:root {
            --bg: #0b0d10;
            --card: rgba(255, 255, 255, 0.04);
            --accent1: #2aa0ff;
            --accent2: #70c3ff;
            --muted: #cfcfcf;
            /* Vibrant Primary Purple/Blue/Cyan Gradient */
            --color-primary-start: #0066CC;
            --color-primary-end: #33CCFF;
            --gradient-primary: linear-gradient(90deg, var(--color-primary-start), var(--color-primary-end));
            --shadow-primary-glow: 0 0 25px rgba(22, 10, 122, 0.8), 0 0 60px rgba(0, 229, 255, 0.6);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Inter', sans-serif;
        }

        body {
            background: #0c0c0f;
            color: #e5e5e5;
            overflow-x: hidden;
        }

        a {
            color: #67b3ff;
            text-decoration: none;
        }

        a:hover {
            color: #a8d6ff;
        }
        body::-webkit-scrollbar {
            width: 10px;
        }

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

        body::-webkit-scrollbar-thumb {
            /* FIXED: Use the new vertical gradient variable */
            background: var(--accent1);
            border-radius: 6px;
            border: 3px solid var(--accent1); /*Creates space around thumb*/
        }

        header {
            width: 100%;
            padding: 1.5rem 3rem;
            position: fixed;
            top: 0;
            left: 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            backdrop-filter: blur(16px);
            background: rgba(10, 10, 10, 0.55);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            z-index: 1000;
        }

        nav a {
            margin-left: 1.7rem;
            font-weight: 600;
        }

        .btn {
            display: inline-block;
            padding: 0.85rem 1.6rem;
            border-radius: 10px;
            font-weight: 700;
            cursor: pointer;
            border: 0
        }

        .btn-primary {
            background: linear-gradient(90deg, var(--accent1), var(--accent2));
            color: #05121b;
            box-shadow: 0 12px 30px rgba(50, 140, 255, 0.12)
        }

        .btn-ghost {
            background: transparent;
            color: var(--muted);
            border: 1px solid rgba(255, 255, 255, 0.06)
        }

        /* ------------------ MOBILE NAV ------------------ */
        .hamburger {
            display: none;
            width: 32px;
            height: 24px;
            flex-direction: column;
            justify-content: space-between;
            cursor: pointer;
            z-index: 2000;
        }

        .hamburger span {
            width: 100%;
            height: 3px;
            background: #70c3ff;
            border-radius: 4px;
            transition: 0.3s ease;
        }

        /* sliding nav */
        header nav {
            display: flex;
            gap: 1.2rem;
        }

        /* HERO */
        #hero-section {
            height: 100vh;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 8rem 5rem 3rem;
            position: relative;
        }

        #particles-js {
            position: absolute;
            inset: 0;
            z-index: -1;
        }

        .hero-text {
            max-width: 600px;
            animation: fadeIn 1.3s ease;
        }

        .hero-text h1 {
            font-size: 3.5rem;
            font-weight: 800;
            line-height: 1.2;
            background: linear-gradient(90deg, #2aa0ff, #70c3ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-text p {
            margin-top: 1.2rem;
            font-size: 1.2rem;
            opacity: 0.85;
        }

        .hero-buttons {
            margin-top: 2rem;
            display: flex;
            gap: 1.5rem;
        }

        .btn-main {
            background: linear-gradient(90deg, #2aa0ff, #70c3ff);
            padding: 0.9rem 2rem;
            border-radius: 10px;
            color: white;
            font-weight: 600;
            box-shadow: 0 0 20px rgba(50, 140, 255, 0.4);
        }

        #contact-button {
            /* margin-top: 2rem; */
            padding: 1rem 3rem;
            background: var(--gradient-primary);
            color: #fff;
            border-radius: 50px;
            font-weight: 700;
            box-shadow: 0 0 15px rgba(0, 229, 255, 0.5);
            transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
            position: relative;
            overflow: hidden;
            z-index: 1;
        }

        #contact-button::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: rgba(255, 255, 255, 0.2);
            transition: all 0.5s;
            z-index: -1;
            transform: skewX(-20deg);
        }

