@font-face {
            font-family: 'Fira Code';
            src: url('/fonts/webfonts/FiraCode/FiraCode-Regular.woff2') format('woff2');
            font-weight: 400;
            font-style: normal;
            font-display: swap;
        }
        @font-face {
            font-family: 'Fira Code';
            src: url('/fonts/webfonts/FiraCode/FiraCode-Medium.woff2') format('woff2');
            font-weight: 500;
            font-style: normal;
            font-display: swap;
        }
        @font-face {
            font-family: 'Fira Code';
            src: url('/fonts/webfonts/FiraCode/FiraCode-SemiBold.woff2') format('woff2');
            font-weight: 600;
            font-style: normal;
            font-display: swap;
        }
        @font-face {
            font-family: 'Fira Code';
            src: url('/fonts/webfonts/FiraCode/FiraCode-Bold.woff2') format('woff2');
            font-weight: 700;
            font-style: normal;
            font-display: swap;
        }

        @font-face {
            font-family: 'Roboto';
            src: url('/fonts/webfonts/Roboto/Roboto-Regular.woff2') format('woff2');
            font-weight: 400;
            font-style: normal;
            font-display: swap;
        }
        @font-face {
            font-family: 'Roboto';
            src: url('/fonts/webfonts/Roboto/Roboto-Medium.woff2') format('woff2');
            font-weight: 500;
            font-style: normal;
            font-display: swap;
        }
        @font-face {
            font-family: 'Roboto';
            src: url('/fonts/webfonts/Roboto/Roboto-Bold.woff2') format('woff2');
            font-weight: 700;
            font-style: normal;
            font-display: swap;
        }

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

        html {
            scroll-padding-top: 100px; /* Offset for fixed navbar */
            color-scheme: dark;
        }

        body {
            font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
            background: #0a0a0a;
            color: #ffffff;
            font-size: 1.2rem;
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* Global paragraph alignment (Blocksatz) */
        p {
            text-align: justify;
            text-align-last: left;
            text-justify: inter-word;
            hyphens: auto;
            font-kerning: normal;
            font-variant-ligatures: common-ligatures;
        }

        /* Override for centered paragraphs */
        .hero p {
            text-align-last: center;
        }

        /* Animated background */
        .bg-animation {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            background: linear-gradient(45deg, #0a0a0a, #1a0f0a, #0a0a0a);
            background-size: 400% 400%;
            animation: gradientShift 15s ease infinite;
        }

        @keyframes gradientShift {
            0% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
            100% { background-position: 0% 50%; }
        }

        /* Floating particles */
        .particles {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            pointer-events: none;
            overflow: hidden;
        }

        .particle-lines {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
        }

        .particle {
            position: absolute;
            width: 6px;
            height: 6px;
            background: radial-gradient(circle at 30% 30%, rgba(255, 172, 102, 0.92), rgba(255, 140, 66, 0.28));
            border-radius: 50%;
            opacity: 0.65;
            mix-blend-mode: screen;
            will-change: transform;
            transition: opacity 0.3s ease;
        }

        nav {
            position: fixed;
            top: 0;
            width: 100%;
            padding: 16px 40px;
            backdrop-filter: blur(20px);
            background: rgba(10, 10, 10, 0.8);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            z-index: 1000;
            transition: all 0.3s ease;
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1200px;
            margin: 0 auto;
        }

        .logo {
            /* Scale with viewport and avoid wrapping */
            font-size: clamp(18px, 5.5vw, 35px);
            line-height: 1;
            font-weight: 700;
            color: #ff8c42;
            display: flex;
            align-items: center;
            gap: clamp(6px, 1.8vw, 10px);
            white-space: nowrap;
            flex-shrink: 1;
            min-width: 0;
            font-family: 'Cascadia Code', 'Fira Code', 'SF Mono', 'Monaco', 'Inconsolata', 'Consolas', monospace;
            text-decoration: none;
        }

        .logo-text {
            color: #ff8c42;
        }

        /* Animated logo letters (currently disabled)
        .logo-letter {
            display: inline-block;
            color: inherit;
            animation: letterHighlight 6s ease-in-out infinite;
        }

        @keyframes letterHighlight {
            0%, 33%, 100% {
                filter: brightness(1);
            }
            5% {
                filter: brightness(1.4);
            }
            16% {
                filter: brightness(1.4);
            }
        }
        */

