    outline: 2px solid #6366f1;
    outline-offset: 2px;
}

.lang-option:focus {
    outline: 2px solid #6366f1;
    outline-offset: -2px;
}