        #contact-button:hover::before {
            left: 100%;
        }

        #contact-button:hover {
            transform: translateY(-5px) scale(1.02);
            box-shadow: var(--shadow-primary-glow);
        }


        /* HERO CAROUSEL */
        .hero-carousel {
            position: relative;
            width: 640px;
            height: 480px;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 20px 40px rgba(50, 140, 255, 0.25);
            animation: subtleGlow 6s infinite alternate;
        }

        .hero-carousel img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0;
            transform: translateX(40px) scale(1.03);
            animation: sliderFade 12s infinite;
            border-radius: 16px;
        }

        /* sequence delays */
        .hero-carousel img:nth-child(1) {
            animation-delay: 0s;
        }

        .hero-carousel img:nth-child(2) {
            animation-delay: 4s;
        }

        .hero-carousel img:nth-child(3) {
            animation-delay: 8s;
        }

        /* fade + slide animation */
        @keyframes sliderFade {
            0% {
                opacity: 0;
                transform: translateX(40px) scale(1.03);
            }

            10% {
                opacity: 1;
                transform: translateX(0) scale(1);
            }

            30% {
                opacity: 1;
                transform: translateX(0) scale(1);
            }

            40% {
                opacity: 0;
                transform: translateX(-40px) scale(0.97);
            }

            100% {
                opacity: 0;
            }
        }

        @keyframes subtleGlow {
            from {
                box-shadow: 0 10px 30px rgba(50, 140, 255, 0.2);
            }

            to {
                box-shadow: 0 15px 50px rgba(50, 140, 255, 0.35);
            }
        }

        /* SECTIONS */
        section {
            max-width: 1200px;
            margin: auto;
            padding: 5rem 2rem;
        }

        section h2 {
            font-size: 2.4rem;
            font-weight: 700;
            margin-bottom: 2rem;
            background: linear-gradient(90deg, #2aa0ff, #70c3ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            border-bottom: 2px solid #2aa0ff;
            display: inline-block;
            padding-bottom: 0.4rem;
        }

        /* FEATURES GRID */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 1.8rem;
        }

        .glass-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.07);
            padding: 2rem;
            border-radius: 16px;
            backdrop-filter: blur(12px);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.25);
            transition: 0.3s;
        }

        .glass-card:hover {
            transform: translateY(-6px);
            border-color: rgba(50, 140, 255, 0.45);
            box-shadow: 0 12px 35px rgba(50, 140, 255, 0.35);
        }

        .glass-card h3 {
            margin-bottom: 0.6rem;
            color: #70c3ff;
        }


        /* about: skills + timeline */
        #about {
            padding-top: 40px;
        }

        .about {
            padding: 2rem;
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            gap: 2.5rem;
            flex-wrap: wrap;
            align-items: flex-start
        }

        .skills-col {
            flex: 1 1 360px;
            min-width: 300px
        }

        .timeline-col {
            flex: 1 1 460px;
            min-width: 300px
        }

        .about p {
            color: var(--muted);
            margin-bottom: 1rem
        }

        .skills-title {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 0.9rem;
            color: var(--accent2)
        }

        .skills-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(84px, 1fr));
            gap: 1.25rem
        }

        .skill-coin {
            width: 84px;
            height: 84px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--card);
            background-color: #154368;
            border: 2px solid rgba(80, 160, 255, 0.12);
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.6);
            transition: transform 180ms ease, box-shadow 180ms ease;
            transform-style: preserve-3d;
            perspective: 900px;
            cursor: pointer;
            position: relative;
            overflow: hidden
        }

        .skill-coin img {
            width: 56%;
            height: 56%;
            object-fit: contain;
            z-index: 2;
            pointer-events: none
        }

        .skill-coin::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(0, 0, 0, 0.06));
            border-radius: 50%;
            pointer-events: none
        }

        .skill-coin.tilt {
            transform: rotateX(var(--rx)) rotateY(var(--ry)) scale(1.08);
            box-shadow: 0 22px 50px rgba(50, 140, 255, 0.28)
        }

        .skill-text-backup {
            display: none;
            font-size: 14px;
            font-weight: 600;
            color: #70c3ff;
            z-index: 2;
        }

