:root {
            --primary: #dc3545;
            --primary-dark: #c82333;
        }
        
        * { margin: 0; padding: 0; box-sizing: border-box; }
        
        body {
            background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
            font-family: 'Roboto Condensed', sans-serif;
            min-height: 100vh;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }
        
        .login-container {
            display: flex;
            width: 100%;
            max-width: 900px;
            background: rgba(20, 20, 20, 0.95);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: 16px;
            overflow: hidden;
        }
        
        .login-branding {
            flex: 1;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            padding: 60px 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
        }
        
        .login-branding img {
            width: 120px;
            height: 120px;
            margin-bottom: 30px;
        }
        
        .login-branding h1 {
            font-size: 2rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 3px;
            margin-bottom: 15px;
        }
        
        .login-branding p {
            opacity: 0.9;
            line-height: 1.6;
        }
        
        .login-form-section {
            flex: 1;
            padding: 60px 40px;
        }
        
        .login-form-section h2 {
            font-size: 1.8rem;
            margin-bottom: 10px;
        }
        
        .login-form-section .subtitle {
            color: rgba(255,255,255,0.6);
            margin-bottom: 30px;
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        .form-label {
            display: block;
            color: rgba(255,255,255,0.8);
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 8px;
        }
        
        .form-control {
            width: 100%;
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: 8px;
            color: #fff;
            padding: 14px 16px;
            font-size: 1rem;
            transition: all 0.3s;
        }
        
        .form-control:focus {
            background: rgba(255,255,255,0.08);
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
        }
        
        .form-control::placeholder { color: rgba(255,255,255,0.3); }
        
        .btn {
            display: block;
            width: 100%;
            padding: 14px;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2px;
            cursor: pointer;
            transition: all 0.3s;
            margin-top: 10px;
        }
        
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
        }
        
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(220, 53, 69, 0.3);
        }
        
        .btn-primary:disabled {
            opacity: 0.6;
            cursor: not-allowed;
            transform: none;
        }
        
        .alert {
            padding: 12px 15px;
            border-radius: 8px;
            margin-bottom: 20px;
            display: flex;
            align-items: flex-start;
            font-size: 0.9rem;
        }
        
        .alert i { margin-right: 10px; margin-top: 2px; }
        
        .alert-danger {
            background: rgba(220, 53, 69, 0.1);
            border: 1px solid rgba(220, 53, 69, 0.3);
            color: #ff6b7a;
        }
        
        .alert-success {
            background: rgba(40, 167, 69, 0.1);
            border: 1px solid rgba(40, 167, 69, 0.3);
            color: #5dd879;
        }
        
        .alert-warning {
            background: rgba(255, 193, 7, 0.1);
            border: 1px solid rgba(255, 193, 7, 0.3);
            color: #ffda6a;
        }
        
        .signup-link {
            text-align: center;
            margin-top: 30px;
            padding-top: 25px;
            border-top: 1px solid rgba(255,255,255,0.1);
        }
        
        .signup-link a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 700;
        }
        
        .back-link {
            display: inline-block;
            color: rgba(255,255,255,0.6);
            text-decoration: none;
            font-size: 0.9rem;
            margin-bottom: 30px;
            transition: color 0.3s;
        }
        
        .back-link:hover { color: var(--primary); }
        
        .spinner-border {
            display: inline-block;
            width: 1rem;
            height: 1rem;
            border: 2px solid currentColor;
            border-right-color: transparent;
            border-radius: 50%;
            animation: spinner 0.75s linear infinite;
        }
        
        @keyframes spinner {
            to { transform: rotate(360deg); }
        }
        
        @media (max-width: 768px) {
            .login-container { flex-direction: column; }
            .login-branding { padding: 40px 30px; }
            .login-form-section { padding: 40px 30px; }
        }