:root {
            --bg-color-light: #f7fafc;
            --text-primary-light: #2d3748;
            --text-secondary-light: #718096;
            --card-bg-light: #ffffff;
            --card-border-light: #e2e8f0;
            --accent-color: #319795;
            --accent-hover: #2c7a7b;
            
            --bg-color-dark: #1a202c;
            --text-primary-dark: #edf2f7;
            --text-secondary-dark: #a0aec0;
            --card-bg-dark: #2d3748;
            --card-border-dark: #4a5568;
        }
        
        body {
            font-family: 'Source Sans Pro', 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
            transition: background-color 0.5s, color 0.5s;
            cursor: none;
        }

        .light-theme {
            --bg-color: var(--bg-color-light);
            --text-primary: var(--text-primary-light);
            --text-secondary: var(--text-secondary-light);
            --card-bg: var(--card-bg-light);
            --card-border: var(--card-border-light);
            --header-bg: rgba(255, 255, 255, 0.8);
        }

        .dark-theme {
            --bg-color: var(--bg-color-dark);
            --text-primary: var(--text-primary-dark);
            --text-secondary: var(--text-secondary-dark);
            --card-bg: var(--card-bg-dark);
            --card-border: var(--card-border-dark);
            --header-bg: rgba(26, 32, 44, 0.8);
        }

        body {
            background-color: var(--bg-color);
            color: var(--text-primary);
        }
        
        #header {
            background-color: var(--header-bg);
        }

        .nav-link {
            position: relative;
            transition: color 0.3s;
            color: var(--text-secondary);
        }
        .nav-link:hover {
            color: var(--accent-color);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: -4px;
            left: 50%;
            background-color: var(--accent-color);
            transition: all 0.3s ease-in-out;
        }
        .nav-link:hover::after {
            width: 100%;
            left: 0;
        }
        /* Active state for current section link */
        .nav-active {
            color: var(--accent-color) !important;
        }
        .nav-active::after {
            width: 100% !important;
            left: 0 !important;
        }
        /* Brand name font */
        .brand-name {
            font-family: 'Playfair Display', 'EB Garamond', Georgia, serif;
            font-weight: 700;
            letter-spacing: 0.3px;
        }
        
        #hero {
            position: relative;
            overflow: hidden;
            background-color: #111827;
        }

        #hero-canvas {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 1;
        }
        #hero .container {
            position: relative;
            z-index: 2;
        }

        #hero h1, #hero h2, #hero p {
            text-shadow: 0 2px 4px rgba(0,0,0,0.5);
        }
        
        .section-heading {
            position: relative;
            padding-bottom: 0.75rem;
            color: var(--text-primary);
        }
    /* Headline typography */
    h1, h2, h3, h4, h5, h6, .section-heading {
            font-family: 'Playfair Display', 'Times New Roman', serif;
        }
        .section-heading::after {
            content: '';
            position: absolute;
            width: 50px;
            height: 3px;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            background-color: var(--accent-color);
        }

        /* Alternate letterforms for the About quote */
        .quote-letterforms {
            font-family: 'EB Garamond', 'Times New Roman', serif;
            font-style: italic;
            font-variant-ligatures: common-ligatures discretionary-ligatures;
            font-feature-settings: "liga" 1, "kern" 1;
            letter-spacing: 0.2px;
        }
        
    .project-card, .writing-card, .skill-category, .certification-card {
            background-color: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: 0.75rem;
            transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
            position: relative;
            text-decoration: none;
        }
        .project-card, .certification-card {
            cursor: pointer;
        }
        .project-card:hover, .certification-card:hover {
            box-shadow: 0 6px 18px rgba(0,0,0,0.08);
            transform: translateY(-4px) scale(1.01);
            border-color: var(--accent-color);
        }
        /* Scale image only; wrapper remains as a clipping mask */
        .project-card .overflow-hidden img, .certification-card .overflow-hidden img {
            transition: transform 0.4s ease-out;
            display: block;
        }


    /* Theme Toggle Switch styles */
        .project-card:hover .overflow-hidden img, .certification-card:hover .overflow-hidden img {
            transform: scale(1.05);
        }
        /* Unified subtle hover above; removed duplicate heavier hover state */
        
        .modal-overlay {
            transition: opacity 0.3s ease-in-out;
        }
        .modal-content {
            background-color: var(--card-bg);
            transition: transform 0.3s ease-in-out, opacity 0.3s ease-in-out;
        }
        .prose h3 {
            color: var(--text-primary);
        }
        .prose p, .prose ul li {
            color: var(--text-secondary);
        }

