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

        :root {
            --mech-pink: #ff8599;
            --aero-blue: #3f7cff;
            --elec-lightblue: #7293d8;
            --bg-color: #0a0a0a;
            --text-primary: #ffffff;
            --text-secondary: #a0a0a0;
            --accent: #7293d8;
            --accent-hover: #0a0a0a;
            --border: #1f1f1f;
            --star-color: #ffffff;
            --meteorite-color: #8b5cf6;
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        /* Space Animation Background */
        .space-background {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            overflow: hidden;
        }

        .star {
            position: absolute;
            background: var(--star-color);
            border-radius: 50%;
            animation: twinkle 3s infinite ease-in-out;
        }

        .star.small {
            width: 2px;
            height: 2px;
        }

        .star.medium {
            width: 3px;
            height: 3px;
        }

        .star.large {
            width: 4px;
            height: 4px;
        }

        .meteorite {
            position: absolute;
            width: 2px;
            height: 2px;
            background: var(--meteorite-color);
            border-radius: 50%;
            box-shadow: 0 0 10px var(--meteorite-color);
        }

        .meteorite::before {
            content: '';
            position: absolute;
            top: 0;
            left: -20px;
            width: 20px;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--meteorite-color));
        }

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

        @keyframes meteorMove {
            0% {
                transform: translateX(-100px) translateY(100px);
                opacity: 0;
            }
            10% {
                opacity: 1;
            }
            90% {
                opacity: 1;
            }
            100% {
                transform: translateX(calc(100vw + 100px)) translateY(-100px);
                opacity: 0;
            }
        }

        @keyframes float {
            0%, 100% { transform: translateY(0px); }
            50% { transform: translateY(-10px); }
        }

        /* Navigation */
        nav {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(10, 10, 10, 0.8);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 2rem;
        }

        .logo {
            font-size: 1.2rem;
            font-weight: 600;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            text-decoration: none;
        }

        .nav-links {
            display: flex;
            gap: 2rem;
            list-style: none;
        }

        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.3s ease;
        }

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

        /* Page Header */
        .page-header {
            padding: 120px 0 80px;
            text-align: center;
            position: relative;
        }

        .page-header h1 {
            font-size: clamp(2.5rem, 5vw, 4rem);
            font-weight: 700;
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
            animation: float 6s ease-in-out infinite;
        }

        .page-header p {
            font-size: 1.2rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }

        /* Filter Navigation */
        .filter-nav {
            padding: 2rem 0;
            text-align: center;
        }

        .filter-buttons {
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .filter-btn {
            padding: 0.6rem 1.2rem;
            border-radius: 6px;
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .filter-btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(114, 147, 216, 0.1), transparent);
            transition: left 0.3s ease;
        }

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

        .filter-btn.active,
        .filter-btn:hover {
            border-color: var(--accent);
            color: var(--accent);
        }

        .filter-btn.aerospace.active {
            border-color: var(--aero-blue);
            color: var(--aero-blue);
        }

        .filter-btn.electrical.active {
            border-color: var(--elec-lightblue);
            color: var(--elec-lightblue);
        }

        .filter-btn.mechanical.active {
            border-color: var(--mech-pink);
            color: var(--mech-pink);
        }

        /* Projects Section */
        .projects-section {
            padding: 3rem 0 6rem;
        }

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

        .project-card {
            background: #111111;
            border: 1px solid var(--border);
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
            position: relative;
        }

        .project-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--accent), var(--meteorite-color));
            transform: scaleX(0);
            transition: transform 0.3s ease;
        }

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

        .project-card:hover {
            border-color: var(--accent);
            transform: translateY(-4px);
        }

        .project-image {
            height: 200px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }

        .project-card[data-category="aerospace"] .project-image {
            background: linear-gradient(135deg, var(--aero-blue), #2563eb);
        }

        .project-card[data-category="electrical"] .project-image {
            background: linear-gradient(135deg, var(--elec-lightblue), #5b8def);
        }

        .project-card[data-category="mechanical"] .project-image {
            background: linear-gradient(135deg, var(--mech-pink), #ff6b85);
        }

        .project-icon {
            width: 80px;
            height: 80px;
            color: white;
            z-index: 1;
        }

        .project-badge {
            position: absolute;
            top: 15px;
            right: 15px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(10px);
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            color: white;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .project-content {
            padding: 2rem;
        }

        .project-title {
            font-size: 1.4rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .project-category {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 6px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 1rem;
        }

        .project-category.aerospace {
            background: rgba(63, 124, 255, 0.15);
            color: var(--aero-blue);
            border: 1px solid rgba(63, 124, 255, 0.3);
        }

        .project-category.electrical {
            background: rgba(114, 147, 216, 0.15);
            color: var(--elec-lightblue);
            border: 1px solid rgba(114, 147, 216, 0.3);
        }

        .project-category.mechanical {
            background: rgba(255, 133, 153, 0.15);
            color: var(--mech-pink);
            border: 1px solid rgba(255, 133, 153, 0.3);
        }

        .project-description {
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .project-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-bottom: 1.5rem;
        }

        .project-tag {
            background: var(--border);
            color: var(--text-secondary);
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.8rem;
        }

        .project-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .project-date {
            font-size: 0.85rem;
            color: var(--text-secondary);
        }

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

        .project-link:hover {
            color: var(--text-primary);
        }

        .project-link svg {
            width: 16px;
            height: 16px;
            transition: transform 0.3s;
        }

        .project-link:hover svg {
            transform: translateX(3px);
        }

        /* Filter Animation */
        .project-card.hidden {
            display: none;
        }

        /* Footer */
        footer {
            padding: 2rem 0;
            text-align: center;
            border-top: 1px solid var(--border);
        }

        footer p {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }

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

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

            .page-header h1 {
                font-size: 2.5rem;
            }
        }

        /* Smooth scrolling */
        html {
            scroll-behavior: smooth;
        }

        /* Custom scrollbar */
        ::-webkit-scrollbar {
            width: 8px;
        }

        ::-webkit-scrollbar-track {
            background: var(--bg-color);
        }

        ::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 4px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-secondary);
        }
    </style>
</head>