        .logo-symbol {
            /* Tie symbol size to text for consistent scaling */
            height: 1.15em;
            width: auto;
            display: inline-block;
        }

        .nav-links {
            display: flex;
            gap: 30px;
            font-size: 1.25rem;
            font-family: 'Cascadia Code', 'Fira Code', 'SF Mono', 'Monaco', 'Inconsolata', 'Consolas', monospace;
            flex-wrap: nowrap;
            white-space: nowrap;
            align-items: center;
            flex: 0 0 auto;
        }

        .nav-control {
            display: flex;
            align-items: center;
            gap: 8px;
            opacity: 0.75;
            transition: opacity 0.2s ease;
            font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
            color: #d7875f;
        }

        .nav-control:hover { opacity: 1; }

        .nav-control label {
            font-size: 0.9rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: currentColor;
        }

        .nav-control input[type="range"] {
            width: 140px;
            accent-color: #d7875f;
            background: transparent;
        }

        .nav-control input[type="range"]::-webkit-slider-runnable-track {
            height: 4px;
            background: rgba(255, 255, 255, 0.25);
            border-radius: 2px;
        }

        .nav-control input[type="range"]::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: #d7875f;
            border: none;
            margin-top: -5px;
            box-shadow: 0 0 8px rgba(255, 140, 66, 0.45);
        }

        .nav-control input[type="range"]::-moz-range-track {
            height: 4px;
            background: rgba(255, 255, 255, 0.25);
            border-radius: 2px;
        }

        .nav-control input[type="range"]::-moz-range-thumb {
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: #d7875f;
            border: none;
            box-shadow: 0 0 8px rgba(255, 140, 66, 0.45);
        }

        /* hide gravity control earlier to reduce crowding */
        @media (max-width: 1100px) {
            .nav-control { display: none; }
        }

        .gravity-icon {
            width: 18px;
            height: 18px;
            display: inline-block;
            color: currentColor;
            filter: drop-shadow(0 0 6px rgba(255, 140, 66, 0.2));
        }

        .nav-links a {
            color: #ffffff;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s ease;
            position: relative;
            white-space: nowrap;
        }

        .nav-links a:hover {
            color: #d7875f;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: #d7875f;
            transition: width 0.3s ease;
        }

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

        /* Hamburger toggle (hidden by default) */
        .menu-toggle {
            display: none;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            padding: 8px 10px;
            border-radius: 10px;
            cursor: pointer;
            line-height: 0;
        }
        .menu-toggle .bar {
            width: 22px;
            height: 2px;
            background: #fff;
            display: block;
            margin: 5px 0;
            border-radius: 2px;
        }

        .hero {
            min-height: calc(75vh - 80px);
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 96px 20px 64px;
            position: relative;
        }

        .hero-content {
            max-width: 1200px;
            z-index: 1;
            font-size: 1.2rem;
            align-self: center;
            text-align: center;
        }

        .hero h1 {
            font-size: clamp(2.4rem, 6.4vw, 4.8rem);
            font-weight: 800;
            /*margin-top: 80px;*/
            margin-bottom: 16px;
            background: linear-gradient(45deg, #ffffff, #ff8c42, #ff6b1a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            animation: fadeInUp 1s ease;
            font-family: 'Cascadia Code', 'Fira Code', 'SF Mono', 'Monaco', 'Inconsolata', 'Consolas', monospace;
        }

        .hero p {
            font-size: 1.5rem;
            margin-bottom: 32px;
            opacity: 0.9;
            animation: fadeInUp 1s ease 0.2s both;
            text-align: center;
            font-family: 'Cascadia Code', 'Fira Code', 'SF Mono', 'Monaco', 'Inconsolata', 'Consolas', monospace;
        }

        .cta-button {
            display: inline-block;
            padding: 18px 40px;
            background: linear-gradient(45deg, #d7875f, #c56d47);
            color: #000;
            text-decoration: none;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.1rem;
            transition: all 0.3s ease;
            animation: fadeInUp 1s ease 0.4s both;
            box-shadow: 0 10px 30px rgba(255, 140, 66, 0.3);
        }

        .cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 40px rgba(255, 140, 66, 0.4);
        }

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

        .services {
            padding: 100px 20px;
            background: rgba(15, 15, 15, 0.5);
            backdrop-filter: blur(20px);
        }