    /* Drawer nav aesthetics */
        .drawer-link {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 0.75rem;
        }
        .drawer-link svg {
            opacity: 0.4;
            transition: transform 0.2s ease, opacity 0.2s ease;
        }
        .drawer-link:hover svg { opacity: 0.7; transform: translateX(2px); }
        .drawer-link.nav-active { background-color: rgba(49,151,149,0.08); }
        .drawer-link.nav-active svg { opacity: 0.9; }

        /* Drawer chip style to mirror Technical Skills pills */
        .drawer-chip {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 0.75rem;
            border: 1px solid var(--card-border);
            border-radius: 9999px;
            background: var(--card-bg);
            color: var(--text-primary);
            text-decoration: none;
            transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
        }
    .drawer-chip:hover { transform: translateY(-1px); box-shadow: 0 8px 14px rgba(0,0,0,0.08); }
    .chip-dot { width: 8px; height: 8px; border-radius: 9999px; opacity: 0.9; }

    /* Variants to match Technical Skills colors */
    .drawer-chip[data-variant="teal"] { border-color: #10b981; background-color: rgba(16,185,129,0.10); }
    .drawer-chip[data-variant="teal"]:hover { background-color: rgba(16,185,129,0.16); }
    .drawer-chip[data-variant="teal"] .chip-dot { background: #10b981; }
    .drawer-chip.nav-active[data-variant="teal"] { background-color: rgba(16,185,129,0.20); border-color: #10b981; }

    .drawer-chip[data-variant="blue"] { border-color: #3b82f6; background-color: rgba(59,130,246,0.10); }
    .drawer-chip[data-variant="blue"]:hover { background-color: rgba(59,130,246,0.16); }
    .drawer-chip[data-variant="blue"] .chip-dot { background: #3b82f6; }
    .drawer-chip.nav-active[data-variant="blue"] { background-color: rgba(59,130,246,0.20); border-color: #3b82f6; }

    .drawer-chip[data-variant="amber"] { border-color: #f59e0b; background-color: rgba(245,158,11,0.10); }
    .drawer-chip[data-variant="amber"]:hover { background-color: rgba(245,158,11,0.16); }
    .drawer-chip[data-variant="amber"] .chip-dot { background: #f59e0b; }
    .drawer-chip.nav-active[data-variant="amber"] { background-color: rgba(245,158,11,0.20); border-color: #f59e0b; }

    .drawer-chip[data-variant="purple"] { border-color: #a855f7; background-color: rgba(168,85,247,0.10); }
    .drawer-chip[data-variant="purple"]:hover { background-color: rgba(168,85,247,0.16); }
    .drawer-chip[data-variant="purple"] .chip-dot { background: #a855f7; }
    .drawer-chip.nav-active[data-variant="purple"] { background-color: rgba(168,85,247,0.20); border-color: #a855f7; }

        /* Drawer accent borders and profile pill */
        .drawer-accent-border { border-color: var(--accent-color) !important; }
    .drawer-profile {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 0.75rem;
            border: 1px solid var(--accent-color);
            border-radius: 9999px;
            background: rgba(49,151,149,0.06);
              color: var(--text-primary);
                text-decoration: none;
        }
    .drawer-profile .name { font-size: 0.95rem; }
        .drawer-handle {
            font-size: 0.75rem;
            color: var(--text-secondary);
            background: rgba(49,151,149,0.12);
            padding: 2px 8px;
            border-radius: 9999px;
            border: 1px solid rgba(49,151,149,0.25);
        }

        /* Narrow phones: compress chips a bit */
        @media (max-width: 380px) {
            .drawer-chip { padding: 0.4rem 0.6rem; gap: 0.4rem; }
        }
        /* Top sheet animation helper */
        #mobile-sheet { will-change: max-height; background: var(--card-bg); }
        @media (prefers-reduced-motion: reduce) {
            #mobile-sheet { transition: none !important; }
        }
        @media (max-width: 360px) { 
              /* Keep the handle visible on very small screens; just shrink it a bit */
            .drawer-handle { display: inline-block; font-size: 0.7rem; padding: 1px 6px; }
            .drawer-profile .name { font-size: 0.875rem; }
        }
    

        


        /* Animation Styles */
        .animate-on-scroll {
            opacity: 0;
            transform: translateY(16px);
            transition: opacity 0.6s ease-out, transform 0.6s ease-out;
        }
        .animate-on-scroll.is-visible {
            opacity: 1;
            transform: translateY(0);
        }
        @media (prefers-reduced-motion: reduce) {
            .animate-on-scroll {
                transition: none;
            }
        }

