:root {
            /* Core cyberpunk palette */
            --bg-primary: #0a0a0f;
            --bg-secondary: #12121a;
            --bg-card: #16161f;
            --bg-card-hover: #1a1a25;

            /* Neon accents */
            --neon-cyan: #00f5ff;
            --neon-magenta: #ff00aa;
            --neon-purple: #8b5cf6;
            --neon-green: #00ff9d;
            --neon-blue: #3b82f6;
            --neon-slate: #64748b;
            --slate-accent: #94a3b8;
            --neon-orange: #ff6b35;

            /* Glow effects */
            --glow-cyan: rgba(0, 245, 255, 0.4);
            --glow-magenta: rgba(255, 0, 170, 0.4);
            --glow-purple: rgba(139, 92, 246, 0.4);
            --glow-green: rgba(0, 255, 157, 0.4);
            --glow-slate: rgba(100, 116, 139, 0.5);

            /* Text */
            --text-primary: #ffffff;
            --text-secondary: #a1a1aa;
            --text-muted: #71717a;

            /* Borders */
            --border-subtle: rgba(255, 255, 255, 0.06);
            --border-active: rgba(255, 255, 255, 0.12);
        }

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

        body {
            font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            min-height: 100vh;
            overflow-x: hidden;
            position: relative;
        }

        /* Animated grid background */
        .grid-bg {
            position: fixed;
            inset: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
            background-size: 60px 60px;
            mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 20%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }

        /* Ambient glow orbs */
        .glow-orb {
            position: fixed;
            border-radius: 50%;
            filter: blur(120px);
            opacity: 0.4;
            pointer-events: none;
            z-index: 0;
        }

        .glow-orb-1 {
            width: 500px;
            height: 500px;
            background: var(--neon-cyan);
            top: -150px;
            right: -100px;
            animation: float 20s ease-in-out infinite;
        }

        .glow-orb-2 {
            width: 400px;
            height: 400px;
            background: var(--neon-purple);
            bottom: -100px;
            left: -100px;
            animation: float 25s ease-in-out infinite reverse;
        }

        .glow-orb-3 {
            width: 300px;
            height: 300px;
            background: var(--neon-magenta);
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            opacity: 0.15;
            animation: pulse 8s ease-in-out infinite;
        }

        @keyframes float {
            0%, 100% { transform: translate(0, 0); }
            25% { transform: translate(-30px, 30px); }
            50% { transform: translate(20px, -20px); }
            75% { transform: translate(-20px, -30px); }
        }

        @keyframes pulse {
            0%, 100% {
                opacity: 0.15;
                transform: translate(-50%, -50%) scale(1);
            }
            50% {
                opacity: 0.25;
                transform: translate(-50%, -50%) scale(1.1);
            }
        }

        /* Scan lines effect overlay */
        .scanlines {
            position: fixed;
            inset: 0;
            pointer-events: none;
            z-index: 100;
            background: repeating-linear-gradient(0deg,
                    transparent,
                    transparent 2px,
                    rgba(0, 0, 0, 0.03) 2px,
                    rgba(0, 0, 0, 0.03) 4px);
            opacity: 0.5;
        }

        /* Main container */
        .main-container {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 2rem;
            position: relative;
            z-index: 1;
        }

        .login-wrapper {
            display: flex;
            align-items: center;
            gap: 4rem;
            max-width: 1000px;
            width: 100%;
        }

        /* 3D Illustration Side */
        .illustration-side {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }

        .iso-svg-login {
            width: 280px;
            height: 280px;
            filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.4));
        }

        .illustration-text {
            text-align: center;
            margin-top: 1.5rem;
        }

        .illustration-text h2 {
            font-size: 1.5rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--neon-cyan) 0%, var(--neon-purple) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 0.5rem;
        }

        .illustration-text p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            max-width: 300px;
        }

        /* Floating data cubes */
        .data-cube {
            position: absolute;
            width: 10px;
            height: 10px;
            background: var(--neon-cyan);
            opacity: 0.6;
            border-radius: 3px;
            animation: floatCube 4s ease-in-out infinite;
            box-shadow: 0 0 15px var(--glow-cyan);
        }

        .illustration-side .data-cube:nth-child(1) {
            top: 15%;
            right: 20%;
            animation-delay: 0s;
        }

        .illustration-side .data-cube:nth-child(2) {
            top: 35%;
            left: 10%;
            animation-delay: -1s;
            width: 6px;
            height: 6px;
            background: var(--neon-purple);
            box-shadow: 0 0 15px var(--glow-purple);
        }

        .illustration-side .data-cube:nth-child(3) {
            bottom: 25%;
            right: 15%;
            animation-delay: -2s;
            width: 8px;
            height: 8px;
        }

        @keyframes floatCube {
            0%, 100% {
                transform: translateY(0) rotate(0deg);
                opacity: 0.6;
            }
            50% {
                transform: translateY(-15px) rotate(180deg);
                opacity: 0.9;
            }
        }

        /* Login Form Side */
        .login-side {
            flex: 1;
            max-width: 420px;
        }

        /* Logo container */
        .logo-container {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 70px;
            height: 70px;
            border-radius: 18px;
            background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
            border: 1px solid var(--border-active);
            margin: 0 auto 1.5rem;
            position: relative;
            overflow: hidden;
        }