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

        .services h2 {
            text-align: center;
            font-size: 3rem;
            margin-bottom: 60px;
            background: linear-gradient(45deg, #ffffff, #ff8c42);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            font-family: 'Cascadia Code', 'Fira Code', 'SF Mono', 'Monaco', 'Inconsolata', 'Consolas', monospace;
        }

        .challenge-solutions-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
        }

        .challenge-card {
            position: relative;
            display: block;
            background: linear-gradient(145deg, rgba(18, 14, 12, 0.92), rgba(12, 12, 12, 0.85));
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 24px;
            padding: 36px 40px;
            backdrop-filter: blur(16px);
            transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
        }

        .challenge-card:hover,
        .challenge-card:focus-within {
            transform: translateY(-6px);
            border-color: rgba(255, 140, 66, 0.75);
            box-shadow: 0 18px 40px rgba(255, 140, 66, 0.18);
            background: linear-gradient(145deg, rgba(28, 20, 16, 0.95), rgba(10, 10, 10, 0.88));
        }

        .challenge-card:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(255, 140, 66, 0.35);
        }

        .challenge-card summary {
            list-style: none;
            cursor: pointer;
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .challenge-card summary::-webkit-details-marker,
        .challenge-card summary::marker {
            display: none;
        }

        .challenge-card summary:focus-visible {
            outline: none;
        }

        .scenario-meta {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            letter-spacing: 0.08em;
            font-size: 0.85rem;
            text-transform: uppercase;
            color: rgba(255, 255, 255, 0.65);
        }

        .scenario-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(45deg, #d7875f, #c56d47);
            color: #000;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 12px 24px rgba(255, 140, 66, 0.18);
        }

        .scenario-meta span:last-child {
            font-weight: 600;
            color: rgba(255, 255, 255, 0.75);
        }

        .challenge-header {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .challenge-header h3 {
            margin: 0;
            color: #ffb37b;
            font-size: 1.55rem;
            font-family: 'Cascadia Code', 'Fira Code', 'SF Mono', 'Monaco', 'Inconsolata', 'Consolas', monospace;
        }

        .challenge-header p {
            margin: 0;
            opacity: 0.87;
        }

        .view-solution-hint {
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: rgba(255, 255, 255, 0.6);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .view-solution-hint::after {
            content: ' ->';
            transition: transform 0.3s ease;
        }

        .challenge-card[open] .view-solution-hint {
            color: rgba(255, 179, 123, 0.9);
        }

        .challenge-card[open] .view-solution-hint::after {
            transform: translateX(4px);
        }

        .challenge-solution {
            margin-top: 30px;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            flex-direction: column;
            gap: 16px;
            animation: fadeInSolution 0.35s ease;
        }

        @keyframes fadeInSolution {
            from {
                opacity: 0;
                transform: translateY(10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .solution-label {
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: rgba(255, 255, 255, 0.65);
        }

        .challenge-solution h4 {
            margin: 0;
            color: #d7875f;
            font-size: 1.35rem;
            font-family: 'Cascadia Code', 'Fira Code', 'SF Mono', 'Monaco', 'Inconsolata', 'Consolas', monospace;
        }

        .challenge-solution p {
            margin: 0;
            opacity: 0.9;
        }

        .expertise {
            padding: 32px 20px;
        }

        .expertise .container {
            display: flex;
            flex-direction: column;
            gap: 48px;
        }

        .expertise h2 {
            text-align: center;
            font-size: 3rem;
            background: linear-gradient(45deg, #ffffff, #ff8c42);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            font-family: 'Cascadia Code', 'Fira Code', 'SF Mono', 'Monaco', 'Inconsolata', 'Consolas', monospace;
        }

        .expertise-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 28px;
        }

        .expertise-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 20px;
            padding: 32px;
            backdrop-filter: blur(14px);
            transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .expertise-card:hover {
            transform: translateY(-6px);
            border-color: rgba(255, 140, 66, 0.6);
            box-shadow: 0 18px 36px rgba(255, 140, 66, 0.12);
        }

        .expertise-card h3 {
            font-size: 1.6rem;
            color: #ffb37b;
            margin-bottom: 16px;
            font-family: 'Cascadia Code', 'Fira Code', 'SF Mono', 'Monaco', 'Inconsolata', 'Consolas', monospace;
        }