        /* Preloader Styles */
        #preloader {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: #1a202c; /* Default to dark for preloader */
            z-index: 9999;
            display: flex;
            justify-content: center;
            align-items: center;
            transition: opacity 0.5s ease-out;
        }
        .light-theme #preloader {
             background-color: #f7fafc;
        }
        .spinner {
            width: 50px;
            height: 50px;
            border: 5px solid #ccc;
            border-top-color: var(--accent-color);
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }
        @keyframes spin {
            to { transform: rotate(360deg); }
        }

        /* Typewriter effect */
        .typewriter-cursor {
            display: inline-block;
            width: 3px;
            height: 2.5rem;
            background-color: white;
            animation: blink 0.7s infinite;
            margin-left: 5px;
            vertical-align: middle;
        }
        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0; }
        }

    /* Cursor Canvas */
    #cursor-canvas { position: fixed; inset: 0; pointer-events: none; z-index: 10000; }
    .hide-native-cursor { cursor: none; }

        /* Section Divider Style (subtle dotted background) */
        .section-divided {
            /* theme-aware dot color via CSS var */
            --dot-color: rgba(255,255,255,0.10);
            background-image: radial-gradient(var(--dot-color) 1.5px, transparent 1.5px);
            background-size: 28px 28px; /* spacing */
            background-position: 0 0;
        }
        body.light-theme .section-divided { --dot-color: rgba(17,24,39,0.12); }
        body.dark-theme .section-divided { --dot-color: rgba(255,255,255,0.10); }

        @media (min-width: 1024px) { /* Only apply parallax on larger screens */
            .section-divided {
                background-attachment: fixed;
            }
        }

      

        /* Accessibility: Focus Indicator */
        :focus-visible {
            outline: 3px solid var(--accent-color);
            outline-offset: 4px;
            border-radius: 4px;
        }

        /* Social Links Bar */
        .social-link {
            position: relative;
            display: block;
            padding: 0.75rem;
            border-radius: 9999px;
            background-color: var(--card-bg);
            border: 1px solid var(--card-border);
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .social-link:hover {
            transform: scale(1.1);
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .social-link svg {
            width: 1.5rem;
            height: 1.5rem;
            color: var(--text-secondary);
            transition: color 0.3s;
        }
        .social-link:hover svg {
            color: var(--accent-color);
        }
        .social-tooltip {
            position: absolute;
            right: 100%;
            top: 50%;
            transform: translateY(-50%) scale(0);
            transform-origin: right;
            margin-right: 1rem;
            padding: 0.5rem 1rem;
            background-color: var(--text-primary);
            color: var(--bg-color);
            border-radius: 0.5rem;
            font-size: 0.875rem;
            font-weight: 600;
            white-space: nowrap;
            transition: transform 0.2s ease-in-out;
        }

        /* Skill chips */
        .skill-chip {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 10px;
            border-radius: 9999px;
            background-color: var(--bg-color);
            border: 1px solid var(--card-border);
            color: var(--text-primary);
            font-size: 0.9rem;
            line-height: 1;
            transition: transform .15s ease, box-shadow .2s ease, background-color .2s ease;
            cursor: pointer;
            user-select: none;
        }
    .skill-chip img { width: 16px; height: 16px; display: inline-block; }
         /* Level colors */
    .skill-chip[data-level="expert"] { border-color: #10b981; background-color: rgba(16,185,129,0.10); }
    .skill-chip[data-level="proficient"] { border-color: #3b82f6; background-color: rgba(59,130,246,0.10); }
    .skill-chip[data-level="familiar"] { border-color: #f59e0b; background-color: rgba(245,158,11,0.10); }
    .skill-chip[data-level="learning"] { border-color: #a855f7; background-color: rgba(168,85,247,0.10); }
        .skill-chip:hover { transform: translateY(-1px); box-shadow: 0 8px 14px rgba(0,0,0,0.08); }
        .skill-chip .level { font-style: normal; font-size: .75rem; color: var(--text-secondary); background: rgba(49,151,149,.12); padding: 3px 8px; border-radius: 9999px; }
        .skill-chip.muted { opacity: .85; cursor: default; }
        .skill-chip.active { outline: 2px solid var(--accent-color); outline-offset: 2px; }

        /* Project highlight when matching skills */
        .project-card.is-dimmed { opacity: .35; filter: grayscale(.2); }
        .project-card.is-highlight { box-shadow: 0 0 0 3px var(--accent-color); transform: translateY(-4px) scale(1.015); }