        .skill-coin.no-icon img {
            display: none;
        }

        .skill-coin.no-icon .skill-text-backup {
            display: block;
        }


        .skill-label {
            position: absolute;
            bottom: -28px;
            left: 50%;
            transform: translateX(-50%);
            background: rgba(10, 20, 30, 0.8);
            color: var(--muted);
            font-size: 12px;
            padding: 6px 8px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.04);
            opacity: 0;
            transition: all 160ms ease
        }

        .skill-coin:hover .skill-label {
            bottom: -36px;
            opacity: 1
        }

        /* timeline alternating */
        .timeline-wrap {
            position: relative;
            padding: 20px 12px 12px 12px;
            margin-top: 6px
        }

        .timeline-wrap::before {
            content: '';
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            top: 0;
            bottom: 0;
            width: 4px;
            background: linear-gradient(180deg, rgba(50, 140, 255, 0.38), rgba(112, 195, 255, 0.18));
            border-radius: 6px
        }

        .tl-item {
            position: relative;
            width: 50%;
            padding: 12px 20px;
            box-sizing: border-box;
            opacity: 0.35;
            transform: translateY(10px);
            transition: all 420ms cubic-bezier(.2, .9, .2, 1);
            margin: 28px 0
        }

        .tl-item.active {
            opacity: 1;
            transform: translateY(0)
        }

        .tl-left {
            left: 0;
            text-align: right;
        }

        .tl-right {
            left: 50%;
            text-align: left;
        }

        .tl-item .tl-box {
            display: inline-block;
            padding: 12px 16px;
            background: var(--card);
            border: 1px solid rgba(255, 255, 255, 0.04);
            border-radius: 10px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5)
        }

        .tl-dot {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--accent1);
            box-shadow: 0 0 16px rgba(50, 140, 255, 0.7)
        }


        /* PROJECTS */
        .project-card {
            background-size: cover;
            background-position: center;
            height: 340px;
            border-radius: 16px;
            overflow: hidden;
            position: relative;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
            cursor: pointer;
            transition: 0.4s;
            margin-bottom: 2rem;
        }

        .project-card:hover {
            transform: scale(1.03);
            box-shadow: 0 14px 40px rgba(30, 144, 255, 0.4);
        }

        .project-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, rgba(0, 0, 0, 0) 10%, rgba(0, 0, 0, 0.75));
            padding: 1.5rem;
            display: flex;
            align-items: flex-end;
        }

        .project-overlay h3 {
            color: #fff;
            margin-bottom: 0.3rem;
        }

        .project-overlay p {
            opacity: .85;
        }

        footer {
            text-align: center;
            padding: 2rem;
            opacity: 0.7;
            margin-top: 5rem;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(-20px);
            }

            to {
                opacity: 1;
            }
        }

        /*small width mobile*/
        @media (max-width: 400px) {
            #hero-section h1 {
                font-size: 1.4rem;
                /* or whatever size you want */
            }

        }


        /* MOBILE MODE */
        @media (max-width: 1000px) {

            #hero-section h1 {
                font-size: 2.8rem;
                /* or whatever size you want */
            }

            header {
                padding: 1.2rem 1.4rem;
            }

            .hamburger {
                display: flex;
            }

            header nav {
                position: absolute;
                top: 72px;
                /* below fixed header */
                right: 0;
                width: 100%;
                display: flex;
                flex-direction: column;
                padding: 1.2rem 0;
                background: rgba(10, 10, 15, 0.9);
                backdrop-filter: blur(12px);
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);

                transform: translateY(-120%);
                opacity: 0;
                visibility: hidden;
                transition: all 0.35s ease;
            }

            /* when open */
            header nav.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }

            header nav a {
                padding: 12px 20px;
                text-align: center;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }

            /* hamburger animation */
            .hamburger.active span:nth-child(1) {
                transform: translateY(10px) rotate(45deg);
            }

            .hamburger.active span:nth-child(2) {
                opacity: 0;
            }

            .hamburger.active span:nth-child(3) {
                transform: translateY(-10px) rotate(-45deg);
            }

            .hero-carousel {
                display: none;
            }

            .hero-section {
                flex-direction: column;
                text-align: center;
                padding: 0 0.2rem;
            }
        }