:root {
            --primary-blue: #1e40af;
            --secondary-blue: #3b82f6;
            --light-blue: #dbeafe;
            --dark-blue: #1e3a8a;
            --gradient-primary: linear-gradient(135deg, #1e40af 0%, #3b82f6 50%, #60a5fa 100%);
            --gradient-secondary: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
            --text-dark: #1f2937;
            --text-light: #6b7280;
            --white: #ffffff;
            --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
            --shadow-md: 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);
            --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
        }

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

        body {
            font-family: 'Poppins', sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            padding-top: 80px;
        }

        /* Navbar */
        .navbar {
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(20px);
            box-shadow: var(--shadow-lg);
            transition: all 0.3s ease;
        }

        .navbar-brand {
            font-weight: 800;
            font-size: 1.75rem;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .btn-back {
            background: var(--gradient-primary);
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 25px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
        }

        .btn-back:hover {
            color: white;
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        /* Hero Detail */
        .hero-detail {
            background: var(--gradient-primary);
            color: white;
            padding: 4rem 0;
            position: relative;
            overflow: hidden;
        }

        .hero-detail::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="grid" width="50" height="50" patternUnits="userSpaceOnUse"><path d="M 50 0 L 0 0 0 50" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
        }

        .hero-detail .container {
            position: relative;
            z-index: 2;
        }

        .app-image {
            border-radius: 20px;
            box-shadow: var(--shadow-xl);
            transition: transform 0.4s ease;
            margin-top: 30px;
        }

        .app-image:hover {
            transform: scale(1.02);
        }

        /* Content Sections */
        .section {
            padding: 4rem 0;
        }

        .section-title {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 2rem;
            position: relative;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 0;
            width: 60px;
            height: 4px;
            background: var(--gradient-primary);
            border-radius: 2px;
        }

        /* Feature List */
        .feature-list {
            background: var(--gradient-secondary);
            border-radius: 20px;
            padding: 2.5rem;
            box-shadow: var(--shadow-md);
        }

        .feature-list ul {
            list-style: none;
            padding: 0;
        }

        .feature-list li {
            padding: 0.8rem 0;
            border-bottom: 1px solid rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
        }

        .feature-list li:last-child {
            border-bottom: none;
        }

        .feature-list li:hover {
            background: rgba(30, 64, 175, 0.05);
            padding-left: 1rem;
            border-radius: 10px;
        }

        .feature-list i {
            color: #10b981;
            font-size: 1.2rem;
            margin-right: 1rem;
        }

        /* Tech Stack */
        .tech-badge {
            background: var(--light-blue);
            color: var(--primary-blue);
            padding: 0.6rem 1.2rem;
            border-radius: 25px;
            font-weight: 500;
            margin: 0.3rem;
            display: inline-block;
            transition: all 0.3s ease;
        }

        .tech-badge:hover {
            background: var(--primary-blue);
            color: white;
            transform: translateY(-2px);
        }

        /* Sidebar */
        .sidebar-card {
            background: white;
            border: none;
            border-radius: 20px;
            box-shadow: var(--shadow-lg);
            padding: 2rem;
            margin-bottom: 2rem;
            transition: transform 0.3s ease;
        }

        .sidebar-card:hover {
            transform: translateY(-5px);
        }

        .sidebar-card h5 {
            color: var(--text-dark);
            font-weight: 600;
            margin-bottom: 1.5rem;
        }

        .sidebar-card h6 {
            color: var(--primary-blue);
            font-weight: 600;
            margin-top: 1.5rem;
            margin-bottom: 0.5rem;
        }

        .sidebar-card p {
            color: var(--text-light);
            margin-bottom: 0.5rem;
        }

        /* Buttons */
        .btn-primary {
            background: var(--gradient-primary);
            border: none;
            border-radius: 25px;
            padding: 0.8rem 2rem;
            font-weight: 600;
            transition: all 0.3s ease;
        }

        .btn-primary:hover {
            background: var(--primary-blue);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        .btn-outline-primary {
            border: 2px solid var(--primary-blue);
            color: var(--primary-blue);
            border-radius: 25px;
            padding: 0.8rem 2rem;
            font-weight: 600;
            transition: all 0.3s ease;
        }

        .btn-outline-primary:hover {
            background: var(--primary-blue);
            border-color: var(--primary-blue);
            color: white;
            transform: translateY(-2px);
        }

        /* Screenshots */
        .screenshot-grid img {
            border-radius: 10px;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .screenshot-grid img:hover {
            transform: scale(1.05);
            box-shadow: var(--shadow-lg);
        }

        /* Related Apps */
        .related-apps {
            background: var(--gradient-secondary);
        }

        .related-card {
            background: white;
            border: none;
            border-radius: 20px;
            overflow: hidden;
            transition: all 0.4s ease;
            box-shadow: var(--shadow-md);
            height: 100%;
        }

        .related-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-xl);
        }

        .related-card img {
            height: 200px;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .related-card:hover img {
            transform: scale(1.1);
        }

        /* Animations */
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.8s ease;
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* Responsive */
        @media (max-width: 768px) {
            .hero-detail {
                padding: 2rem 0;
                text-align: center;
            }
            
            .section {
                padding: 2rem 0;
            }
            
            .section-title {
                font-size: 2rem;
            }
            
            .feature-list,
            .sidebar-card {
                padding: 1.5rem;
            }
        }