    /* removed unused skill-logo tooltip styles */
        /* Timeline Styles */
        .timeline {
            position: relative;
        }
        .timeline::before {
            content: "";
            display: block;
            width: 1px;
            height: 100%;
            background-color: var(--card-border);
            position: absolute;
            top: 0.5rem;
            left: 3px;
        }
        .timeline__block {
            position: relative;
            padding-left: 2.5rem;
            padding-bottom: 2rem;
        }
        .timeline__block:last-child {
            padding-bottom: 0;
        }
        .timeline__bullet {
            display: block;
            height: 1rem;
            width: 1rem;
            border-radius: 50%;
            background-color: var(--accent-color);
            border: 4px solid var(--card-bg);
            position: absolute;
            top: 0.25rem;
            left: -0.375rem;
        }
        .timeline__title {
            font-weight: 600;
            font-size: 1.125rem;
            margin-bottom: 0.25rem;
        }
        .timeline__meta {
            font-size: 1rem;
            margin-bottom: 0.25rem;
            color: var(--text-secondary);
        }
        .timeline__timeframe {
            font-size: 0.75rem;
            text-transform: uppercase;
            letter-spacing: .1em;
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }
        .timeline__desc p {
            color: var(--text-secondary);
        }
    

        /* Gradient Background for Light Mode */
        .light-theme #contact {
            background: linear-gradient(135deg, #f7fafc 0%, #e6fffa 100%);
        }

        /* Spotlight Effect */
        #spotlight {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: #000;
            z-index: 9998;
            pointer-events: none;
            opacity: 0;
            transition: opacity 0.5s;
            mask: radial-gradient(circle 6cm at var(--mouse-x) var(--mouse-y), transparent 0%, black 100%);
            -webkit-mask: radial-gradient(circle 6cm at var(--mouse-x) var(--mouse-y), transparent 0%, black 100%);
        }
        body.spotlight-active #spotlight { opacity: 1; }

    
        /* Matrix overlay effect (color by default; matrix on hover) */
        .photo-matrix { position: relative; overflow: hidden; border-radius: inherit; }
        .photo-matrix::after {
            /* green tint + scanlines */
            content: "";
            position: absolute;
            inset: 0;
            pointer-events: none;
            opacity: 0;
            transition: opacity 0.35s ease;
            background:
                /* subtle green tint */
                linear-gradient(rgba(16,185,129,0.08), rgba(16,185,129,0.08)),
                /* scanlines */
                repeating-linear-gradient(to bottom, rgba(16,185,129,0.16) 0 1px, transparent 1px 3px);
            mix-blend-mode: multiply;
        }
        .photo-matrix::before {
            /* moving sweep */
            content: "";
            position: absolute;
            left: 0; right: 0; top: -60%; bottom: -60%;
            pointer-events: none;
            opacity: 0;
            background: linear-gradient(to bottom, rgba(16,185,129,0), rgba(16,185,129,0.35), rgba(16,185,129,0));
            transform: translateY(-100%);
        }
        .photo-matrix:hover::after { opacity: 1; }
        .photo-matrix:hover::before { opacity: 1; animation: matrix-sweep 1.25s linear infinite; }
        @keyframes matrix-sweep { to { transform: translateY(100%); } }

        /* Responsive tweaks for small devices (approx 4"–7") */
        @media (max-width: 360px) { /* ~4" devices */
            #hero { padding-top: 4.5rem; padding-bottom: 4.5rem; }
            #hero h1 { font-size: 1.9rem; }
            #hero #typewriter { font-size: 1.1rem; }
            #about, #projects, #certifications, #hackathons, #skills, #contact { padding-top: 3.5rem; padding-bottom: 3.5rem; }
            /* Reduce thumbnail heights for tighter layout */
            .project-card .h-40 { height: 8rem !important; }
            .certification-card .h-36 { height: 7.5rem !important; }
            /* Tighten container side padding */
            .container { padding-left: 1rem; padding-right: 1rem; }
        }
        @media (max-width: 400px) { /* compact phones */
            #hero h1 { font-size: 2.1rem; }
            #hero #typewriter { font-size: 1.2rem; }
        }
        @media (max-width: 480px) { /* ~5" phones */
            #hero { padding-top: 5rem; padding-bottom: 5rem; }
            .project-card .h-40 { height: 9rem !important; }
            .certification-card .h-36 { height: 8.5rem !important; }
        }
        @media (max-width: 640px) { /* ~6" phones */
            #hero h1 { font-size: 2.4rem; }
            #hero #typewriter { font-size: 1.25rem; }
        }
        @media (max-width: 768px) { /* ~7" small tablets */
            #about, #projects, #certifications, #hackathons, #skills, #contact { padding-top: 4rem; padding-bottom: 4rem; }
        }