body {
            margin: 0;
            min-height: 100vh;
            font-family: Arial, sans-serif;
            background: #0f172a;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .login-box {
            width: 100%;
            max-width: 380px;
            background: white;
            border-radius: 18px;
            padding: 32px;
            box-shadow: 0 20px 60px rgba(0,0,0,.35);
            text-align: center;
        }

        .logo {
            width: 110px;
            height: auto;
            margin-bottom: 10px;
        }

        h1 {
            margin: 10px 0 5px;
            color: #991b1b;
            font-size: 26px;
        }

        p {
            color: #6b7280;
            margin-bottom: 20px;
        }

        input {
            width: 100%;
            box-sizing: border-box;
            padding: 13px;
            margin-bottom: 14px;
            border-radius: 10px;
            border: 1px solid #d1d5db;
            font-size: 15px;
        }

        button {
            width: 100%;
            padding: 13px;
            border: 0;
            border-radius: 10px;
            background: #991b1b;
            color: white;
            font-size: 16px;
            font-weight: bold;
            cursor: pointer;
        }

        .error {
            background: #fee2e2;
            color: #991b1b;
            padding: 12px;
            border-radius: 10px;
            margin-bottom: 14px;
        }