:root {
            --navy: #0a192f;
            --navy-light: #112240;
            --navy-lighter: #233554;
            --charcoal: #2d3748;
            --charcoal-light: #4a5568;
            --white: #ffffff;
            --white-off: #f7fafc;
            --accent: #3B82F6;
            --gray: #a0aec0;
            --transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', sans-serif;
            background-color: var(--white);
            color: var(--charcoal);
            line-height: 1.6;
            overflow-x: hidden;
        }

        h1, h2, h3, h4 {
            font-family: 'Space Grotesk', sans-serif;
            font-weight: 600;
            color: var(--navy);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        section {
            padding: 100px 0;
        }

        /* Navbar */
        .navbar {
            position: fixed;
            top: 0;
            width: 100%;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            z-index: 1000;
            padding: 20px 0;
            box-shadow: 0 5px 20px rgba(10, 25, 47, 0.05);
            transition: var(--transition);
        }

        .navbar-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            height: 40px;
            width: auto;
        }

        .nav-links {
            display: flex;
            gap: 30px;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--navy);
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }

        .nav-links a:hover {
            color: var(--accent);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--accent);
            transition: var(--transition);
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--navy);
            cursor: pointer;
        }

        /* Hero Section */
        .hero-grid {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr; 
            align-items: center;
            gap: 40px; 
        }

        .hero-image {
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 2;
        }

        .hero-image img {
            max-width: 260px;   
            width: 100%;
            border-radius: 26px;
            box-shadow: 0 18px 45px rgba(10, 25, 47, 0.22);
            animation: floatPhone 6s ease-in-out infinite;
        }

        /* Phone floating animation */
        @keyframes floatPhone {
            0%, 100% {
                transform: translateY(6px);
            }
            50% {
                transform: translateY(-6px);
            }
        }

        /* Hero container */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, var(--white-off) 0%, var(--white) 100%);
            position: relative;
            overflow: hidden;
            padding-top: 120px; 
        }

        /* Text side */
        .hero-content {
            max-width: 680px; 
            z-index: 2;
            position: relative;
        }

        /* Title */
        .hero-title {
            font-size: 2.7rem;      
            line-height: 1.2;
            letter-spacing: -0.3px;
            margin-bottom: 18px;
        }

        /* Subtitle */
        .hero-subtitle {
            font-size: 1rem;        
            line-height: 1.6;
            color: var(--charcoal-light);
            margin-bottom: 26px;
            max-width: 520px;
        }

        /* Buttons */
        .hero-buttons {
            display: flex;
            gap: 14px;
        }


        .btn {
            padding: 14px 32px;
            border-radius: 4px;
            text-decoration: none;
            font-weight: 600;
            display: inline-block;
            transition: var(--transition);
            cursor: pointer;
            border: none;
            font-family: 'Space Grotesk', sans-serif;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--navy), var(--navy-light));
            color: var(--white);
            box-shadow: 0 10px 30px rgba(10, 25, 47, 0.15);
        }

        .btn-primary:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(10, 25, 47, 0.2);
            background-color: var(--navy-light);
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--navy);
            border: 2px solid var(--navy-light);
        }

        .btn-secondary:hover {
            background-color: rgba(10, 25, 47, 0.05);
            transform: translateY(-5px);
        }

        .hero-shapes {
            position: absolute;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            z-index: 1;
            overflow: hidden;
        }

        .shape {
            position: absolute;
            background-color: var(--navy-lighter);
            border-radius: 50%;
            opacity: 0.1;
        }



        .shape-1 {
            width: 300px;
            height: 300px;
            top: 10%;
            right: 5%;
            animation: float 20s infinite ease-in-out;
        }

        .shape-2 {
            width: 200px;
            height: 200px;
            bottom: 20%;
            right: 15%;
            animation: float 25s infinite ease-in-out reverse;
        }

        .shape-3 {
            width: 150px;
            height: 150px;
            top: 50%;
            right: 25%;
            animation: float 30s infinite ease-in-out;
        }

        /* Section Headers */
        .section-header {
            text-align: center;
            margin-bottom: 70px;
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s, transform 0.8s;
        }

        .section-header.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .section-title {
            font-size: 2.5rem;
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background-color: var(--accent);
        }

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

        /* Problem & Solution Cards */
        .problem-grid, .solution-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .problem-card, .solution-card, .feature-card {
            background-color: var(--white);
            border-radius: 12px;
            padding: 40px 30px;
            box-shadow: 0 10px 30px rgba(10, 25, 47, 0.05);
            transition: var(--transition);
            border: 1px solid rgba(10, 25, 47, 0.05);
            opacity: 0;
            transform: translateY(30px);
        }

        .problem-card.visible, .solution-card.visible, .feature-card.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .problem-card:hover, .solution-card:hover, .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(10, 25, 47, 0.1);
        }

        .card-icon {
            font-size: 2.5rem;
            color: var(--navy);
            margin-bottom: 20px;
            display: inline-block;
        }

        .card-title {
            font-size: 1.5rem;
            margin-bottom: 15px;
        }