        .logo-container::before {
            content: '';
            position: absolute;
            inset: -2px;
            background: conic-gradient(from 180deg, var(--neon-cyan), var(--neon-purple), var(--neon-magenta), var(--neon-cyan));
            border-radius: 20px;
            z-index: -1;
            opacity: 0.6;
            animation: rotate 4s linear infinite;
        }

        @keyframes rotate {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }

        .logo-container img {
            width: 45px;
            height: 45px;
            object-fit: contain;
            border-radius: 10px;
        }

        .login-header {
            text-align: center;
            margin-bottom: 2rem;
        }

        .login-header h1 {
            font-size: 1.75rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, #fff 0%, #a1a1aa 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 0.5rem;
        }

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

        /* Login Card */
        .login-card {
            background: var(--bg-card);
            border-radius: 20px;
            padding: 2rem;
            border: 1px solid var(--border-subtle);
            backdrop-filter: blur(10px);
            box-shadow: 
                0 25px 50px -12px rgba(0, 0, 0, 0.5),
                0 0 0 1px rgba(255, 255, 255, 0.05);
            position: relative;
            overflow: hidden;
        }

        .login-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, transparent 40%, rgba(0, 245, 255, 0.03) 100%);
            pointer-events: none;
        }

        .card-header {
            text-align: center;
            margin-bottom: 1.5rem;
            position: relative;
            z-index: 2;
        }

        .card-header h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.25rem;
        }

        .card-header p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* Flash messages */
        .flash-message {
            padding: 0.875rem 1rem;
            border-radius: 10px;
            margin-bottom: 1.25rem;
            font-size: 0.85rem;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            position: relative;
            z-index: 2;
        }

        .flash-error {
            background: rgba(239, 68, 68, 0.15);
            border: 1px solid rgba(239, 68, 68, 0.3);
            color: #fca5a5;
        }

        .flash-success {
            background: rgba(34, 197, 94, 0.15);
            border: 1px solid rgba(34, 197, 94, 0.3);
            color: #86efac;
        }

        .flash-info {
            background: rgba(59, 130, 246, 0.15);
            border: 1px solid rgba(59, 130, 246, 0.3);
            color: #93c5fd;
        }

        /* Form styles */
        .login-form {
            position: relative;
            z-index: 2;
        }

        .form-group {
            margin-bottom: 1.25rem;
        }

        .form-label {
            display: block;
            font-size: 0.75rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--text-secondary);
            margin-bottom: 0.625rem;
        }

        .form-input {
            width: 100%;
            padding: 0.875rem 1rem;
            background: rgba(0, 0, 0, 0.3);
            border: 1px solid var(--border-subtle);
            border-radius: 10px;
            color: var(--text-primary);
            font-size: 0.9rem;
            font-family: inherit;
            transition: all 0.3s ease;
            outline: none;
        }

        .form-input::placeholder {
            color: var(--text-muted);
        }

        .form-input:focus {
            border-color: var(--neon-cyan);
            box-shadow: 0 0 0 3px rgba(0, 245, 255, 0.1), 0 0 20px rgba(0, 245, 255, 0.1);
        }

        /* Submit button */
        .submit-btn {
            width: 100%;
            padding: 0.875rem 1.5rem;
            margin-top: 0.5rem;
            background: linear-gradient(135deg, rgba(0, 245, 255, 0.15) 0%, rgba(0, 245, 255, 0.05) 100%);
            border: 1px solid rgba(0, 245, 255, 0.3);
            border-radius: 10px;
            color: var(--neon-cyan);
            font-size: 0.9rem;
            font-weight: 600;
            font-family: inherit;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            position: relative;
            overflow: hidden;
        }

        .submit-btn::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, var(--neon-cyan) 0%, var(--neon-purple) 100%);
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .submit-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(0, 245, 255, 0.2);
            border-color: var(--neon-cyan);
            color: #fff;
        }

        .submit-btn:hover::before {
            opacity: 0.15;
        }

        .submit-btn:disabled {
            opacity: 0.6;
            cursor: not-allowed;
            transform: none;
        }

        .submit-btn svg {
            width: 18px;
            height: 18px;
            transition: transform 0.3s ease;
        }

        .submit-btn:hover svg {
            transform: translateX(3px);
        }

        /* Spinner */
        .spinner {
            width: 18px;
            height: 18px;
            border: 2px solid transparent;
            border-top-color: currentColor;
            border-radius: 50%;
            animation: spin 0.8s linear infinite;
        }

        @keyframes spin {
            to { transform: rotate(360deg); }
        }

        .hidden {
            display: none !important;
        }

        /* Footer */
        .login-footer {
            text-align: center;
            margin-top: 1.5rem;
            font-size: 0.75rem;
            color: var(--text-muted);
            font-family: 'JetBrains Mono', monospace;
        }

        .login-footer span {
            color: var(--neon-cyan);
        }

        /* Responsive */
        @media (max-width: 900px) {
            .login-wrapper {
                flex-direction: column;
                gap: 2rem;
            }

            .illustration-side {
                order: -1;
            }

            .iso-svg-login {
                width: 200px;
                height: 200px;
            }

            .illustration-text {
                display: none;
            }
        }

        @media (max-width: 480px) {
            .main-container {
                padding: 1rem;
            }

            .login-card {
                padding: 1.5rem;
            }

            .logo-container {
                width: 60px;
                height: 60px;
            }

            .logo-container img {
                width: 38px;
                height: 38px;
            }
        }