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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background: #0a0a0f;
            min-height: 100vh;
        
            color: #fff;
            overflow-x: hidden;
        }

        .container {
            max-width: 100%;
            margin: 0 auto;
        }

        .header {
            text-align: center;
            margin-bottom: 25px;
        }

        h1 {
            font-size: clamp(1.5rem, 4vw, 2.5rem);
            font-weight: 700;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 8px;
        }

        .subtitle {
            color: #8b8b9e;
            font-size: clamp(0.9rem, 2vw, 1.1rem);
        }

        .stats-bar {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 15px;
            margin-bottom: 25px;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
        }

        .stat-card {
            background: linear-gradient(135deg, #1e1e2e 0%, #2a2a3e 100%);
            border-radius: 12px;
            padding: 15px;
            border: 1px solid rgba(255,255,255,0.1);
            text-align: center;
        }

        .stat-label {
            color: #8b8b9e;
            font-size: clamp(0.75rem, 1.5vw, 0.9rem);
            margin-bottom: 5px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .stat-value {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 700;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .keyboard-wrapper {
            display: flex;
            align-items: center;
            justify-content: center;
            width: fit-content;
            background: #1a1a24;
            border-radius: 15px;
            padding: clamp(15px, 3vw, 30px);
            border: 2px solid #2a2a3e;
            box-shadow: 0 20px 60px rgba(31, 31, 31, 0.6);
            max-width: 1600px;
            margin: 0 auto;
            overflow-x: auto;
        }

        .keyboard-layout {
            display: flex;
            gap: 15px;
            min-width: fit-content;
        }

        .main-keyboard {
            display: flex;
            flex-direction: column;
            gap: 5px;
        }

        .key-row {
            display: flex;
            gap: 4px;
        }

        .key {
            background: linear-gradient(145deg, #2d2d42, #1e1e2e);
            border: 1.5px solid rgba(255,255,255,0.12);
            border-radius: 4px;
            color: #e0e0e0;
            font-size: 11px;
            font-weight: 600;
            height: 48px;
            width: 48px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.12s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            box-shadow: 0 2px 4px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.08);
            user-select: none;
            white-space: nowrap;
            line-height: 1.1;
            padding: 2px;
        }

        .key-label {
            font-size: 0.85em;
        }

        .key-sublabel {
            font-size: 0.7em;
            opacity: 0.6;
            margin-top: 1px;
        }

        .key:active {
            transform: translateY(1px);
        }

        .key.pressed {
            background: linear-gradient(145deg, #10b981, #059669);
            border-color: #10b981;
            color: white;
            box-shadow: 0 0 15px rgba(16, 185, 129, 0.5);
            transform: translateY(1px);
        }

        .key.tested {
            background: linear-gradient(145deg, #3b82f6, #2563eb);
            border-color: #3b82f6;
            color: white;
        }

        /* Function row gaps */
        .fn-gap-small { width: 8px; }
        .fn-gap-large { width: 24px; }

        /* Key widths */
        .w-esc { width: 48px; }
        .w-fn { width: 48px; }
        .w-1 { width: 48px; }
        .w-1u25 { width: 62px; }
        .w-1u5 { width: 72px; }
        .w-1u75 { width: 84px; }
        .w-2 { width: 96px; }
        .w-2u25 { width: 108px; }
        .w-2u75 { width: 132px; }
        .w-space { width: 300px; }

        /* Right section layout */
        .right-section {
            display: flex;
            gap: 15px;
        }

        .nav-cluster {
            display: flex;
            flex-direction: column;
            gap: 5px;
        }

        .nav-row {
            display: flex;
            gap: 4px;
        }

        .arrow-cluster {
            display: flex;
            flex-direction: column;
            gap: 5px;
            margin-top: 58px;
        }

        .arrow-top {
            display: flex;
            justify-content: center;
        }

        .arrow-bottom {
            display: flex;
            gap: 4px;
        }

        /* Numpad */
        .numpad {
            display: flex;
            flex-direction: column;
            gap: 5px;
        }

        .numpad-row {
            display: flex;
            gap: 4px;
        }

        .numpad-row-tall {
            display: flex;
            gap: 4px;
            height: 101px;
        }

        .numpad-grid {
            display: grid;
            grid-template-columns: repeat(3, 48px);
            grid-template-rows: repeat(4, 48px);
            gap: 4px;
        }

        .numpad-tall-keys {
            display: flex;
            flex-direction: column;
            gap: 5px;
        }

        .key-numpad-plus {
            height: 101px;
            width: 48px;
        }

        .key-numpad-enter {
            height: 101px;
            width: 48px;
        }

        .key-numpad-0 {
            width: 100px;
        }

        .reset-btn {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            padding: clamp(12px, 2vw, 16px) clamp(30px, 5vw, 48px);
            font-size: clamp(0.95rem, 2vw, 1.1rem);
            font-weight: 600;
            border-radius: 10px;
            cursor: pointer;
            margin: 25px auto 0;
            display: block;
            box-shadow: 0 8px 24px rgba(102, 126, 234, 0.4);
            transition: all 0.3s;
        }

        .reset-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(102, 126, 234, 0.6);
        }

        .instructions {
            background: linear-gradient(135deg, #1e1e2e 0%, #2a2a3e 100%);
            border-radius: 12px;
            padding: 20px;
            margin-top: 25px;
            border: 1px solid rgba(255,255,255,0.1);
            text-align: center;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
        }

        .instructions h3 {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 10px;
            font-size: clamp(1.1rem, 2.5vw, 1.4rem);
        }

        .instructions p {
            color: #8b8b9e;
            line-height: 1.6;
            font-size: clamp(0.9rem, 2vw, 1.05rem);
        }

        @media (max-width: 1400px) {
            .keyboard-wrapper {
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
            }
        }

        @media (max-width: 768px) {
            body {
                padding: 10px 5px;
            }

            .keyboard-wrapper {
                padding: 15px 10px;
            }

            .stats-bar {
                gap: 10px;
            }

            .stat-card {
                padding: 12px 8px;
            }
        }