        .expertise-card p {
            margin: 0;
            opacity: 0.85;
            font-size: 1.1rem;
        }

        .expertise-card ul {
            margin: 20px 0 0;
            padding-left: 20px;
            display: grid;
            gap: 10px;
            opacity: 0.85;
            font-size: 1.1rem;
        }

        .expertise-card ul li {
            list-style: none;
            position: relative;
        }

        .expertise-card ul li::before {
            content: '';
            position: absolute;
            left: -16px;
            top: 10px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: linear-gradient(45deg, #d7875f, #c56d47);
            box-shadow: 0 0 8px rgba(255, 140, 66, 0.5);
        }

        .about {
            padding: 100px 20px;
            text-align: center;
        }

        .about h2 {
            font-size: 3rem;
            margin-bottom: 30px;
            background: linear-gradient(45deg, #ffffff, #ff8c42);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            font-family: 'Cascadia Code', 'Fira Code', 'SF Mono', 'Monaco', 'Inconsolata', 'Consolas', monospace;
        }

        .about p {
            font-size: 1.2rem;
            max-width: 1200px;
            margin: 0 auto 40px;
            opacity: 0.9;
        }

        .stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-top: 60px;
            font-family: 'Cascadia Code', 'Fira Code', 'SF Mono', 'Monaco', 'Inconsolata', 'Consolas', monospace;
        }

        .stat {
            text-align: center;
        }

        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: #d7875f;
            display: block;
        }

        .stat-label {
            opacity: 0.8;
            margin-top: 10px;
        }

        .contact {
            padding: 100px 20px;
            background: rgba(15, 15, 15, 0.5);
            backdrop-filter: blur(20px);
            text-align: center;
        }

        .contact h2 {
            font-size: 3rem;
            margin-bottom: 30px;
            background: linear-gradient(45deg, #ffffff, #ff8c42);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            font-family: 'Cascadia Code', 'Fira Code', 'SF Mono', 'Monaco', 'Inconsolata', 'Consolas', monospace;
        }

        .contact-form {
            max-width: 600px;
            margin: 0 auto;
            display: grid;
            gap: 20px;
        }

        .form-group {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .contact-form input,
        .contact-form textarea {
            padding: 15px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 10px;
            color: #ffffff;
            font-size: 1rem;
            transition: all 0.3s ease;
        }

        .contact-form input:focus,
        .contact-form textarea:focus {
            outline: none;
            border-color: #ff8c42;
            background: rgba(255, 255, 255, 0.1);
        }

        .contact-form input::placeholder,
        .contact-form textarea::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .contact-form textarea {
            grid-column: 1 / -1;
            resize: vertical;
            min-height: 120px;
        }

        .submit-btn {
            background: linear-gradient(45deg, #d7875f, #c56d47);
            color: #000;
            border: none;
            padding: 15px 40px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            justify-self: center;
        }

        .submit-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(255, 140, 66, 0.3);
        }

        footer {
            padding: 40px 20px;
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            opacity: 0.7;
        }

        @media (max-width: 768px) {
            nav {
                padding: 12px 20px;
            }
            
            .hero h1 {
                font-size: 2.4rem;
            }
            
            .hero p {
                font-size: 1.2rem;
            }
            
            .hero {
                min-height: calc(100vh - 70px);
                padding: 112px 20px 48px;
            }

            .challenge-solutions-grid {
                gap: 24px;
            }

            .challenge-card {
                padding: 32px 28px;
            }

            .challenge-solution {
                margin-top: 24px;
                padding-top: 24px;
            }

            .expertise .container {
                gap: 36px;
            }

            .expertise-grid {
                gap: 20px;
            }
        
            .form-group {
                grid-template-columns: 1fr;
            }
        }

        /* Collapse into hamburger below 980px */
        @media (max-width: 980px) {
            .menu-toggle { display: inline-block; }
            .nav-links {
                display: none;
                position: fixed;
                top: 64px;
                right: 16px;
                left: 16px;
                flex-direction: column;
                gap: 16px;
                padding: 16px;
                background: rgba(10, 10, 10, 0.95);
                border: 1px solid rgba(255, 255, 255, 0.1);
                border-radius: 14px;
                z-index: 1100;
            }
            nav.menu-open .nav-links { display: flex; }
        }

        #particleCanvas {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;       /* push behind everything */
            pointer-events: none; /* clicks pass through */
            }