        .card-content {
            color: var(--charcoal-light);
        }

        /* Features Section */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .feature-card {
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: linear-gradient(90deg, var(--accent), var(--navy-light));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.5s ease;
        }

        .feature-card:hover::before {
            transform: scaleX(1);
        }

        /* App Interface Section */
        .app-interface {
            background-color: var(--white-off);
        }

        .app-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }

        .app-mockup {
            background-color: var(--white);
            border-radius: 20px;
            padding: 20px;
            box-shadow: 0 15px 40px rgba(10, 25, 47, 0.1);
            transition: var(--transition);
            opacity: 0;
            transform: translateY(30px);
        }

        .app-mockup.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .app-mockup:hover {
            transform: translateY(-15px) rotateY(5deg);
            box-shadow: 0 25px 60px rgba(10, 25, 47, 0.15);
        }

        .mockup-header {
            height: 30px;
            background-color: var(--navy);
            border-radius: 15px 15px 0 0;
            margin: -20px -20px 20px -20px;
            position: relative;
        }

        .mockup-header::before {
            content: '';
            position: absolute;
            width: 60px;
            height: 8px;
            background-color: var(--charcoal-light);
            border-radius: 4px;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }

        .app-image {
            width: 100%;
            height: auto;             
            border-radius: 10px;
            background-color: var(--navy-light);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }

        .app-image img {
            width: 100%;
            height: auto;             
            object-fit: contain;       
        }

        

        .app-label {
            text-align: center;
            margin-top: 15px;
            font-weight: 600;
            color: var(--navy);
        }

        /* Team Section */
        .team-container {
            display: flex;
            flex-direction: column;
            gap: 60px;
        }

        .team-members, .supervisor {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s, transform 0.8s;
        }

        .team-members.visible, .supervisor.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .team-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-top: 30px;
        }

        .team-member, .supervisor-card {
            text-align: center;
            padding: 30px;
            background-color: var(--white);
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(10, 25, 47, 0.05);
            transition: var(--transition);
        }

        .team-member:hover, .supervisor-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(10, 25, 47, 0.1);
        }

        .member-avatar, .supervisor-avatar {
            width: 120px;
            height: 120px;
            border-radius: 50%;
            background-color: var(--navy-lighter);
            margin: 0 auto 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 2.5rem;
            font-weight: 600;
            overflow: hidden;
        }

        .member-avatar img, .supervisor-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .member-name, .supervisor-name {
            font-size: 1.5rem;
            margin-bottom: 5px;
        }

        .member-role, .supervisor-role {
            color: var(--accent);
            font-weight: 500;
            margin-bottom: 15px;
        }

        /* Technologies Section */
        .tech-grid {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 30px;
            margin-top: 40px;
        }

        .tech-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 15px;
            padding: 30px;
            border-radius: 12px;
            background-color: var(--white);
            box-shadow: 0 10px 30px rgba(10, 25, 47, 0.05);
            transition: var(--transition);
            width: 160px;
            opacity: 0;
            transform: translateY(30px);
        }

        .tech-item.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .tech-item:hover {
            transform: translateY(-10px) scale(1.05);
            box-shadow: 0 20px 40px rgba(10, 25, 47, 0.1);
        }

        .tech-icon {
            font-size: 3rem;
            color: var(--navy);
        }

        .tech-name {
            font-weight: 600;
            color: var(--navy);
        }

        /* Footer */
        footer {
            background-color: var(--navy);
            color: var(--white);
            padding: 70px 0 30px;
        }

        .footer-content {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 40px;
        }

        .footer-logo {
            height: 50px;
            width: auto;
        }

        .footer-text {
            text-align: center;
            max-width: 600px;
            color: var(--gray);
        }

        .copyright {
            text-align: center;
            margin-top: 50px;
            padding-top: 30px;
            border-top: 1px solid var(--navy-lighter);
            color: var(--gray);
            font-size: 0.9rem;
        }

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

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

        /* Responsive Styles */
        @media (max-width: 768px) {
        .hero-grid {
            grid-template-columns: 1fr;
            text-align: center;
        }

        .hero-image {
            margin-top: 35px;
        }

        .hero-image img {
            max-width: 220px;
        }

        .hero-buttons {
            justify-content: center;
            flex-wrap: wrap;
        }
    }

        @media (max-width: 992px) {
            .hero-title {
                font-size: 2.8rem;
            }
            
            .section-title {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .navbar {
                padding: 15px 0;
            }
            
            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: rgba(255, 255, 255, 0.98);
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 10px 30px rgba(10, 25, 47, 0.1);
                text-align: center;
            }
            
            .nav-links.active {
                display: flex;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .hero-title {
                font-size: 2.3rem;
            }
            
            .hero-buttons {
                flex-direction: column;
                align-items: flex-start;
            }
            
            .section {
                padding: 70px 0;
            }
            
            .section-title {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 480px) {
            .hero-title {
                font-size: 2rem;
            }
            
            .btn {
                padding: 12px 24px;
                width: 100%;
                text-align: center;
            }
            
            .card-title {
                font-size: 1.3rem;
            }
            
            .member-avatar, .supervisor-avatar {
                width: 100px;
                height: 100px;
            }
        }