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

        :root {
            --primary: #08859B;
            --primary-dark: #066d7e;
            --accent: #F8BE2E;
            --danger: #ef4444;
            --warning: #f59e0b;
            --dark: #1f2937;
            --light: #f9fafb;
            --gray: #6b7280;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
            --radius: 1rem;
            --transition: all 0.2s ease;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background: linear-gradient(135deg, #f3f4f6 0%, #e5e7eb 100%);
            color: var(--dark);
            line-height: 1.5;
            padding: 0;
            margin: 0;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 1.5rem;
        }

        /* Header */
        header {
            background: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 10;
        }

        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 1.5rem;
            max-width: 1280px;
            margin: 0 auto;
        }

        .logo a {
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .logo-icon {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            width: 40px;
            height: 40px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.25rem;
        }

        .logo-text {
            font-weight: 800;
            font-size: 1.4rem;
            color: var(--dark);
        }

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

        .nav-buttons {
            display: flex;
            gap: 0.75rem;
        }

        .btn-icon {
            background: var(--light);
            border: 1px solid #e5e7eb;
            padding: 0.5rem 1rem;
            border-radius: 2rem;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-icon:hover {
            background: #e5e7eb;
            transform: translateY(-2px);
        }

        /* Main Card */
        .card {
            background: white;
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
            overflow: hidden;
            margin-bottom: 2rem;
        }

        .card-header {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            padding: 1.5rem;
            color: white;
        }

        .card-header h1 {
            font-size: 1.8rem;
            margin-bottom: 0.5rem;
        }

        .card-header p {
            opacity: 0.9;
            font-size: 0.95rem;
        }

        /* Textarea */
        .textarea-container {
            padding: 1.5rem;
        }

        textarea {
            width: 100%;
            min-height: 280px;
            padding: 1rem;
            font-size: 1rem;
            font-family: 'Courier New', monospace;
            border: 2px solid #e5e7eb;
            border-radius: 0.75rem;
            resize: vertical;
            transition: var(--transition);
        }

        textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(8, 133, 155, 0.1);
        }

        /* Stats Grid */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 1rem;
            padding: 1.5rem;
            background: var(--light);
            border-top: 1px solid #e5e7eb;
        }

        .stat-card {
            background: white;
            border-radius: 1rem;
            padding: 1rem;
            text-align: center;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }

        .stat-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }

        .stat-label {
            font-size: 0.85rem;
            color: var(--gray);
            margin-top: 0.25rem;
        }

        /* Action Buttons */
        .action-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            padding: 1rem 1.5rem 1.5rem;
            justify-content: center;
        }

        .btn {
            padding: 0.6rem 1.2rem;
            border-radius: 2rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            transition: var(--transition);
            background: white;
            border: 1px solid #e5e7eb;
        }

        .btn-primary {
            background: var(--primary);
            color: white;
            border: none;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
        }

        .btn-accent {
            background: var(--accent);
            color: #1f2937;
            border: none;
        }

        .btn-accent:hover {
            background: #e6a812;
            transform: translateY(-2px);
        }

        .btn-danger {
            background: var(--danger);
            color: white;
            border: none;
        }

        .btn-danger:hover {
            background: #dc2626;
        }

        .btn-outline {
            border: 1px solid var(--primary);
            color: var(--primary);
            background: white;
        }

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

        /* Premium Features Section */
        .premium-features {
            background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
            border-radius: var(--radius);
            padding: 2rem;
            margin-bottom: 2rem;
            color: white;
        }

        .premium-header {
            text-align: center;
            margin-bottom: 2rem;
        }

        .premium-header h2 {
            font-size: 1.8rem;
            margin-bottom: 0.5rem;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 1.5rem;
        }

        .feature-card {
            background: rgba(255,255,255,0.1);
            backdrop-filter: blur(4px);
            border-radius: 1rem;
            padding: 1.5rem;
            transition: var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-5px);
            background: rgba(255,255,255,0.2);
        }

        .feature-icon {
            font-size: 2rem;
            margin-bottom: 1rem;
        }

        /* Ad Placeholder (AdSense Ready) */
        .ad-placeholder {
            background: #f0f2f5;
            border: 1px dashed #ccc;
            border-radius: 0.75rem;
            text-align: center;
            padding: 1rem;
            margin: 1rem 0;
            color: #6c757d;
            font-size: 0.8rem;
        }

        /* Toast */
        .toast {
            position: fixed;
            bottom: 1.5rem;
            right: 1.5rem;
            background: var(--dark);
            color: white;
            padding: 0.75rem 1.25rem;
            border-radius: 2rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            opacity: 0;
            transform: translateY(1rem);
            transition: opacity 0.3s, transform 0.3s;
            z-index: 1000;
            pointer-events: none;
        }

        .toast.show {
            opacity: 1;
            transform: translateY(0);
        }

        /* Responsive */
        @media (max-width: 640px) {
            .container {
                padding: 1rem;
            }
            .stat-value {
                font-size: 1.5rem;
            }
            .action-buttons {
                justify-content: center;
            }
            .btn {
                padding: 0.5rem 1rem;
                font-size: 0.9rem;
            }
            .card-header h1 {
                font-size: 1.4rem;
            }
        }