* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Open Sans', sans-serif;
        }

        body {
            background-color: #000000;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
        }

        .login-card {
            background-color: #121212;
            width: 390px;
            padding: 55px 45px 50px 45px;
            border-radius: 6px;
            text-align: center;
            border: 1px solid #1f1f1f;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8);
        }

        .logo {
            font-size: 21px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 12px;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .subtitle {
            font-size: 15px;
            font-weight: 400;
            color: #9e9e9e;
            margin-bottom: 24px;
        }

        .alert-error {
            background-color: rgba(239, 68, 68, 0.12);
            border: 1px solid rgba(239, 68, 68, 0.35);
            color: #ef4444;
            font-size: 12.5px;
            padding: 10px 14px;
            border-radius: 4px;
            margin-bottom: 18px;
            display: none;
            text-align: left;
            line-height: 1.4;
        }

        .input-group {
            margin-bottom: 18px;
        }

        .input-group input {
            width: 100%;
            padding: 14px 16px;
            background-color: #121212;
            border: 1px solid #242424;
            border-radius: 2px;
            font-size: 13px;
            color: #ffffff;
            outline: none;
            transition: border-color 0.2s;
        }

        .input-group input::placeholder {
            color: #555555;
        }

        .input-group input:focus {
            border-color: #444444;
        }

        .options-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 2px;
            margin-bottom: 24px;
            font-size: 11.5px;
            color: #9e9e9e;
        }

        .remember-me {
            display: flex;
            align-items: center;
            gap: 8px;
            cursor: pointer;
            user-select: none;
        }

        .remember-me input[type="checkbox"] {
            appearance: none;
            -webkit-appearance: none;
            width: 16px;
            height: 16px;
            border: 1px solid #242424;
            border-radius: 2px;
            outline: none;
            cursor: pointer;
            background-color: #121212;
            display: grid;
            place-content: center;
        }

        .remember-me input[type="checkbox"]:checked {
            background-color: #000000;
            border-color: #444444;
        }

        .remember-me input[type="checkbox"]:checked::before {
            content: "✓";
            color: #ffffff;
            font-size: 11px;
        }

        .forgot-link {
            color: #9e9e9e;
            text-decoration: none;
            transition: color 0.2s;
        }

        .forgot-link:hover {
            color: #ffffff;
            text-decoration: underline;
        }

        .login-btn {
            width: 100%;
            padding: 14px;
            background-color: #000000;
            color: #ffffff;
            border: 1px solid #242424;
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            margin-bottom: 10px;
            transition: background-color 0.2s, border-color 0.2s;
        }

        .login-btn:hover {
            background-color: #0a0a0a;
            border-color: #3a3a3a;
        }

        .login-btn:disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }