* { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            font-family: 'Poppins', sans-serif;
            background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
            min-height: 100vh;
            color: #fff;
            overflow-x: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        body::before {
            content: '';
            position: fixed;
            top: 0; left: 0; width: 100%; height: 100%;
            background: 
                radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255, 119, 48, 0.3) 0%, transparent 50%),
                radial-gradient(circle at 40% 40%, rgba(120, 119, 198, 0.2) 0%, transparent 50%);
            z-index: -1;
            animation: backgroundMove 20s ease-in-out infinite;
        }
        @keyframes backgroundMove {
            0%, 100% { transform: translateX(0) translateY(0); }
            25% { transform: translateX(-20px) translateY(-10px); }
            50% { transform: translateX(20px) translateY(10px); }
            75% { transform: translateX(-10px) translateY(20px); }
        }
        .login-container {
            max-width: 600px;
            width: 100%;
            padding: 20px;
            position: relative;
            z-index: 1;
        }
        .card {
            
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            padding: 40px 30px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
            transition: all 0.3s ease;
            text-align: center;
        }
        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
            border-color: rgba(255, 119, 48, 0.3);
        }
        .logo-barber {
            font-size: 4rem;
            color: #ff7730;
            margin-bottom: 20px;
            text-shadow: 0 4px 8px rgba(255, 119, 48, 0.3);
        }
        .card h1 {
            font-size: 2rem;
            font-weight: 700;
            background: linear-gradient(135deg, #ff7730, #ffa726);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 10px;
            text-shadow: 0 4px 8px rgba(255, 119, 48, 0.3);
        }
        .card h2 {
            font-size: 1rem;
            color: #b0b0b0;
            font-weight: 300;
            margin-bottom: 30px;
        }
        .form-group { margin-bottom: 20px; }
        .form-control, input {
            width: 100%;
            padding: 15px 20px;
            background: rgba(255, 255, 255, 0.08);
            border: 2px solid rgba(255, 255, 255, 0.1);
            border-radius: 12px;
            color: #fff;
            font-size: 1rem;
            transition: all 0.3s ease;
            backdrop-filter: blur(10px);
            margin-bottom: 15px;
        }
        .form-control:focus, input:focus {
            outline: none;
            border-color: #ff7730;
            box-shadow: 0 0 20px rgba(255, 119, 48, 0.3);
            background: rgba(255, 255, 255, 0.12);
        }
        .form-control::placeholder, input::placeholder { color: #888; }
        .btn, button {
            padding: 15px 25px;
            border: none;
            border-radius: 12px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-transform: uppercase;
            letter-spacing: 1px;
            position: relative;
            overflow: hidden;
            width: 100%;
            margin-top: 10px;
        }
        .btn::before, button::before {
            content: '';
            position: absolute;
            top: 0; left: -100%; width: 100%; height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: left 0.5s;
        }
        .btn:hover::before, button:hover::before { left: 100%; }
        .btn-primary, button {
            background: linear-gradient(135deg, #ff7730, #ffa726);
            color: white;
        }
        .btn-primary:hover, button:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(255, 119, 48, 0.4);
        }
        .error-msg {
            background: rgba(244, 67, 54, 0.2);
            border: 1px solid rgba(244, 67, 54, 0.3);
            border-radius: 12px;
            padding: 12px 15px;
            margin-bottom: 20px;
            color: #ef9a9a;
            font-size: 0.9rem;
            text-align: left;
        }
        .back-link {
            display: inline-block;
            margin-top: 20px;
            color: #b0b0b0;
            text-decoration: none;
            font-size: 0.9rem;
            transition: all 0.3s ease;
        }
        .back-link:hover {
            color: #ff7730;
            transform: translateX(-5px);
        }
        @media (max-width: 480px) {
            .login-container { padding: 15px; }
            .card { padding: 30px 20px; }
            .card h1 { font-size: 1.6rem; }
            .logo-barber { font-size: 3rem; }
        }